Cotton Bolling Period Management Technology
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First, the main measures to promote the early maturity of cotton
1. Strengthen the pruning and pushing of the plant and rake the spurs If the lush foliage of the cotton field, can destroy the old leaves of the lower part of the main stem, the empty fruit branches are cut to enhance the ventilation and light transmission of the cotton fields, reduce the humidity, and at the same time, the beneficial consumption of nutrients can also be reduced. Bolls normal boll opening. For cotton fields with particularly severe shading, the adjacent two rows of cotton plants will be pushed to the left and right sides by hand, showing an “eight†shape to increase the ventilation and light transmission between the rows, promote the maturity of bolls, and reduce the loss of rotten bells.
2. Phosphorus spraying time of foliar spraying is generally after flowering. Use 1%-2% of superphosphate calcium leaching solution and spray once every 10 days. Phosphorus spraying leaves can promote the nitrogen-containing compounds in the leaves to accelerate the delivery of cotton bolls, accelerate the ripening of cotton bolls, and crack and open the bolls earlier.
3, the application of ripening agent ethephon ethephon can not generally spray prematurely, in our area generally in early October, 40% of ethylene dilute 100-170 ml per mu, 50 kg of water, the whole plant of cotton Spraying can significantly promote precocity and reduce rotten bells. In order to ensure the drug effect when used with the mix, at the same time, can not be mixed with alkaline pesticide spray.
Second, prevent premature aging, the main measures of greed prevention against premature aging, greed for youth work, in the birth of cotton before and during the middle term to do a good job. If the cotton decay or greediness is discovered only when bolling starts, some corresponding remedial measures can only be taken.
1, timely spray nitrogen fertilizer. After the urea is sprayed on the leaf blade, it is quickly absorbed, which can increase the nitrogen level of the leaf itself, increase the photosynthesis ability, prolong the functional period of the leaf, and synthesize organic nutrients for the development of bolls to enrich the boll weight.
2. Flood control and drought prevention Pay attention to regulate soil moisture and improve soil ventilation to maintain the vitality of the root system, and strive to raise roots to prevent premature aging.
3, to prevent greed green cotton late greediness to timely eradicate axillary buds, knock down the overlapping leaves, timely spraying of phosphorus and ethephon, so that the cotton leaf nutrient accelerated delivery to the boll, increase boll weight.
Third, fine harvesting, flowering floes when the majority of cotton plants already have 1-2 bolling bells, that is, should start harvesting, after every 7-10 days picking once. When picking cotton, the majority of cotton farmers should pay attention to the collection, splitting of drying, collection, sub-rolling, and sub-sale, which has a great effect on improving cotton production and improving fiber quality.
