How to raise White Russo Orchid? Introduction to the main points of culture of Bailasuo orchid

White Russo orchid is native to South America and has an incredible fragrance. And these pure white ghostly flowers will only release the strong fragrance at night. Its flowers bloom many times a year and bloom for a long time. Let's take a look at the main points of its breeding.

Branch

White Russo orchid belongs to the branch of Laeliinae. There are about 17 species of Belasolan; they are native to the tropical United States. The standard and most common Bailasolan is the Bailasolan nodosa, which can be grown in baskets and in containers of orchid mixtures.

White Russo orchids have long, thin, tubular leaves up to a foot long, sometimes spreading or flattening. White Russo orchids and their hybrids have much smaller pseudobulbs than other epiphytic orchids, so leaves generally seem to emerge directly from the rhizome without thick pseudobulbs. A typical white orchid has enlarged ladylike lips and petals and sepals shrink into spear-shaped petals. The white orchid is white to attract moths to pollinate, but the plant has been widely crossed to create flowers of a variety of colors.

Light

Even in the case of direct sunlight, the light of the white la Soran orchid is quite strong and bright. The healthy white lassoran has mottled leaves with reddish marks. Dark green leaves usually indicate that the plant is not getting enough light, so the plant should move to a brighter position.

water

The tubular leaves on the orchid are designed to reduce water evaporation and make it more drought-resistant than many other orchids. Therefore, plants need less humidity and moisture than many other epiphytic orchids. During the growth cycle, it can be watered once a week, while potted white orchids should be watered thoroughly every week. Drooping or wrinkled leaves indicate water stress and plants should be watered as soon as possible.

Fertilizer

White Russo orchid sends out several red leaves in a year, and the healthy plant is the lantern plant throughout the year. Therefore, plants should be fed with a weak fertilizer solution (1 pound per week and 4 intensity per week) throughout the year. Many growers use nylon hoses and controlled release particles to make "fertilizer balls" and then unite the balls on the plants to provide a small amount of fertilizer each time the plants are watered. The nylon fertilizer ball will last for several months.

Temperature

Bailasolan prefers moderate temperatures and blossoms better in warm conditions.

The fragrance of Belasolan is so wonderful on summer nights.

Flowering

The orchid is pollinated by moths, so the flowers on the orchid are pale and attract pollinators. White Russo orchids bloom all year round, with multiple flowers and spikes each time they are flushed. Globular flowers are often seen throughout the year.

White Russo cultivation is quite easy, it is the basic conditions of aerial orchid it can adapt, the humidity is maintained at 75% is ideal, the sun can be relatively sufficient, the temperature must be above 10 degrees. The elegant B.cucullata plant has pendulous, needle-shaped leaves, large flowers, solitary flowers, long florescence and fragrance.

Culture method of Astragalus dawuriensis

Dawuli Huangqi planting selects the sandy loam soil domain or brown forest soil with sunny topography, deep soil layer and fertile soil quality in mountainous and semi-mountainous areas. Flat land chooses sandy loam or alluvial soil with high topography, strong seepage and low groundwater level, and avoids white serous soil, saline-alkali soil, clay loam and stagnant meadow soil.

When planting, Dauri Astragalus should plough deeply and apply stable manure or compost 2500 kg per mu, and calcium superphosphate 25 Murray 30 kg per mu. Make a bed after fine ploughing, 120 cm wide and 30 cm high.

Artificial weeding is the same as field crops. Herbicides can also be used, that is, 150 grams per mu of trifluralin during or after sowing, or 200 grams per mu of lasso.

Ammonium sulfate was applied in early May, 5 kg to 15 kg per mu, urea in early June, 7 MUE per mu in 10 kg, calcium superphosphate in early July, 50 kg per mu, and barnyard manure 2000 kg.

For seed field management, on the basis of general field management (do not get rid of flower buds), an additional application of phosphate and potassium fertilizer was applied in mid-July, 25 kg of calcium superphosphate per mu and 10 kg of potassium chloride per mu to promote flowers and fruits and full grains. Results during the ripening period, in case of high temperature and drought, we should irrigate in time to reduce the hard seed rate and improve the seed quality. The harvest of seeds of Astragalus membranaceus should be carried out immediately when the pods droop and mature in August, otherwise the pods will crack and the seeds will be lost and it will be difficult to harvest. Due to the inconsistency of seed maturity, it should be picked along with ripening. If the seed is kept in a small area, it is best to harvest in stages and in batches, cut off the mature ear one by one, discard the immature fruit at the end of the ear and retain the mature pod in the middle and lower part. If the seed is kept in a large area, it can be harvested at one time when 70% of the fruit is ripe in the field. After harvest, the fruit branches will be hung upside down to dry for a few days, so that the seeds are ripe, then dried in the sun, threshed, cleaned and stored.

Different kinds and selective use methods of herbicides in Corn Field

The use of herbicides in corn field, the main weeds in corn field are Equisetum, amaranth, Chenopodium, Chenopodium, Portulaca oleracea, amaranth, amaranth, quinoa, amaranth, green amaranth, quinoa, amaranth, abutilon, wild watermelon seedlings, axillary amaranth and other weeds. Perennial weeds include Spirulina, Reed, Rhizoma Cyperi, and so on. Let's take a look at the use of herbicides in corn fields.

Pre-seedling herbicide after sowing

1. 40% ethyl atrazine water suspension (ethyl A mixture)

40% atrazine water suspension is a special herbicide for corn field. it has excellent control effect on annual Gramineae weeds in corn field, such as Equisetum, Setaria angustifolia, Euphorbia angustifolia, Euphorbia angustifolia, Elymus, Kentucky bluegrass, etc., and annual broad-leaf weeds such as Chenopodium, Polygonum, amaranth, Solanum nigrum, Portulaca oleracea, iron amaranth, plaster, plaque, ground skin, flying cream, small white grass, duck foot grass and so on. It also has obvious inhibitory effect on sedges and weeds.

40% atrazine water suspension agent not only has a wide herbicidal spectrum, but also has high herbicidal activity and long service life, and is safe for corn and subsequent crops, such as wheat. 40% atrazine water suspension emulsion is used per minute from before the seedling of corn sowing to the 3-leaf stage of weeds after corn emergence. The effect period of summer corn in North China is 2250 to 3000 grams, spring corn in North China is 2250 to 3750 grams, and spring corn in Northeast China is 4500,000 grams, about 750 liters of water is added, and the field effect lasts for 50 days. A single use of medicine can ensure that the whole growth period of corn is free from weeds.

The herbicidal effect of atrazine water is closely related to the soil moisture. The herbicidal effect is good when the humidity is high, but low when the soil is dry. It is usually necessary to irrigate the amount of water or rain once before application, and it is best to apply it before the weeds are unearthed in order to ensure that the efficacy can be brought into full play. If the drug is used before the 3-leaf stage of the weeds and after the 4-leaf stage of the weeds, if the grass age is too old, the efficacy will decrease due to the increase of weed drug resistance, and the dosage should be reduced when using this agent in sandy soil with low organic matter content.

2. Yibao bucket mixture

The mixture of Acetochlor and Acetochlor is a root mixture made from Acetochlor and Baoshou, which can be used to effectively control annual Gramineae and annual and some perennial broad-leaved weeds in corn field and intercropping field of corn and soybean. the field effective period of 30 to 60 days is safe for crops such as corn, soybean and wheat. Apply pesticide before sowing or before seedling after sowing. In spring corn fields in Northeast China, 3000 milliliters of Acetochlor per hectare and 1500 milliliters of Acetochlor per minute plus 1500 grams of Acetochlor per minute in summer corn (or soybean) fields are sprayed evenly. When dispensing, first put the treasure in a small cup and mix it with a small amount of warm water into a mother liquid, pour it into a mixture bucket with half of the water, then add Acetochlor, and then add the other half of the water to stir well, the fan-shaped sprinkler has the best effect.

3. 50% Hebao EC

50% Hebao EC is a new herbicide with high efficiency, broad spectrum and safety. It can effectively control a variety of annual Gramineae weeds and broad-leaved weeds, it is the most effective against Tripterygium przewalskii, Echinochloa barnyardgrass, Saxifraga, Saxifraga, Chenopodium, Chenopodium, amaranth, purslane, amaranth, sausage and Solanum nigrum, and it also has obvious inhibitory effect on some perennial weeds and Cyperaceae weeds.

50% Hebao EC can be used not only for soil closure before sprouting, but also for stem treatment before the 3-leaf stage of weeds after maize emergence. With 1.2-1.5 liters of 50% Hebao EC per minute and 750 liters of water, it can effectively control a variety of weeds. There is a close relationship between soil moisture and efficacy, and the efficacy is high when the humidity is suitable for moisture. The drug is sensitive to weed buds and has the best effect in the early stage before sprouting or seedling after corn sowing.

4. 50% du A mixture

Before the seedlings after corn sowing, 50% of the mixture was 2: 35 kg per hectare and 750 liters of water was added and sprayed evenly on the soil surface. it has a good control effect on annual grasses and annual broad-leaf weeds such as Artemisia mandshurica, Euphorbia angustifolia, Saxifraga, Chenopodium, amaranth, amaranth, plaque, intestine, Xanthium sibiricum, Portulaca oleracea, Solanum nigrum, cotton, etc.

5. Atrazine (atrazine)

Atrazine is a selective pre-budding and post-sprouting herbicide of triazobenzenes. it can be used to control annual monocotyledonous and dicotyledonous weeds such as Setaria paniculata, Setaria angustifolia, Saxifraga, Shepherd's purse, Snakehead, Xanthium, Portulaca oleracea, Solanum nigrum, Euphorbiaceae, Leguminosae, etc., and also has a de facto inhibitory effect on some deep-rooted weeds.

Before the seedlings after corn sowing, 38% atrazine suspension 2.25 kg per minute was used, and before the 3-leaf stage of weeds, 38% atrazine was used per minute, and 750 liters of water was added to spray evenly.

Atrazine has good efficacy, good selectivity to corn and is very safe, but the residual period in the field is as long as 120-160 days. If it is not used properly, the following crops will cause drug damage. It is necessary to strictly control the dosage, do not increase the dosage at will, and pay attention to uniform application to avoid re-spraying and leakage spraying. Atrazine can be mixed with Acetochlor, Duer, Rasol and Caojingjin, which not only expands the herbicide spectrum, but also reduces the soil residue, which is safe for recommended wheat.

6. Acetochlor

Acetochlor is an amide selective pre-bud herbicide. Acetochlor has a special effect on annual Gramineae weeds such as Saxifraga, Tripterygium, barnyard grass, bristlegrass, thrush, Kentucky bluegrass, wild millet and so on. Acetochlor also has a good control effect on broad-leaved weeds such as quinoa, Polygonum polygonum, amaranth and purslane. Acetochlor can be degraded into non-toxic substances quickly after absorbing Acetochlor, so it is safe for corn before sowing. Northeast China uses 50% Acetochlor EC 2.25-3.75 kg per hectare, North and south China uses 50% Acetochlor EC 1.2-2.5 kg per hectare, adds 750 liters of water to spray the surface evenly, and the amount of plastic film covering the field is reduced by about 1 to 3.

The dosage should be increased in the areas with fertile soil and high content of organic matter, while the dosage should be reduced in the areas with barren soil and low organic matter content. High soil moisture is conducive to the absorption of herbicides by weed seeds, and the effect is good, and soil drought affects the efficacy. Therefore, it is best to irrigate the land or rain before application, so that the soil has good moisture.

7. Duer (Metolachlor)

Duer is a selective pre-bud soil treatment herbicide, and the control effect of Gramineae weeds is better than that of broad-leaved weeds. Before the emergence of corn after sowing, spray evenly with 72% Dol EC 1.2-1.8 kg per hectare and 750 liters of water. Use a low amount of sandy soil and a high amount of clay, such as when the soil surface is dry, it is best to mix the soil shallowly.

8. Lazol (alachlor)

Rasol is an amide selective pre-bud herbicide with high herbicidal activity and a guilt-free period of 4-8 weeks in soil. It can effectively control annual Gramineae weeds and some annual dicotyledonous weeds. Before the seedlings after corn sowing, eat large pot rice with 3-4.5 thousand EC per hectare, add 750 liters of water and spray evenly. If rain or irrigation occurs within one week after application, it is beneficial to bring the efficacy into full play. Under dry conditions, the soil should be mixed with a depth of 2cm to 4cm, which can improve the weeding effect.

9. Hornes

Hornus is an amide selective pre-bud herbicide, which has a special effect on annual grasses and broken rice, such as barnyardgrass, Setaria angustifolia, Euphorbia angustifolia and so on. It also has a control effect on Polygonum, Chenopodium, amaranth, duckweed, Solanum nigrum, Portulaca oleracea, Radix Aconitum and so on. Weeds should be applied before emergence, but they cannot be killed after they sprout and grow. Before planting corn after sowing, 0.9-1.2 litres per hectare of 90% Hornes EC was used in North China, 1.5-1.8 litres in Northeast China, 0.6-0.9 litres in the Yangtze River Basin and South China, 450 litres of corn covered with plastic film, 600 liters of water added, and sprayed on the surface. After applying the formula, a certain amount of soil moisture is needed to give full play to the efficacy of the drug. In areas with drought or less rainfall, soil treatment can be used before sowing, shallow soil 2-3 cm after application, and sowing after mixing.

10. Mixed use of herbicides

Different herbicides have different herbicide spectrum. although the herbicide spectrum of some herbicide varieties is relatively wide, the herbicide spectrum is limited due to the limitation of crop safety, and some herbicides have high water solubility or long effective period in the field. excessive dosage or uneven application are easy to cause residual toxicity to current crops or subsequent crops. Therefore, the herbicide spectrum is different in production, and the two herbicides with complementary advantages and disadvantages are properly reduced and mixed, which not only expands the herbicide spectrum and significantly improves the weed control effect, but also avoids the possibility of drug damage to current crops and residual toxicity to stubble crops.

Stem and leaf spray herbicide

A Baotong mixture is a disposable post-seedling herbicide used in the jade field composed of atrazine and Baocheng. It can control many kinds of weeds and broad-leaved weeds in corn fields, such as barnyardgrass, horse tang, sophora officinalis, dogweed, wild oat, wild sorghum, quinoa, amaranth, cauliflower, duckweed, shepherd's purslane, pig hair, wild gourd seedling, ragweed, borage, weasel flower, thorn and so on. The effect period is moderate, it is safe for the crops of the current season and the following crops, and it can also achieve a good weed control effect under drought conditions, and the pesticide can be applied in the 3-5 leaf stage of maize. The summer corn field in North China uses 38% atrazine 1500 ml plus 25% Baocheng 60 grams per hectare, the northeast spring jade field uses 38% atrazine 2250 ml plus 25% Baocheng 750g per hectare, adds water 450L, and sprays evenly. If the spray volume of 0.1% 0.2% Nonionic surfactant or neutral washing powder can improve the weeding effect.

Corn seedlings after emergence 3 to 5 leaf stage, monocotyledonous weed 1 leaf 2 leaf stage, dicotyledonous weed 2 leaf stage, each minute available 40% atrazine water suspension emulsion 3000ml 3750ml, or 4% Yunongle water agent 120002500ml, or 50% mixture 3000 ml, or 38% atrazine gel suspension 2250 ml plus 33% herbicide EC 1500 ml, or 38% atrazine gel suspension 2250 ml plus 4% Yunongle water agent 900ml Or 38% atrazine gel suspension 1800 ml plus 48% Baicaodui 300ml, water 750kg uniform spray, corn fields with heavier broadleaf weeds can be used in corn fields with 75% giant star (broadleaf net) dry suspension 15g per hectare, or 75% Baoshou (broad leaf powder) 15g per hectare, or 48% Baicaodui water agent 375ml 450ml, or 72% 2.4-butyrate EC 750ml. Or 20% to reduce EC 750 to 900 ml, add 450 liters of water, spray evenly.

If in some areas, due to labor shortage in the busy summer before and after corn sowing, or due to hot and rainy weather, there is no time for pesticide and weeding, and grass famine occurs in the middle and later stages of corn growth, with 20 grams of water agent 3 liters per minute hectare, or 10% glyphosate water agent 9 liters, 41% Nongda water agent 3 liters, 450 liters of water, and how to enlarge the sprinkler to spray weeds directionally. Try to avoid spraying the liquid on the stems and leaves of corn.

Herbicide in no-tillage corn field

The mixture of Yi A mixture and Nongle barrel is an ideal herbicide for no-tillage and stubble sowing corn fields. it has broad herbicide spectrum and remarkable efficacy. It can not only control all the weeds that have emerged, but also control or control the annual Gramineae and broad-leaved weeds that have not emerged. The effect is long, and one application can ensure that the whole growing season is free from weeds, and it is safe for the current season and the following crops. After wheat harvest and before corn sowing, 40% ethyl Arab mixture 2250 kg / ha plus 74.7% farmer Le 600g 900 g per minute, 450 liters of water, the height of the sprinkler should be 30F cm higher than the weeds, evenly sprayed.

Herbicide in corn field covered with plastic film

In the spring corn area with low temperature and drought, plastic film mulching cultivation techniques are often adopted to increase the soil temperature and soil moisture, so as to promote the emergence and growth of maize seedlings. Because the temperature in the plastic film is high, the temperature is very beneficial to the effect of herbicides. Therefore, compared with open field application, the lower dosage of herbicides (generally less than the conventional dosage of 1 inch 4 times 1 inch 2) can achieve a good herbicidal effect. Per minute ha, 40% Acetochlor water suspension emulsion 1800-2250ml, or 50% Acetochlor EC 750ml-1050ml, or 72% dole EC 900ml-1200ml, 90% Hornez EC 600ml-750ml, or 48% Lasol EC 2250 ml, or 33% herbicide EC 1500ml-2250ml, after corn sowing was suppressed, water was added to 450ml, sprayed evenly, and then covered with film.

If the drug is applied with seedling belt, the dosage should be calculated according to the actual drug area.

Herbicide in wheat intercropping corn field

The interplanting cultivation of wheat and corn in North China is to sow corn on the ridge of wheat field in the middle and last ten days of May. Before sowing, the dosage is calculated according to the sown area of corn (that is, the actual application area), water spray soil surface, rotary tillage and stubble after wheat harvest, get rid of the remaining weeds in the wheat field, and then according to the recommended wheat belt, the dosage should also be calculated according to the actual spraying area.

In order to improve labor efficiency, we can also use corn interplanting without chemical application, shallow ploughing after wheat harvest (corn has emerged), and then apply soil treatment herbicides that are safe for corn seedlings, such as 40% Atrazine water suspension, Yibao bucket mixture and 50% Hebao EC and so on.