Last week's continuous rains caused some farmers' cotton to be damaged after the drought in the previous section. Due to the increase of groundwater level, the humidity of cotton fields increased. Some cottons transplanted after the rapeseed were harvested, the weeds in the fields were clustered, and some farmers used chemical herbicides to misuse herbicides to damage cotton seedlings. In cotton fields with plastic film mulching and soil blistering, most of the cotton repeatedly fell, making cotton production again and again affected.
Originally, the cotton after the long drought fell in the early June, and the seedlings changed quickly. The development progress was earlier than last year (the same period last year, the accumulated temperature was low and the seedlings were slow), according to our new music on Jidong Farm on June 15 5 groups (villages) such as Changxingpu carried out cotton seedling surveys, and developed early cotton seedlings. There were 1~2 layers of fruit branches. The earliest cotton had blossomed, while the earliest cotton in the same period last year only had fruit branches. .4th floor. After the recent waterlogging, the gratifying conversion of cotton has been disturbed and needs to be taken seriously.
Cotton seedlings first root, drought caused cotton roots to be inhibited, and water damage caused more damage to cotton roots. In the face of the rapid drought and flood climate, we should start from improving the ecological environment of cotton, manage water and fertilizer, multi-pronged, adhere to disaster management, and strive to capture the harvest of cotton.
First, remove waterlogging and promote new roots. Start the existing water conservancy facilities, quickly eliminate the waterlogging around the cotton fields, loosen the field ditch, and make the rain live in the fields, so that the water table in the cotton field is reduced to less than 1 m. Only in this way can cotton roots quickly return to normal growth and development. Do not easily plow the cotton that has not been fully submerged. After the drainage, there is a season to resume growth and development.
Second, after the rain, fertilizer, and promote growth. Rain and heavy rain are very easy to cause fertilizer loss. It is possible to take special contingency measures to supplement the fertilizer. That is, when the weather is fine in the rain, you can apply fertilizer in the cotton line and then loosen the soil. Into the cotton field in the bud stage and the early flowering stage, the application of high-intensity inorganic compound fertilizer and potassium fertilizer is applied, 20~25 kg per mu of compound fertilizer, 15 kg of potassium fertilizer, or 50 kg of bio-organic compound fertilizer, with inorganic application. Compound fertilizer 10~15 kg, potassium fertilizer 15 kg. Cotton that has not entered the bud stage is mainly based on quick-acting nitrogen fertilizer, with 5-7, 5 kg per mu of urea.
Third, chemical regulation, and promote the combination of control. For prosperous cotton, it is advocated to use the delayed plant growth regulator to promote the stability of the auxin or the ketamine spray. Do not use other compounding agents, and the production application often fails. The cotton that enters the bud period is 4 ml or 1 gram per acre, and 8 to 12 ml or 2 to 3 grams per acre into the bud and initial flowering period. The cotton that has not yet been budded is sprayed twice with the promoted plant growth regulator "802" 4000 times.
Fourth, adhere to disaster prevention and comprehensive management. First, there is still a long and effective season for cotton production. It is necessary to establish confidence in the fight against disasters. Second, after clearing the ground, it is necessary to loosen the soil and prevent it from falling again. The cotton film covered by the mulch film should be peeled off in time to prevent the film from falling down, and the second is to prevent premature aging; the third is to apply the medicinal damage to the cotton, which can be sprayed with Huifufeng or Zhuangfuxing active liquid fertilizer 500 times, which can alleviate the phytotoxicity and promote Cotton is long, and it can also be used to protect growth and relieve phytotoxicity by using Baoji or Tianfengsu 800 times solution.
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