How to deal with red spider thistle whitefly? what kind of medicine should be used?

Raise flowers, this is not so easy to raise, plants will also get sick, red spider thrips whitefly how to deal with? Red spider, thrips, whitefly, whitefly:

Red spider

Treatment: (1) if only a few leaves have red spiders, the leaves can be removed.

(2) if there are more, use drugs, such as propargite, dicofol, dimethoate, dimethoate, etc.

Thrips

Treatment: (1) rinse with water every few days, do not hurt the rhizome.

(2) when the number of nymphs is large, the nymphs should be controlled once every 7 to 10 days, and continuously for 3 to 5 times.

Such as: chlorpyrifos EC, cyhalothrin EC, deltamethrin EC, fenvalerate EC and other spray.

Bemisia Tabaci

Treatment: (1) isolate other plants that do not have insects; pinch off a few with your hands, or cut off leaves with leaves.

(2) serious spraying control, such as thistle lice, acetamiprid, chlorpromazine, acetamiprid, chrysanthemum EC, zinc cyanide EC, methotrexate, permethrin or Uranus, etc.

In the process of flower cultivation, the treatment of red spider thrips whitefly is introduced here, or to buy the right medicine.

What kind of medicine does rose red spider use?

The rose is a famous medicine jar, and the red spider is the most common pest. Many flower friends want to know what medicine the rose red spider uses. This paper introduces a variety of agents, because the medicine needs to be used in turn, each medicine can only be used once in three months, otherwise it will affect the effect, so try to prepare more than one medicine.

Drug prevention and treatment, we should first consider the toxicity of drugs to the human body and the impact on the environment, it is recommended to use drugs with low toxicity and high efficiency as far as possible. High efficiency has two meanings: one is that the killing effect is good, and the other is that the lasting effect is longer. I generally choose varieties with a duration of more than 40 days. Low toxic and efficient drugs are indeed more expensive in terms of unit price, but I think it is acceptable to analyze them:

1. These drugs are generally diluted more than 5000 times, while other drugs, such as the most commonly used avermectin, are diluted 1000 times.

two。 The efficacy of avermectin and other general drugs is 45 days or more, and the efficacy of avermectin and other general drugs is 7 days.

Spray effectively to the back of the leaves, because red spiders are mainly stationed on the back of the leaves, buy rose and other plants that are prone to red spiders, especially seedlings, it is best to prepare medicine in advance.

1) mite danger

This is the first low-toxic and high-efficiency drug I used, with a minimum dose of 100 milliliters. At that time, the price seemed to be more than 60, but now it is only over 40. Now I have used the third bottle, every time it has expired, but I think it is very cost-effective for me, please compare the following drugs.

German Bayer crop Science Co., Ltd., the actual ingredient is spiroparate, bottled 100ml suspension. Control object: all kinds of mites, including common red and white spiders. Mainly through contact and stomach toxicity to control eggs, nymph mites, and female adult mites (not good for male adult mites) egg killing effect is outstanding. Diluted 4000 times the amount of oil used.

Product characteristics:

1. Broad-spectrum acaricides.

two。 It lasts for a long time, up to 35-45 days. I usually take another drug for another 40 days to continue the next stage of prevention and treatment.

3. The acaricidal mechanism is to inhibit the fat synthesis of harmful mites and destroy the energy metabolism of harmful mites, thus killing harmful mites, which is different from the acaricidal mechanism of commonly used neural acaricides, so it has no risk of cross-resistance to existing acaricides.

4. It is safe for crops and is very safe under different temperature conditions.

5. Strong lipophilicity, resistant to Rain Water scour, generally spray 3 hours after the rain does not affect the normal play of the efficacy.

6. It has low toxicity and is safe for human and natural environment.

2) Aika mite

My experience is that the efficacy is similar to that of mites, and it is a first-class low-toxic acaricide. The ingredient is 43% biphenylhydrazine ester suspension, which is currently sold in bags of 5 milliliters, with a use multiple of 3000-5000 times, produced by Kojua Company of the United States.

Aika mite is effective for all stages of life of mites and can kill eggs and adults, which has the most advantage compared with other low-toxic and high-efficiency acaricides. The duration is long, about 14 days at 25 degrees, and more than 40 days at temperatures above 25 degrees. Because red spiders mainly occur above 25 degrees, it is effective for me to use it within 40 days.

3) Lefu ethacazole

The active ingredient is 11% ethacazole and the dosage form is suspending agent. At present, there are two kinds of packaging: bagged 10ml and bottled 100ml, the prices are about 7 yuan and more than 50 yuan respectively.

The manufacturer of ethacazole is Sumitomo Chemical column Society of Japan. The main performance of this drug is that it has a good effect of killing various forms of juvenile nymph mites, resistant to Rain Water erosion, and lasts for 50 days, but I usually re-spray it around the 40th day. When used normally, it has little effect on beneficial organisms and is safe to crops. Diluted 5000-7500 times, so the performance-to-price ratio is super high.

Like the danger of mites, drugs are used in the early peak period of young nymph mites of red spiders. If red spiders are serious, they should be used in conjunction with drugs that have the efficacy of killing adults.

4) avermectin

Avermectin will not post the picture, this has been made in China, there are a number of manufacturers, buy well-known manufacturers of products are very good.

This is a broad-spectrum insecticidal and acaricidal agent, although the taste is strong, but it is actually a low-toxic pesticide, the effect of killing red spiders and other pests is reliable, generally diluted 1000 times. Avermectin has stomach toxicity and contact killing effect on mites and insects, so it can not kill eggs.

I have been using avermectin, but the main purpose is not to kill red spiders, because compared with the above three, avermectin lasts only one week, my main control of red spiders is the above three. Avermectin is commonly used to kill aphids, thrips, Plutella xylostella, Pieris rapae, whitefly and so on. Avermectin can be called a magic medicine in terms of broad spectrum and low price.

When the red spider breaks out seriously, avermectin combined with one of the above three species has an excellent killing effect on the red spider. If the plant raised is not a red spider king such as rose, avermectin is a good choice. Red spiders usually spray twice to solve the problem.

5) Jinmanzhi

The active ingredient is 20% suspending agent buflurate, which is an acaricide developed by Otsuka Chemical Company of Japan. It is effective against the eggs, nymphs and adults of spider mites. It has no drug harm to all kinds of plants, and has low toxicity to mammals, aquatic organisms, beneficial organisms, natural enemies and other non-target organisms. Diluted 1500-2500 times, the effect lasted for more than 30 days. At present, there are two kinds of packaging: bagged 10ml and bottled 100ml, the prices are 5-6 yuan and more than 40 yuan respectively.

Because its dilution multiple is about 2000, and its duration is 15 days shorter than that of acaroid mite, acaroid mite and ethacarazole, I feel that the performance-to-price ratio is not as good as the first three. The most important thing is that it will increase the frequency of spraying. I don't like spraying, so I use it less.

According to reports, in addition to killing red spiders, Jinmanzhi also has a good control effect on Plutella xylostella, aphids, powdery mildew, downy mildew and so on.

6) the god of protecting flowers

I also started to use pesticides from the flower protection god, and there are still many flower friends in use, and this medicine is really effective for red spiders, so let's talk about flower protection.

The god of protecting flowers does not specify the active ingredient, judging from its strong taste, I think it should contain avermectin, which can also be used to kill pests that avermectin can kill, but it can also kill bacteria, so it should be a compound preparation.

From the point of view of the safety of medication, I have long abandoned the use of Huasheng, and drugs with unknown ingredients had better not be used. In addition, its dilution multiple is 200 times, from its price, the performance-to-price ratio is also relatively low, it is better to use avermectin. As for the duration, what I used to use in the past is about a week.

How to cultivate thin-leaf orchid? Industrial cultivation techniques of Cymbidium

Thin-leaf orchid is one of many orchids, which is characterized by larger flowers, longer flowering period and high ornamental value, so what should be paid attention to in the process of planting? Let's follow the editor to take a look at the factory cultivation skills of Cymbidium.

Cymbidium, also known as Cymbidium, is a perennial epiphytic orchid or terrestrial orchid of Orchidaceae, native to tropical Central America, with about 45 native species, 12 varieties and 6 natural hybrids. The evergreen varieties mainly grow in the cool and moist areas with breeze above 1500m above sea level, while the deciduous varieties mainly grow in the dry and wet middle altitude areas. Can survive frost at night. But usually the most suitable temperature is 18 ℃-21 ℃ in daytime and 10 ℃-15 ℃ at night. The daytime temperature in summer should not exceed 30 ℃ and should be shaded moderately. The cultivation materials are mainly slightly acidic mixed plants.

Breeding technology

The routine propagation of Cymbidium is mainly aseptic sowing propagation and tissue culture propagation. It is extremely difficult for Cymbidium to bear fruit naturally in greenhouse, so it must be pollinated artificially. The robust mother plant was selected for self-pollination and hybridization during flowering. It takes 10 ~ 12 months from pollination to ripening after pollination. When the seed is nearly half mature, the effect of aseptic sowing is the best. Meristematic tissue culture can select the meristem of new buds, flower buds or pseudophosphate stem growing points of the mother plant to sterilize and propagate the new plant.

Cultivation techniques

Cymbidium belongs to cool temperate zone, which is afraid of heat but not low temperature, so it is very strict to the growth environment. The suitable temperature range for growth is 20 ℃-27 ℃, the optimum growth temperature for flowering period is 10 ℃-13 ℃, the relative humidity is 80%, and the light 12000Ix-150001x: the planting greenhouse is required to be a modern greenhouse, and plastic greenhouses can also be used for large-scale production in the south.

The cultivation medium should be well drained and should be prepared with water moss, peat soil, rotten leaf soil, perlite, bark, pumice, coconut shell, fern root, serpentine shavings, charcoal, etc., with a pH value of 4 ~ 6. Epiphytic substrates can be cultivated with water moss, bark blocks or fern roots, while geophytic types can be cultivated with rotten leaf soil or mountain mud mixed with appropriate amount of river sand and perlite. But generally, it is better to use water moss or bark as cultivation substrate. When planting seedlings, the selection of finer bark is beneficial to the growth of the plant.

Generally speaking, deciduous varieties need thicker cultivation medium, and bark of 0. 7 cm ~ 1. 5 cm is more suitable. The evergreen varieties need to choose a finer cultivation medium, and the bark with a size less than 0. 5 cm will be more suitable for growth if a small amount of water moss is added Bottle seedlings are usually the best transplanting period from October to April of the following year. Before coming out of the bottle, it is necessary to domesticate in the cultivation site for one week (if some varieties are difficult to grow, they can be pulled to 14 or 30 days to see the condition). The bottle cap should not be opened in the domestication stage to avoid bacterial infection as far as possible. When coming out of the bottle, you should carefully remove it from the bottle and wash the culture medium from the root. Carefully separate the roots of the seedlings, use small media such as bark, bark must be sterilized, plant with 1.5-inch hole plate, be sure to press the medium. The depth of cultivation is that the root system is completely covered by the medium. The loading height of the medium should be 2 stroke 3. After planting, put the seedling tray neatly in the cultivation rack, do not water it when you just plant it, and water it again 3 days later, so as to avoid bacterial infection in the wound caused by moving the bottle.

The seedlings should be kept in a greenhouse with 80% shade, and the relative air humidity should be kept above 75%. The daytime temperature should be controlled between 22 ℃ and 25 ℃. The night temperature is 15 ℃-18 ℃. In the third day after planting, the leaves should be sprayed with clear water once or twice a day, twice or three times in the dry season, with slightly water bead-shaped sand on the leaf surface. With the continuous adaptation and growth of seedlings, the amount of light can be gradually increased. Within one month after planting, because the root system has not yet grown normally, do not rush to apply fertilizer, depending on the root growth condition, apply thin fertilizer every 7 ~ 10 days, mainly foliar leaching, and choose water-soluble root-promoting fertilizer, such as 9:4 5: 15 compound fertilizer. the concentration is 3000 ~ 5000 times. It can be applied again after 1 week, and then the 30:10:10 compound fertilizer can be used once a week.

The thin-leaf orchid needs to change the basin once a year, usually the medium is removed, the whole medium is replaced with a new medium, and the female large basin is replaced. The best time to change the basin should be S early spring solstice, be careful not to delay until the height of summer. When changing pots, the plants should be moved carefully to remove the old cultivation medium and necrotic roots. When filling the medium, the pseudocorm should be planted in the center of the new basin to make room for the development of new buds.

Planting management

The best planting period is from October to April of the following year, and the seedlings should be planted with strong seedlings with good growth potential, pseudocorm hypertrophy, no damage to leaves and no disease. Small seedlings should be planted in 1.5 inch pots, 2 inch ~ 2.5 inch pots should be used when changing pots in middle seedling stage, and 3 inch ~ 3.5 inch pots should be planted in big seedlings. At the same time, after planting, add a little fermented bark and activated carbon (fermented bark to increase the potassium needed for its initial growth: activated carbon to purify). After planting, it should be placed neatly on the seedling rack and do not need to be watered immediately. You should wait until the 3rd day before watering, because there may be wound infection during transplantation, if sterilized water or pure water can be used together, and a broad-spectrum fungicide should be sprayed on the second day after watering to prevent the disease.

In the process of maintenance, the placement of pot seedlings should not be too dense, according to the growth of seedlings, and time seedlings, if placed too dense, plant leaves can not accept sufficient light. With high humidity, leaves and substrates are easy to breed diseases and insect pests.

Light management

Thin-leaf orchid is suitable for semi-overcast environment and scattered light, too strong light will make the leaf sunburn or appear yellow, too weak will cause the plant to blossom less or show dark green. Therefore, the shading management of light intensity should be combined with temperature conditions. Generally speaking. Deciduous species require stronger light than evergreen species, 50% Mel 70% shade is appropriate, and 60% Mel 80% shade is suitable for evergreen species. Use 80% black shading net to shade when the temperature is above 27 ℃ in summer, and 60% Murray 80% shading net when the temperature is below 27 ℃. In winter, you should receive sufficient light according to the actual situation.

Humidity management

Cymbidium prefers high humid environment. According to the temperature and weather conditions of the season, the air humidity is 70% mi 80% in spring and autumn, 80% mi 90% in summer and 60% mi 70% in winter. When the weather is dry and the air humidity is low, the humidity can be increased by atomizing water spraying or wet curtain system. When the air humidity is too high, ventilation regulation should be strengthened. If the temperature is lower than 18 degrees, it is necessary to reduce the air humidity, otherwise low temperature and high humidity will easily lead to diseases and insect pests.

Fertilizer and water management

Watering should be seen in a thousand ways. The cultivation substrate can not accumulate water, and the stagnant water is easy to cause rotten roots. At the same time, it is necessary to keep ventilated at all times, because the orchid is a heavy water plant but is afraid of bacterial infection, so it can not be wet for too long after watering, so that the chances of seedlings getting sick are relatively reduced. In addition, the water quality must be treated with slightly acidic water.

Watering must be based on the season and temperature. Generally speaking, more water should be watered when the temperature is slightly higher from June to September, usually once a day-3 days. Water less when the temperature is low in winter and spring, keep the root a little drier, and water again when the substrate in the basin dries. If the temperature is lower than 5 degrees, watering should be strictly controlled. However, winter is the deciduous orchid bud growth period, as long as the temperature is not less than 18 degrees, it should be timely watering, with the bottom matrix moist for the degree, must not let the basin too wet.

The root system of thin-leaf orchid is fleshy root, Yining should not be thick when applying fertilizer, and it is more appropriate to dilute liquid fertilizer by more than 2000 times. In the peak growth period of spring, summer and autumn, fertilizer with different ratios of nitrogen, phosphorus and potassium was used. In the seedling stage, the proportion of nitrogen and phosphorus fertilizer is usually higher, but not heavy fertilizer, to the middle seedling can focus on phosphorus and potassium fertilizer, in order to facilitate the expansion of pseudocorm. After the middle seedling, you can put some slow-release fertilizer, which is very suitable for the rapid growth of pseudo-corm, and foliar fertilizer can be applied during the seedling period.

When new buds begin to grow in spring, apply water-soluble fertilizers once a week, such as "Huabao" 2000 times diluted original fertilizer or "Huiyou" 25-15-10 orchid special fertilizer. Autumn is the fattening period of pseudocorm, so we can apply fertilizer with the ratio of nitrogen, phosphorus and potassium at 10:20:30. In the middle seedling stage, some varieties can be given heavy fertilizer or a large amount of organic fertilizer, and slow-acting fertilizer can also be applied. The fertilization concentration in the big seedling stage can be increased into a 1000-fold solution and applied once a week. When the vegetative growth is completed, the plant has matured. The fertilizer is generally applied with compound fertilizer with the ratio of nitrogen, phosphorus and potassium at 10:45:20 and potassium dihydrogen phosphate solution fertilizer sprayed to the leaf. Fertilization is suspended for dormant plants with deciduous leaves in winter.

Pest control

Thin-leaf orchid has a variety of diseases caused by fungi and bacteria, such as leaf blight, soft rot, anthracnose, white silk disease, false base atrophy, leaf scorch, root black rot, and so on. Once infected, it will affect vitality and reduce ornamental value. Heavy, it will wither the orchid plant, or even "wipe out the whole army", resulting in certain economic losses. Therefore, in the process of production and planting, it is necessary to spray pesticide prevention on a regular basis, such as the selection of imported pesticides 50% poplar manganese, 5% 100 million lid (free Reed), 62.5% Cyclopycin, 25% carbon grams, 66.5% Puccinia, 53% grams of Rangbao (rotten fast de ning), 70% methyl special killing bacteria, 81.3% Jiaji copper, 40% daclitazine, etc. Domestic pesticides such as blue disease must be treated, 70% zinc Dysen, 75% chlorothalonil, 70% methyl topiramate and other wettable powders, once every 7 to 10 days before the onset of the disease, twice and 3 times in a row, and can be used continuously for 3-4 times after the attack.

The main pests are aphids, shell insects, thrips, whitefly, red spiders, moth larvae, slugs and so on. Aphids can be sprayed with 1000 times of imidacloprid, 1500 times of imidacloprid EC and 2000-3000 times of 21% imidacloprid.

The scale insect harms the pseudo-phosphorus stem and leaves, and the lightly injured plants grow poorly and the leaves turn yellow. Caused by long-term poor ventilation, 40% speed can be used to kill 3000 times of liquid-3500 times of liquid (not suitable for use in flowering), or 2000 times of liquid for killing scale and 3000 times of liquid for spraying. Long-term prevention and control should improve ventilation conditions to avoid high temperature and humidity in the environment. Thrips occur from the growth of new tender leaves to the early flowering stage. the adults can be induced by hanging armyworm paper and their occurrence can be observed. 1000-2500 times of Baimening emulsion or thrips aphids are used in time, sprayed once every 5-10 days, 2 ~ 3 times in a row. Whitefly occurs in a poorly ventilated greenhouse, and in severe cases, the whole leaves and pseudo-phosphorus stems are covered with whitefly, causing the plant leaves to wither and fall off and die. In case of harm, yellow swatch can be used to trap and kill greenhouse whitefly. Red spiders are mainly caused by dry heat and poor ventilation. Acaricides such as diazoke, quick-killing mites, alkyne mites, dabalin and other acaricides can be sprayed with 2000-3000 times liquid, once every 7-10 days, 2-3 times in a row. Spray on the back and depression when spraying. Snails and slugs endanger the young leaves and buds, root tips, buds and petals of the orchid plant, nightly and sunrise, so once they appear, a small number of them can be killed, and a large number of them can be trapped and killed by slug Kexing granules. Or spray 10% of the enemy to the leaf to kill 2000 times to control.

Friends who like flowers and plants, do you all know Boye Orchid? In the editor's opinion, its ornamental value is very high. If you like flowers, you can understand its planting method.