The present is an important period for cotton emergence in Xinjiang, which determines the later yield of cotton. Therefore, the field management of cotton farmers after cotton emergence is particularly important. First of all, it is necessary to implement field management measures such as planting and replenishing seedlings, cultivating and weeding, pest control, spraying foliar fertilizers and chemical control. While achieving the goals of promoting weak to strong and early onset and stabilizing growth, we also set up a high-yield framework for stable and high yields.
First, do a good job of fixing and replenishing the seedlings. For cotton sown late, seedlings should be set in early May. It is required that more than 50% of the cotton seedlings should be set before the first true leaves are flattened after emergence. The weak and strong seedlings should be removed during the seedlings. After the seedlings are set, the film holes should be sealed with soil in a timely manner. If there is a shortage of seedlings and broken ridges, seedlings must be replenished in time.
The second is to do a good job in cultivating and weeding. Cultivating is carried out 1-2 times during the seedling stage, usually once after the seedlings are established and before budding. If there is precipitation during the seedling stage, cultivating should be done at the right time after the rain to prevent soil compaction, reduce moisture loss, promote root development, and combine cultivating with cultivating. Remove weeds between membranes promptly.
The third is to pay close attention to pest control. To prevent and control cotton thrips, for late-sown or cotton fields where the damage caused by cotton thrips is severe all year round, systemic high-efficiency and low-toxicity pesticides such as omethoate, acetamiprid or imidacloprid should be used for spray control to prevent and control the cotton thrips damage caused by cotton thrips. Or endless cotton. To control cotton aphids, when a central aphid plant is found, 40% omethoate 1 or Kangfuduo can be used to coat the stems; for cotton fields with many aphid spots, few natural enemies, and a benefit-to-harm ratio lower than 1:200, urine-washing mixture spray can be used Pick and treat to maximize the protection of natural enemies and increase damage control to improve the prevention and control effect.
The fourth is to spray foliar fertilizer on the seedlings. For weak or late-growing cotton seedlings, use 150 grams of urea per acre with a nutritional plant growth regulator, add 30 kilograms of water, and spray foliage 2-3 times to promote early and rapid growth of cotton seedlings.
The fifth is rational chemical control. The seedling stage starts from the 3-leaf stage, and fine-tuning is performed every 12-15 days with mepidamine. The dosage of mepidamine per acre is 0.5-1 g to promote the coordinated growth of cotton seedlings and root penetration.
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