The full control of cotton is a cultivation technique using artificial or natural plant growth regulators (hormones) at different stages of cotton growth. At present, the main application of production is the use of dilute amines (or auxiliaries) for “one spray (soaking) three sprays (bud stage, early flowering stage, and after topping)â€. Late-maturing cotton is supplemented with ethephon ripening.
Diclodomamine can regulate the endogenous hormone system, directionally induce organ development at different stages of growth and improve physiological function. Seed soaking or spraying with dilute amine can increase the content of cytokinin and auxin in cotton seedlings, induce lateral roots, promote the establishment of root system, enhance the vitality of roots, and achieve root-sprout, strong seedlings, stable growth, strong buds and early flowering. The effect is to enhance the drought resistance, pupa and stress resistance of cotton plants, increase the chlorophyll content and photosynthetic efficiency, and coordinate the management of water and fertilizers to simplify early pruning. The spraying of dilute amines at the early flowering stage can shape the middle and strong lines, optimize the canopy structure, regulate nutrient distribution, promote early bell and boll development, postpone line closure, increase root activity, and simplify mid-stage pruning. Spraying after topping can be used to compete for peaches, early autumn peaches, increase boll weight, prevent late-maturing lust, and simplify late pruning.
(1) Use time and amount of shrinkage
a. Soaking. Before sowing, soaking for 8-12 hours with 0.15-0.2% (100 kg of water plus 15 g of dilute amine). Or in the cotyledon flattened with a 0.02% (100 kg of water plus 2 grams of dilute amine) spray once to strengthen the root seedlings to enhance stress resistance.
b. Spraying in cotton fields. According to the "one, two, three" mastered, that bud period per acre spray 1 grams of pure products, early flowering period of 2 grams, 3 grams after the top, before and after the interval of 15 to 20 days, the actual amount of fertilizer according to the specific field level , Years of drought, density, size and strength, discretionary increase or reduction (quantity, time), flexibility. Use time and usage are as follows:
Bud stage: mid-ripening spring cotton (including transplanting and interplanting) 8-10 leaf stage, 0.5-1 g (15% g) of monomethylamine (pure product) plus 15-25 kg of water sprayed per acre; live short-season cotton 5-6 In the leaf stage, spray 0.5-1.3 g per mu with 15-30 kg of water at the top. To root and strong seedlings to control buds prosperous.
Flowering period: Spraying at the tip of 1.5-2 g water and 25-28 kg per acre, the short season cotton can not spray to control the growth rate of the top bud, postpone the closure of the line, shape the ideal line, optimize the canopy structure, and promote the development of bolls .
After 7-10 days of topping, spray 3-5 grams of water with 35-40 kg per acre to spray the upper part of the top 4-5 fruit branches to control the buds, increase the weight, simplify the late pruning, and prevent late-maturing lust.
(2) Precautions
a. Strengthen fertilizer and water management. Shrinkage can increase chlorophyll content, 5-7 days after spraying, leaf color gradually deepens, and it becomes green after 10 days. This phenomenon is not fertilizer and water, and the cotton field after the whole process of chemical control is controlled by applying organic fertilizer and phosphate fertilizer on time. The bud fertilizer is the head of the fertilizer, reapplying the flower bell fertilizer and the capping fertilizer after the topping, and the drought should be promptly irrigated in the later period, and the control should promote the high yield.
b. Selection of the object field. The whole process of controlled cultivation is mainly used in cotton fields with good soil and fertilizer and water conditions, high density, strong growth, loose plants, and early line closure. The cotton fields with thin density and weak growth should be used according to the situation of cotton growth and drought and flood conditions. In the long-term drought-ridden cotton fields, except for irrigation and the use of cotton that has a tendency to grow, other cotton can be used or not used.
c. Spray method. It is required that the top of each plant or the top of the fruiting branch should be uniform and the amount of water should not be drip. It is required to be performed after 3:00 pm to prevent evaporation at high temperatures. Rain should be sprayed 6 hours after spraying, and the amount should be reduced by half.
d. Remedial measures. If the concentration of dinodomine is too heavy, 0.02-0.04% of “90%†or 1% urea solution can be sprayed for remediation and irrigation to ease the control and promote the normal growth of cotton plants.
Diclodomamine can regulate the endogenous hormone system, directionally induce organ development at different stages of growth and improve physiological function. Seed soaking or spraying with dilute amine can increase the content of cytokinin and auxin in cotton seedlings, induce lateral roots, promote the establishment of root system, enhance the vitality of roots, and achieve root-sprout, strong seedlings, stable growth, strong buds and early flowering. The effect is to enhance the drought resistance, pupa and stress resistance of cotton plants, increase the chlorophyll content and photosynthetic efficiency, and coordinate the management of water and fertilizers to simplify early pruning. The spraying of dilute amines at the early flowering stage can shape the middle and strong lines, optimize the canopy structure, regulate nutrient distribution, promote early bell and boll development, postpone line closure, increase root activity, and simplify mid-stage pruning. Spraying after topping can be used to compete for peaches, early autumn peaches, increase boll weight, prevent late-maturing lust, and simplify late pruning.
(1) Use time and amount of shrinkage
a. Soaking. Before sowing, soaking for 8-12 hours with 0.15-0.2% (100 kg of water plus 15 g of dilute amine). Or in the cotyledon flattened with a 0.02% (100 kg of water plus 2 grams of dilute amine) spray once to strengthen the root seedlings to enhance stress resistance.
b. Spraying in cotton fields. According to the "one, two, three" mastered, that bud period per acre spray 1 grams of pure products, early flowering period of 2 grams, 3 grams after the top, before and after the interval of 15 to 20 days, the actual amount of fertilizer according to the specific field level , Years of drought, density, size and strength, discretionary increase or reduction (quantity, time), flexibility. Use time and usage are as follows:
Bud stage: mid-ripening spring cotton (including transplanting and interplanting) 8-10 leaf stage, 0.5-1 g (15% g) of monomethylamine (pure product) plus 15-25 kg of water sprayed per acre; live short-season cotton 5-6 In the leaf stage, spray 0.5-1.3 g per mu with 15-30 kg of water at the top. To root and strong seedlings to control buds prosperous.
Flowering period: Spraying at the tip of 1.5-2 g water and 25-28 kg per acre, the short season cotton can not spray to control the growth rate of the top bud, postpone the closure of the line, shape the ideal line, optimize the canopy structure, and promote the development of bolls .
After 7-10 days of topping, spray 3-5 grams of water with 35-40 kg per acre to spray the upper part of the top 4-5 fruit branches to control the buds, increase the weight, simplify the late pruning, and prevent late-maturing lust.
(2) Precautions
a. Strengthen fertilizer and water management. Shrinkage can increase chlorophyll content, 5-7 days after spraying, leaf color gradually deepens, and it becomes green after 10 days. This phenomenon is not fertilizer and water, and the cotton field after the whole process of chemical control is controlled by applying organic fertilizer and phosphate fertilizer on time. The bud fertilizer is the head of the fertilizer, reapplying the flower bell fertilizer and the capping fertilizer after the topping, and the drought should be promptly irrigated in the later period, and the control should promote the high yield.
b. Selection of the object field. The whole process of controlled cultivation is mainly used in cotton fields with good soil and fertilizer and water conditions, high density, strong growth, loose plants, and early line closure. The cotton fields with thin density and weak growth should be used according to the situation of cotton growth and drought and flood conditions. In the long-term drought-ridden cotton fields, except for irrigation and the use of cotton that has a tendency to grow, other cotton can be used or not used.
c. Spray method. It is required that the top of each plant or the top of the fruiting branch should be uniform and the amount of water should not be drip. It is required to be performed after 3:00 pm to prevent evaporation at high temperatures. Rain should be sprayed 6 hours after spraying, and the amount should be reduced by half.
d. Remedial measures. If the concentration of dinodomine is too heavy, 0.02-0.04% of “90%†or 1% urea solution can be sprayed for remediation and irrigation to ease the control and promote the normal growth of cotton plants.
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Digital Endoscope
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