The roots of cotton seedlings are firstly rooted, and the drought causes the roots of the cotton seedlings to be inhibited. Waterlogging damages the roots of the cotton seedlings. In the face of a drastic drought and flooding climate, we should start with improvement of the ecological environment of cotton, transport water and fertilizers, and implement a multi-pronged approach, insist on disaster management, and strive to seize the harvest of cotton.
First, eliminate waterlogging and promote new roots. Start the existing water conservancy facilities, quickly eliminate the waterlogging around the cotton fields, loosen the trenches in the fields, and achieve rain and dry weather, so that the groundwater level in the cotton fields can be reduced to less than 1 meter. Only in this way can the cotton root return to normal growth and development quickly. All cotton that has not been completely submerged should not be easily plowed. After the drainage, there will be seasons to restore growth and development.
Second, make up after the rain, fast growth. Heavy rainfall is very easy to cause fertilizer loss, and it is possible to take special contingency measures to compensate the fertilizer. That is, when the weather is fine, it can be used as a fertilizer in the cotton and then loosed. During the budding and early flowering cotton fields, high-content inorganic compound fertilizers and potassium fertilizer are mainly used, with 20-25 kg of compound fertilizer per mu, 15 kg of potash fertilizer, or 50 kg of bio-organic compound fertilizer. 10 to 15 kg of compound fertilizer and 15 kg of potash. The cotton that did not enter the bud stage was dominated by the application of available nitrogen fertilizer, and the urea per mu was 5-7,5 kg.
Third, chemical regulation, promote control and integration. For the prosperous cotton, it is advocated to use a slow-growing type of plant growth regulator to enhance the stability of the melatonin or the dilute amine spray, do not use other compounding agents, and the production application often has mistakes. The cotton entering the bud stage uses 4 milliliters or 1 gram per acre, and enters 8-12 milliliters or 2 to 3 grams per mu for Shenglei and early flowering stages. For budding cotton, it was sprayed twice with a booster plant growth regulator “802” 4000 times.
Fourth, persist in disaster prevention and comprehensive management. First, there is still a long and effective season for cotton production. It is necessary to establish the confidence to fight against disasters. Second, after loosening, it is necessary to tamper with soil to prevent further lodging. Plastic film covered cotton fields, timely removal of film, one anti-lodging, two prevent premature aging; Third, the emergence of phytotoxic cotton, can be sprayed with Hui Man Fung or Zhuang Fu Xing active liquid fertilizer 500 times, both to ease the injury, but also to promote The cotton is long and fast, and it can also be used to keep oyster or 800-fold solution of Tianfengsu, and it can also play a role in promoting growth and relieving phytotoxicity.

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