Ditching and draining water quickly removes clear water, reduces waterlogging in cotton fields, and deep digging three trenches. Not only does it enable clear water drainage, but more importantly, it reduces groundwater level and soil water content to remove dark spots in cotton fields and timely clear the trenches.
Scientific fertilization 1. Waterlogged control type. It mainly refers to three types of seedlings and cotton fields that have been flooded for more than 36 hours. The cotton fields do not form water control. During the actual water control period, these cotton fields should be followed by quick-acting nitrogen fertilizer, and 10 kg of urea per mu or diammonium phosphate 15 kg. 2. Rainy hair style. As cotton is currently in a critical period of vegetative growth to reproductive growth, long-term heavy rain inhibits the reproductive growth of cotton, cotton vegetative growth is too strong, cotton forms water, cotton plants are long, and buds are severely shed. For water-based cotton, special quick-acting nitrogen fertilizer should be reduced, and the Huahua No. 3 cotton topping agent should be sprayed in time to force the top of the cotton to return to the development of the cotton peach, weakening the top advantage until the top stops growing. Thereby achieving the purpose of topping. When used together with a small amount of ketamine, it can effectively improve the canopy permeability of the cotton field, prevent premature aging, increase the effective boll weight, increase the yield, and increase the efficiency.
The root dressing and external flooding caused the cotton root system to be seriously damaged, and the nutrient absorption was blocked. Through the root dressing, the cotton nutrients could be quickly supplemented, the cotton resistance to waterlogging and the cotton buds could be reduced. Specific methods: 200 grams of urea per acre, 100 grams of potassium dihydrogen phosphate, 100 grams of boron fertilizer combined with cotton Zhuang Ti Ling 2 tablets with 50 kg of water for foliar spray, foliar spray when paying attention to cloudy or sunny In the morning and evening, the concentration must not be too large.
After a long period of flooding, the cultivating and cultivating of the cotton is very weak. If the lodging is serious, it must be quickly corrected and cultivated. When the soil moisture is allowed, the cultivating and deep cultivation are carried out quickly. Inter-cultivation is good for breaking the soil compaction, promoting root respiration and accelerating root growth.
Prevention and treatment of pests should promptly control third-generation cotton bollworm, second-generation red bollworm, corn borer, aphid, red spider and other pests. Targeted control of cotton blight and prevention of cotton bell disease in advance.
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