Key points and points for attention in the management of strawberry planting in the middle and later stage

After the Spring Festival, the first stubble of strawberries in the greenhouse has been harvested, and strawberry production has entered the middle and later stage. In the management, in addition to strengthening the prevention and control of diseases and insect pests and controlling the temperature and humidity, the most important thing is to do a good job of fertilization and watering in the later stage. The following are the problems and suggestions that are easy to occur in production.

Uneven irrigation

The reason is that in order to save water and reduce the humidity of the greenhouse, some farmers use drip irrigation. When irrigating, this method will not make the greenhouse temperature drop too fast, reduce the occurrence of strawberry diseases, and thus increase the yield of strawberries. However, due to the reason of water quality, some drip ports are often blocked in the later stage, resulting in uneven irrigation and affecting the flowering and fruiting expansion of strawberries.

Management measures according to the practical experience in recent years, it is a more reasonable method to change drip irrigation to flood irrigation under plastic film in the later stage of irrigation. The specific operation method of under-film irrigation is to uncover the film between the two beds, put the sprinkler directly into the furrow under the film, and pour the water thoroughly. This method of irrigation allows water to be directed upward from the root of strawberries, reducing soil consolidation caused by irrigation, and irrigation under plastic film can also relatively reduce the number of irrigation, saving both labor and effort. Generally, clayey soil can be watered and fertilized once every 15-20 days, and sandy soil once every 10-15 days.

Strawberry fattening

After entering the second fruit, some strawberries are de-fertilized. If the nutrient supply is not strengthened, it is easy to affect the yield and quality of the second stubble fruit. Moreover, the flowering stage is not suitable for foliar fertilization, which increases the difficulty of fertilization.

Management measures with irrigation increased application of strawberry pioneer, spray Shibao, potassium dihydrogen phosphate and other high-efficiency strawberry special trace element fertilizer, increase the content of soil organic matter, supplement the missing manganese, molybdenum, zinc, calcium and other trace elements, increase the supplement of efficient phosphorus and potassium fertilizer. The application method is to apply the diluted efficient fertilizer evenly with the water during irrigation, generally applying 25 kg of special fertilizer per mu of land.

Serious insect pests

With the increase of temperature, aphids and other pests increased relatively, which seriously affected the quality of strawberries.

Management measures should be taken to prevent in advance. Hanging an armyworm board every 2 meters in the shed can reduce the occurrence of aphids. Plots that have been damaged can be fumigated with aerosol after picking strawberries to kill pests. During the specific operation, we should pay attention to move the pollination bees outside the shed first, so as not to hurt the bees. It is necessary to seal all the ventilated places, order the gas fog fumigant in the evening, and ventilate in the morning the next day.

Planting techniques and key points of cultivation and Management of Strawberry

Strawberry, also known as raspberry, raspberry, raspberry and so on, is a kind of red flower and fruit. Strawberry is a general name for strawberry plants of Rosaceae, which belongs to perennial herbs. Strawberries have a heart-shaped appearance, delicious red and tender, succulent flesh and a special rich fruit aroma. Strawberries have high nutritional value and are rich in vitamin C, which can help digestion. At the same time, strawberries can also strengthen gums, refresh breath and moisturize throat. People's anger tends to be exuberant in spring, and eating some strawberries can inhibit it.

In addition, strawberries had better be eaten after meals, because they contain a lot of pectin and cellulose, which can promote gastrointestinal peristalsis, help digestion, improve constipation, and prevent hemorrhoids and bowel cancer. The nutritional ratio of strawberries is very reasonable, in which the content of vitamin C is about 10 times that of the same amount of watermelons, grapes or apples. In addition, strawberries are rich in iron, fructose, glucose, citric acid, malic acid and so on. For lung heat cough, sore throat and long fire boils that are easy to appear in spring, the nutrient elements contained in strawberries can play an auxiliary role. At the same time, because of iron, anemic friends can also eat often. But doctors also suggest that although strawberries are good appetizers, they are cold, so don't eat too much at one time in early spring, especially for people with spleen and stomach deficiency and cold, diarrhea and excessive stomach acid.

General situation of production and cultivation

Strawberries are cultivated in most countries in the world at present. Strawberry cultivation in the United States covers an area of 23000 hectares, with a yield of 567000 tons, accounting for about 28 percent of the world's total output, with an average yield of 24.6 tons per hectare. Japan has a cultivated area of 11000 hm2, with a yield of 218000 tons, accounting for 11% of the world's total output, with an average yield of 19.3 tons per hectare. Europe is the main producer of strawberries, accounting for about 50% of the world's production. Poland, Italy, Spain, the Netherlands, Belgium, Russia, Romania and the United Kingdom have a large cultivated area, with a yield of 9.5-18.3 tons per hectare. China is the country with the most abundant wild strawberry resources in the world. It began to use wild strawberries a long time ago and has been following it until now. The cultivation of large fruit strawberry in China began in 1915, but it was neglected and developed slowly in the past. Strawberry production has developed rapidly since the 1980s. At present, the area of strawberry production in China is about 70, 000 hm2, ranking first in the world. The main producing areas are located in the eastern coastal areas such as Anhui, Liaoning, Hebei, Shandong, Jiangsu, Shanghai and Zhejiang. In recent years, Sichuan, Anhui, * *, Beijing and other regions have also developed rapidly. Key strawberry producing areas are Jiangsu Sihong, Anhui Hefei, Liaoning Dandong, Hebei Baoding, Shandong Yantai, Shanghai suburbs, Sichuan Shuangliu, Jiangsu Lianyungang and so on. Changfeng County, Hefei currently has 145000 mu of strawberry planting area, with an annual output of more than 200000 tons of strawberries, with a total output value of more than 1 billion yuan, expanding to more than 200000 mu by 2012, and building the only national virus-free strawberry science and technology park in the country. Every year, promotion meetings are held in the Great Hall of the people in Beijing and the Diaoyutai State Guesthouse in Beijing, and dealers and strawberry households are held in Beijing Xinfadi Market, Tianjin Red Flag Market and Shenyang Fruit Wholesale Market. Its production scale has jumped from the top of Anhui Province to the largest county of strawberries in the country, and Changfeng Strawberry has become a well-known trademark in China.

Growth condition

Strawberries are suitable for growing in sunny, hydrophobic soil. The depth of the soil is about 8 mi 10 inches. For large strawberries, the row spacing should be 12 inches and the plant spacing should be about 18 inches. The vines of the plant should be removed in time to facilitate the fruit of strawberries. The yield of strawberries is periodic, so it is best to cultivate some new plants in the first few years of planting. If you don't like managing strawberries, you can plant strawberries every 18mur24 inches so that strawberries can grow everywhere. Of course, it will look a little messy, and the strawberries are not big. If you want to avoid this situation, you can remove some vines properly. In autumn, cover the plant with a layer of soil to prevent frost. After the soil is frozen, the plant can be covered with hay 4 inches thick. In the spring of the following year, when new leaves grow, the hay is removed. After the weather becomes warm and stable, the covered soil on the surface of the plant is removed. But leave some hay between the rows to prevent the growth of weeds and retain moisture in the soil.

Planting technology

Strawberry ranks first in the production of small berries in the world. Strawberry is an economic crop with quick fruit, early maturity, easy reproduction, short cycle and high benefit.

1. Preparation of breeding grounds

1) choose paddy fields with convenient drainage and irrigation, which are not easy to accumulate water and have high fertility, or vegetable garden soil (former crops and soil blocks that have used Lvhuanglong herbicide). Apply sufficient basic fertilizer (cake fertilizer, household fertilizer, human feces and urine, phosphate fertilizer) after ripening, at the same time, use 50% phoxim or 3% furan per mu, mix 25 jin of fine soil, and turn the soil to make a bed. The bed is 1.5 mi 1.8 meters wide and the turtle's back is shaped to prevent stagnant water and the soil should be broken.

2) selection and colonization of each plant. Select the new leaves to develop normally, the leaflets are symmetrical, the leaf color is dark green, the petiole is thick, the leaves are large, the growth is strong, the yield is good, and the diseased leaves and old leaves are removed. Our city is generally planted in the breeding ground in April of the Gregorian calendar (the daily average temperature is above 12 ℃). Two rows were planted in each border, 30 cm away from the edge of the border, and the distance between plants was 60 mi 80 cm. Immediately after planting, water the plant and fix it.

3) Fertilizer and water management, the principles of fertilization in seedling land are as follows: suitable nitrogen, heavy phosphorus and potassium, 200 jin of rotten vegetable cake plus 8 jin of urea per mu, 50 jin of phosphate fertilizer and 10 jin of potash fertilizer, and watering every 20 days after the water is dissolved. Human feces and urine can also be replaced.

4) after each plant survived (a week later), gibberellin (920) was sprayed, that is, each gram of "920" was mixed with water of 40 kilos and 50 jin, (920 was first dissolved in a clean bowl with high concentration of liquor). Spray twice at intervals of one week to 10 days. The application of nitrogen fertilizer should be strictly controlled in August to make it drought properly, but not too much.

2. Preparation and specification of timely transplanting and transplanting land.

1) Field preparation: choose fertile fields or soil with convenient drainage and irrigation as field land. Strawberries need a large amount of fertilizer, and there is generally less fertilizer in the later stage (harvest period), so the base fertilizer should be sufficient, and it should be dominated by organic fertilizer, generally 1500 tons per mu of organic fertilizer, 50 tons of cake fertilizer, 25-30 tons of compound fertilizer, 7.5 grams of urea, 40 grams of excess calcium and 10 grams of potash fertilizer. in addition to urea and compound fertilizer, other fertilizers, except urea and compound fertilizer, mix well with urea and compound fertilizer to spread the soil surface, and then turn the soil to make ridges. Generally, the height of the ridge is 25 tons, the width of the bottom of the ridge is 90 tons, and the surface of the ridge is 60 inches. The width of the ridge and trench is 30 cm, and the width of the furrow at the bottom of the ridge is about 100m / w. There is a certain inclination from the surface of the ridge to the bottom of the ditch.

2) planting period and mode: the protected cultivation in our city is generally transplanted from the end of September to the beginning of October. The planting density and seedling condition, soil fertilizer and thinness were treated separately, and strong seedlings, dry seedlings and soil fertilizer should be sparsely planted. On the contrary, it should be closely planted. Generally, 9,000 plants are planted in 7 mu. After the ridge is planted, it will be planted 5 cm from the edge of the ridge, with a distance of 12 cm to 15 cm. The length of the ridge generally does not exceed 30 meters.

Attention should be paid when transplanting: first, directional transplanting: both bow back outward, which is beneficial to the extraction of inflorescences later. Second, double-row triangular (zigzag) planting, which is conducive to ventilation and light to take root. The third is to grasp the depth so that the roots are not exposed and the seedlings are not buried at the top, which is beneficial to tillering. Fourth, transplanting with soil is beneficial to survival. Fifth, it will be planted in the afternoon on sunny days and all day on cloudy days. Sixth, strengthen the management of water and fertilizer, immediately pour through the fixed root water after planting, and add methyl topiramate according to 800 times liquid when watering. Seventh, check and replenish seedlings in time.

3. Field management

1) pre-winter management, after planting survived to mid-late November, we should pay attention to three points: first, frequent application of thin fertilizer, mainly nitrogen fertilizer, preferably dilute manure water; second, keeping moist; third, weeding and loosening soil to pick old leaves and diseased leaves.

2) pre-and post-flowering management: before flowering, young fruit stage and fruit expansion period, vegetable fruit Zhuangtieling was sprayed in time to improve the cyclic fruit setting rate of strawberry, promote fruit development, and control diseases and insect pests with topzine, Sukeling and dimethoate at the same time.

3) overwintering management: before the cold winter comes, it is necessary to pour water thoroughly to prevent the cold.

4. cover the film at the right time

Plastic film mulching can double the yield, reduce fruit loss and prevent pollution. The film is divided into greenhouse cover film and mulch film. The time of covering the film should be controlled when the daily average temperature drops to about 8 ℃. First cover the greenhouse film, then cover the plastic film. Weeding, ploughing and fertilization should be done before mulching to control diseases and insect pests. (greenhouse production and film purchase model) due to limited space will not be introduced, interested parties please contact the Agricultural Science Institute. After covering the film, the temperature in the shed should be kept at 8 ℃ at night and about 20 ℃ during the day. The film should be lifted at noon on a sunny day and covered at 3 p.m. If the temperature is too high, the pollen dies, and the activity of the pollen is not enough to pollinate.

5. Planting in greenhouse

Strawberries planted in greenhouse in early spring can blossom and bear fruit.

6. Open-field cultivation techniques

Strawberry can be cultivated in open field in two ways: one plant a year or one plant for many years. The former can be rotated with other crops after harvest every year. Under this system, strawberry has strong vitality, good fruit quality, early ripening and less diseases and insect pests. However, the key technology is to cultivate strong seedlings with more than 3 leaves and well-developed roots, which can be planted closely. Once planted, harvested for many years, transplanted in autumn, and harvested in May of the following year. After 3 years, it was renewed once with stolon seedlings.

1) applying basic fertilizer for land preparation

Strawberry has shallow roots and is suitable for growing in loam or sandy loam with good permeability and rich in organic matter. Wheat, legumes, melons and vegetables are suitable for the previous crops. It can also be intercropped with high-stem crops. Plough the land deeply early, apply manure and base manure with full rot heat of 3000kg per mu, and burn in the sun. Diammonium phosphate 25kg was applied during soil preparation. Potassium chloride 10kg. Irrigate a small amount of water before planting.

2) colonization

Seedlings with 5-6 compound leaves, strong plants and complete roots were selected before transplanting and planted in the field in cloudy days or in the evening. The planting density is (20-25) cm × (25-30) cm. The degree of planting seedlings is that the roots are not exposed and the seedlings are not buried. After planting, the seedlings are irrigated once. After the water is dry, the condition of the seedlings is checked in time to loosen the soil, cultivate the soil or replenish the seedlings. When planting, the seedlings grow with the bow back to the flat border, which is easy to manage and harvest fruit.

3) Field management

After strawberry planting, watering the root water, keeping the field moist, lowering the ground temperature, and irrigating according to the humidity in the field. When overwintering water was irrigated, 15-20kg/ mu compound fertilizer was applied to improve the overwintering ability. The flowering and fruiting period in spring is a water sensitive period, so the soil should be kept moist. When applying nitrogen and phosphorus compound fertilizer or foliar spraying fertilizer during irrigation, the water should not be too much, and the stagnant water should be discharged in time. At the same time, vegetable and fruit Zhuangtieling should be sprayed before flowering, young fruit stage and fruit expansion period, so as to improve the fruit setting rate of strawberry cycle and promote fruit development. Strawberries should be ploughed and weeded frequently after transplanting. Cultivate the soil at the right time after fruit harvest. Appropriate ground cover should be taken when overwintering, so as to prevent cold and heat preservation, and keep strawberries survive the winter smoothly. Now, more than plastic film mulching from the end of January to early February can promote the early ripening of strawberries and prolong the harvest time.

Nursing care of strawberries

Once the strawberries begin to bear fruit and turn red, be careful not to let the birds peck at them, because birds are easy to find red things. Connect a net to the strawberries or cover the strawberries with a wooden basket. But if you have a greenhouse at home, you can move the strawberries to the greenhouse, which will be better. Strawberries are also easier to bear fruit. When the fruiting period of strawberries is over, you can move them out of the greenhouse and leave them outside for the winter.

In a way, if strawberry plants are subjected to some frost, it will be more beneficial to increase yield in the coming year. Strawberries are easy to grow and can be transplanted. Sometimes you may find that the plant has yellow leaves, but don't worry, just remove it. In winter, you can keep the yellow leaves until new leaves grow in the following spring, then remove the dead yellow leaves, and pay attention to watering, weeding, and killing insects. Strawberries can also be planted in plant bags, but they must be watered evenly to prevent birds from pecking at strawberries and insect pests. The soil in the plant bag dries easily and needs to be checked frequently to make sure the soil is moist. If it is a small amount of planting, try not to use pesticides, you can use a large amount of dishwashing detergent mixed with water to spray; you can also put some melon peel, beer and so on nearby to ward off mollusk pests such as snails.

Prevention and control of diseases

Plant strawberries, change or control the environmental conditions for their growth and development, overcome unfavorable factors, make them blossom and bear fruit normally, harvest ahead of time, and supply the market out of season. Greenhouse cultivation has the characteristics of low investment, quick effect, high yield and good benefit. The yield per mu is 1500 kg, which is more than twice that of the open field, and the output value is more than 10 times higher than that of the open field. In order to prolong the supply period of strawberries and meet the demand of annual supply, four cultivation forms are commonly used at present:

(1) promoting cultivation (maturing in late autumn and early winter from November to December).

(2) semi-facilitative cultivation (matured and listed from February to March).

(3) Super-facilitative cultivation.

(4) restraining cultivation.

Although the use of greenhouse production has many advantages, but also has shortcomings, because of the high temperature and humidity in the greenhouse. It is easy to create favorable environmental conditions for the occurrence of diseases and insect pests. It is particularly important to strengthen the comprehensive prevention and control of diseases and insect pests, and it has become the key link to realize the high and stable yield of strawberries in greenhouse.

1. Leaf spot

Also known as snake eye disease, mainly damage leaves, petioles, fruit stalks, tender stems and seeds. Small dark purple spots are formed on the leaves, which are enlarged to form near-round or oval disease spots, with purple-red-brown edges, gray-white center and slightly fine wheels, so that the whole disease spot is snake-eye-like, and small black grains are not formed on the disease spot.

Prevention and control measures: timely removal of diseased leaves, old leaves. The initial stage of the disease with 70% chlorothalonil wettable powder 500 ~ 700 times liquid, ten days later spray again. Or spray 75 kg of water with 70% mancozeb wettable powder, 200 grams per mu.

2. Powdery mildew

It is mainly harmful to leaves, but also to flowers, fruits, pedicels and petioles. The leaves are rolled up in the shape of a spoon. The flower buds and petals are purplish red, can not bloom or bloom completely, the fruit is not inflated, is slender, and the young fruit loses luster and hardens. Near-ripening strawberries will lose their commercial value when they are damaged.

Control measures: focus on spraying Baume 0.3 degree stone sulfur mixture in and around the disease center strain. After harvest, the leaves of the whole garden were cut and sprayed with 1000 times of thiophanate methyl or 5000 times of methamphetamine and 5000 times of Teflin.

3. Grey mold

It is the main disease after flowering, which can occur on flowers, petals, fruits and leaves. Brown spots were formed on the fruit during the expansion period, and gradually enlarged. Botrytis cinerea caused the fruit to soften and rot, which seriously affected the yield.

Control measures: spray with 25% carbendazim wettable powder 300 times solution, 50% carbendazim wettable powder 800 times solution, 50% prohydantoin 500 times ~ 700 times liquid and so on.

4. Root rot

Starting from the lower leaf, the leaf margin becomes reddish brown, gradually withered upward, and even withered to death. The pillar begins to turn dark brown and rotten in the middle, and the central column of the root is red.

Control countermeasures: before transplanting strawberries, use 40% asparagus green powder 600 times liquid, pour on the border, and then cover the soil, flatten and transplant, in order to effectively kill the bacteria in the soil, reduce the number of bacteria in the field, and reduce the chance of infection.

5. Verticillium wilt

The disease is a soil disease, and the main symptoms are deformities of young leaves, yellowing leaves and rough leaf surfaces. Then the leaf margin browned and withered inward until it died.

Control measures: strictly introduce the planting of disease-free plants, shorten the renewal life, disinfect the soil with 13.5 ~ 20 liters of chloropicrin or solar film irrigation, and remove those who have been burned.

How to grow strawberries in greenhouse? Key points of planting techniques of Strawberry in greenhouse

In recent years, with the development of facility agriculture, the planting area of strawberries in greenhouse is also expanding. In the process of strawberry planting in greenhouse, in order to increase the yield and quality of strawberry and improve economic benefits, it is very important to do a good job of fertilizer and water management, prevention of deformed fruit, prevention of early bud and early flower and so on. So, how to grow strawberries in greenhouse? The following is to introduce the key points of strawberry planting techniques in the greenhouse, let's take a look.

Picture: strawberry planting in greenhouse

First, timely buckle the shed for heat preservation

In general, when the temperature drops below 5 ℃, the strawberry cultivation bed should be covered with a small semicircular arch shed and covered with colorless plastic film. Pay attention to ventilation in the initial stage of buckling shed to prevent more than 30 ℃ in the shed, especially around noon when there are no clouds and strong sunlight in sunny days, and high temperature burning seedlings should be prevented. In addition, when the lowest temperature in the greenhouse is about 5 ℃, cover the greenhouse film with paper quilt or grass to keep warm at night, and remove it in time after sunrise during the day, so as to increase daylight exposure, increase the temperature in the greenhouse, and beware of freezing injury or retting roots. Enter a few cold days, if the highest temperature in the shed is below 10 ℃, do not take off the covered thermal insulation material during the day to facilitate strawberries to survive the winter safely. After the "May 9" and "69" days, when the external temperature is stable above 0 ℃, the paper quilt or grass quilt can be removed after sunrise during the day, but it should be covered in time before sunset in the evening to maintain a higher temperature in the arch shed. When the temperature in the small arch shed is stable above 5 ℃ at night, the cover can be removed, weather changes can be paid attention to at any time, and timely ventilation can prevent the harm of high temperature.

Second, prevent early buds and early flowers

In the process of strawberry production in greenhouse, early budding and early flowering are easy to occur. This phenomenon occurs too often, which will seriously affect the yield and quality of strawberries. The phenomenon of early bud and early flowering of strawberries in greenhouse is related to the following factors. First, it is related to the characteristics of the variety. The varieties with easy differentiation of flower buds and shallow dormancy, such as Lihong and Qiuxiang, etc., need only about 50 hours of dormancy, need less low temperature during the dormancy period, and are prone to early buds. Second, it is related to the premature differentiation of flower buds caused by fertilizer and pseudo-planting. On the one hand, before seedling raising to flower bud differentiation, if there is less nitrogen absorption, strawberry flower bud differentiation often occurs earlier; on the other hand, if the pseudo-planting time is too late, the pseudo-planting seedlings are too small, or the soil on the pseudo-planting bed is too dry or too wet, and insufficient fertilizer can make strawberry flower buds differentiate prematurely. All these will cause early budding and early flowering of strawberries after planting. In order to prevent early budding and early flowering of strawberries, the following points should be done in production: first, select suitable varieties. The varieties with shallow dormancy should be selected for cultivation in greenhouse. If you choose a variety with strong dormancy, thermal insulation should not be covered too early. The second is to fertilize reasonably, strengthen management and cultivate strong seedlings in the process of raising seedlings. By removing old leaves, removing inflorescences, straightening out stolons and spraying gibberellin, we can strengthen the management of mother plants and produce high-quality strong seedlings. Third, pay attention to control the temperature after withholding the shed. The temperature in the greenhouse is controlled below 25 ℃ during the day and above 0 ℃ at night. In the severe winter, through the small shed in the greenhouse, thickening cover, erecting wind barriers and other heat preservation measures to ensure the normal development of strawberries. For the plants that have already produced early buds and early flowers, we should remove the buds in time, strengthen the management of fertilizer and water, promote the flowering and fruiting of axillary buds and reduce the loss.

Picture: strawberry planting in greenhouse

Third, strengthen the management of fertilizer and water

The fruiting period of strawberry in greenhouse is long, so it is necessary to apply reasonable topdressing on the basis of re-application of base fertilizer in order to meet its nutritional requirements. Topdressing takes the principle of "a small amount and many times". From buckling shed to budding, shallow water can be applied once in about 10 days, 10 kg of urea per mu, 5-8 kg of calcium superphosphate and potassium chloride each. In addition, in the middle and later stage, it can be combined with spraying, foliar spraying multi-element micro-fertilizer or phytin and other organic nutrient solution to improve the fruit weight and sugar content of strawberry. The temperature in the greenhouse is too high and the soil water evaporation is large, so it should be irrigated in time. In the early stage, the external temperature was high, and irrigation was carried out in the evening; in the later stage, the temperature inside and outside the greenhouse was lower, and irrigation was carried out in the morning. After irrigation, first increase the temperature of the shed, and then increase the air volume and reduce the humidity. Don't water too often and water thoroughly every time. Stop watering one week before flowering, and water once 15 days after flowering combined with fertilization.

IV. Prevention of malformed fruit

Mixed planting of some main varieties with a large amount of pollen is an effective measure to prevent abnormal fruit of strawberry in greenhouse. The varieties planted by the landlords are Baojiao Zaosheng, and the pollinated varieties are Chunxiang, Fengxiang, etc., which are generally planted at 5% and 10%. Strawberry can not be sprayed with pesticides during flowering to prevent the decrease of pollen germination rate, affect fertilization and produce deformed fruit. Strawberry can be used to control the disease before flowering, pull out the diseased plant in time after flowering, remove the diseased leaves and inflorescences, and control the spread of the disease. When the soil moisture is insufficient, the dark irrigation of plastic film between ridges should be carried out in time. When lack of fertilizer, combined with watering, apply 45% ternary compound fertilizer 15 kg per mu, do not apply ammonium bicarbonate. After the fertilizer is diluted with water, the effect of drilling and topdressing is better, which can promote fertilizer with water and meet the needs of normal flowering and fruiting of strawberries. When each batch of flower buds of strawberries in the greenhouse is formed, bees are placed in the greenhouse, and 5000 of them are kept in each standard shed, so that the pollination rate can reach 100%. The release time is 8-9 am and 3-4 pm.

Picture: strawberry planting in greenhouse

V. Prevention and control of diseases and insect pests

Strawberry cultivated in a small arch shed is prone to diseases such as powdery mildew and gray mold and underground pests harm strawberry plants because of high temperature and humidity in the greenhouse. For pests, 25% phoxim can be sprinkled in the soil or mixed with fine soil before planting, or trichlorfon powder can be used to control the soil. For diseases, 40% methyl topiramate 300-400 times or 240 times Bordeaux solution should be sprayed in time after film mulching.

[conclusion] in order to obtain greater economic benefits and achieve high quality and high yield, it is important to do a good job of management in the process of planting strawberries in greenhouse. Above for you to introduce the greenhouse strawberry planting techniques, I hope to be able to help you!