First, the cotton seedlings at the seedling stage of spraying cotton fertilizer spraying fertilizer at the seedling stage leaves, can promote the early emergence of cotton seedlings, promote weak seedlings into strong seedlings, and can control plant height, prevent leggy. Optional spray fertilizer No. 1. It is dominated by nitrogenous fertilizers, containing 34.7% nitrogen, 6.6% phosphorus, and 6.6% potassium, as well as boron, iron, molybdenum, zinc, magnesium, manganese and copper. The concentration is 1.5-2%. Before the spraying, the powder is melted with a small amount of water, and then the amount of the sufficient amount of water is sprayed in the windless afternoon at 4:00 pm. The back of the cotton leaf is a sponge tissue, which has a strong suction ability. The fertilizer should be sprayed as far as possible on the back of the leaf to increase the absorption and utilization. It is also possible to use 701, which has a concentration of 4010-6 to 6010-6, to promote Miao Qi and Miao Zhuang, to bud and flower early, and to reduce the disease. If the growth of cotton seedlings is not neat, for those which are short and thin, they can spray the concentration of 4010-6 to 5010-6, and add 1-2% of superphosphate soaking filtrate; it can also spray 3010-6-4010. -6 Solution concentration of 720 and 410-6 ~ 610-6 solution concentration of 90%, plus 1-2% of superphosphate and 1% of urea (biuret content of more than 1.5% of urea, can not be sprayed Shi Ye Department) promoted weak seedlings to catch strong seedlings.
In the 5-leaf period of cotton seedlings, if it grows well and has prosperous growth, it can spray 50 kg of chlorella solution of the concentration of 4010-6 to 8010-6 (equivalent to 2-4 grams of active ingredient) to make it plant type. Compact, small and thick leaves, and promote the development of the root system, in order to facilitate budding and ringing.
Second, the cotton buds in the bud stage of the spray fertilizer into the vegetative growth and reproductive growth and progress, still dominated by vegetative growth. At this time, the temperature is high and the light shines. If the rain is abundant, the plants grow faster. For normal growing cotton fields, potassium dihydrogen phosphate 300-500 times solution plus appropriate amount of zinc fertilizer can be used: If the growth peak of cotton plants occurs before flowering, it indicates that the vegetative growth is too fast and may be closed early to make the field microclimate worse. Increase the shedding of the bells in the middle and lower parts. Such cotton fields need to be sprayed with inhibitors to control the growth of the main stem and the fruit branches of cotton plants. That is, in the cotton bud stage, with 1.5 g per acre of dildoamine or regulating amines, spray 50 kg of water.
Third, the flowering and bolling stage of cotton leaf cotton fertilizer boll period is the vegetative and reproductive growth and development, but will gradually transform into reproductive growth as the center. At this time, the cotton plant needs a large amount of fertilizer, which is a crucial period for the production.
During the flowering period of cotton, the best spraying method is to use leaf fertilizer 2 with rich nitrogen, phosphorus, and potassium contents, with a concentration of 2%, and 75 kg of diluted solution per mu, which can promote high yield and good quality.
In the flowering stage of cotton, the leaves may be sprayed with fertilizer, which can also be used to obtain too much fertilizer. The ordinary concentration solution is diluted to 1000 times (100 kg per bottle of water for 100 kg), and the high concentration solution is diluted to 5000 times (that is, 10 for each The milliliter of water is 50 kg), sprayed on the back of the cotton leaf. You can also choose to spray on the hair (a humic acid type of liquid fertilizer), diluted 500-1000 times, spray on the back of cotton leaves. It can not only promote the robust development of cotton plants, but also delay the damage of drought and pests to cotton plants.
The spraying of leaves at the flowering stage should be targeted. Such as plant dwarf, underdeveloped root system, dark purple leaves, indicating that phosphorus deficiency, can spray 2% superphosphate, or 0.2-0.3% potassium dihydrogen phosphate, 60 kg per acre spray fertilizer to reduce the bell drop off , It can also play a role in strengthening the pomegranate. If the growth is not prosperous, the leaf color is light yellow, and when nitrogen is insufficient, 1% urea can be sprayed, and 50 kg per mu can be sprayed.
Spraying hormones during the flowering and bolling period can also reduce the shedding of boll bells, promote multi-crusted peach, and stabilize the peach. During the flowering period, 50-75 kilograms of the spirit solution of the 2010-6 solution was increased per mu, or 50 kilograms of the solution of the 30-alkanol solution with the concentration of 0.110-6, and satisfactory results were achieved. It can also be sprayed during the flowering and bolling period with the concentration of 2010-6 solution of 701, and 50 kg of fertilizer solution per acre, which can increase the number of bolls and increase the length of velvet. It is also possible to use the 90% solution of 2010-6 solution concentration in the flower and boll period and put it into the “point sprayer†to spray the day’s corolla or 1-3 days of young bell (when the young bell is sprayed, the corolla should be removed) Or use a brush or a small drop of the bottle to spread or spot the liquid on the corolla or young bell. The whole plant can also be sprayed with 90% of the 1010-6 solution concentration. After the treatment of cotton by the ninety-nineth, the bell falls, the output increases, and the fiber grows, but the infertile seeds increase, and the seed field should not be used.
After flowering and topping, when the top fruit branch grows 1-2 fruits, if the growth of the cotton plant is still too prosperous, 5010-6 solution concentration of CCC can be sprayed to 30 kg to control leggy. However, before the topping and within 5 days after the topping, no KHC could be sprayed to prevent the top fruit branches from coming out and causing a reduction in production.
In the cotton boll opening stage, the nutrient growth is almost stopped, the leaves gradually become old, and the ability of the root to absorb fertilizer and water is weakened. For premature decompensation of cotton, per acre can be sprayed 1-1.5% urea 60-75 kg; for normal growth or a growing trend of the cotton field, can spray 2-3% of superphosphate 60-75 kg of leachate, both against premature aging, It also promoted premature maturity.
For greedy and late-maturing cotton, when most of the bolls have basically grown up, and began to harvest, they can use 40% ethephon 100-150 grams per acre, add 30 kilograms of water, and spray the leaves to promote the early maturity of cotton and improve the cotton. grade.
In the 5-leaf period of cotton seedlings, if it grows well and has prosperous growth, it can spray 50 kg of chlorella solution of the concentration of 4010-6 to 8010-6 (equivalent to 2-4 grams of active ingredient) to make it plant type. Compact, small and thick leaves, and promote the development of the root system, in order to facilitate budding and ringing.
Second, the cotton buds in the bud stage of the spray fertilizer into the vegetative growth and reproductive growth and progress, still dominated by vegetative growth. At this time, the temperature is high and the light shines. If the rain is abundant, the plants grow faster. For normal growing cotton fields, potassium dihydrogen phosphate 300-500 times solution plus appropriate amount of zinc fertilizer can be used: If the growth peak of cotton plants occurs before flowering, it indicates that the vegetative growth is too fast and may be closed early to make the field microclimate worse. Increase the shedding of the bells in the middle and lower parts. Such cotton fields need to be sprayed with inhibitors to control the growth of the main stem and the fruit branches of cotton plants. That is, in the cotton bud stage, with 1.5 g per acre of dildoamine or regulating amines, spray 50 kg of water.
Third, the flowering and bolling stage of cotton leaf cotton fertilizer boll period is the vegetative and reproductive growth and development, but will gradually transform into reproductive growth as the center. At this time, the cotton plant needs a large amount of fertilizer, which is a crucial period for the production.
During the flowering period of cotton, the best spraying method is to use leaf fertilizer 2 with rich nitrogen, phosphorus, and potassium contents, with a concentration of 2%, and 75 kg of diluted solution per mu, which can promote high yield and good quality.
In the flowering stage of cotton, the leaves may be sprayed with fertilizer, which can also be used to obtain too much fertilizer. The ordinary concentration solution is diluted to 1000 times (100 kg per bottle of water for 100 kg), and the high concentration solution is diluted to 5000 times (that is, 10 for each The milliliter of water is 50 kg), sprayed on the back of the cotton leaf. You can also choose to spray on the hair (a humic acid type of liquid fertilizer), diluted 500-1000 times, spray on the back of cotton leaves. It can not only promote the robust development of cotton plants, but also delay the damage of drought and pests to cotton plants.
The spraying of leaves at the flowering stage should be targeted. Such as plant dwarf, underdeveloped root system, dark purple leaves, indicating that phosphorus deficiency, can spray 2% superphosphate, or 0.2-0.3% potassium dihydrogen phosphate, 60 kg per acre spray fertilizer to reduce the bell drop off , It can also play a role in strengthening the pomegranate. If the growth is not prosperous, the leaf color is light yellow, and when nitrogen is insufficient, 1% urea can be sprayed, and 50 kg per mu can be sprayed.
Spraying hormones during the flowering and bolling period can also reduce the shedding of boll bells, promote multi-crusted peach, and stabilize the peach. During the flowering period, 50-75 kilograms of the spirit solution of the 2010-6 solution was increased per mu, or 50 kilograms of the solution of the 30-alkanol solution with the concentration of 0.110-6, and satisfactory results were achieved. It can also be sprayed during the flowering and bolling period with the concentration of 2010-6 solution of 701, and 50 kg of fertilizer solution per acre, which can increase the number of bolls and increase the length of velvet. It is also possible to use the 90% solution of 2010-6 solution concentration in the flower and boll period and put it into the “point sprayer†to spray the day’s corolla or 1-3 days of young bell (when the young bell is sprayed, the corolla should be removed) Or use a brush or a small drop of the bottle to spread or spot the liquid on the corolla or young bell. The whole plant can also be sprayed with 90% of the 1010-6 solution concentration. After the treatment of cotton by the ninety-nineth, the bell falls, the output increases, and the fiber grows, but the infertile seeds increase, and the seed field should not be used.
After flowering and topping, when the top fruit branch grows 1-2 fruits, if the growth of the cotton plant is still too prosperous, 5010-6 solution concentration of CCC can be sprayed to 30 kg to control leggy. However, before the topping and within 5 days after the topping, no KHC could be sprayed to prevent the top fruit branches from coming out and causing a reduction in production.
In the cotton boll opening stage, the nutrient growth is almost stopped, the leaves gradually become old, and the ability of the root to absorb fertilizer and water is weakened. For premature decompensation of cotton, per acre can be sprayed 1-1.5% urea 60-75 kg; for normal growth or a growing trend of the cotton field, can spray 2-3% of superphosphate 60-75 kg of leachate, both against premature aging, It also promoted premature maturity.
For greedy and late-maturing cotton, when most of the bolls have basically grown up, and began to harvest, they can use 40% ethephon 100-150 grams per acre, add 30 kilograms of water, and spray the leaves to promote the early maturity of cotton and improve the cotton. grade.
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