At present, the cotton has entered the budding stage. The management objectives in this period are: multiple buds, early flowering, steady development, and a good production shelf. The main technical measures for field management during this period are:
Correct application of chemical control technology. At present, some cotton fields have been controlled 2-3 times. At present, based on the control of seedling stage, 7-8 leaves are planted and controlled at the budding stage, which has a good effect on the bud stage and the good production shelf. The chemical fertilizers should be based on the cotton varieties and soil fertility. The growth of cotton is determined by the amount of the diamino amine. Generally, 1.5-2 grams of the dildodomamine is used in the normal growth cotton field, 30 kilograms of water is added, and the machine is sprayed. For species that are particularly sensitive to polyamidoamine, they must be used in small quantities several times during chemical control to prevent one-time control of death.
Timely irrigation fertilizer. For cotton, if the head water is too early, the nutrition will grow too vigorously, the buds will be less, and the buds will be too late. The irrigation principle is: the first water is late, the second water is catching, and Sanshui and Sishui see the situation of the seedlings. During the bud period, the fertilizer was top-dressed with irrigation twice. In the bud stage, 2-3 kg of urea and 0.5 kg of potassium dihydrogen phosphate were recovered. Sheng Lei Mu recovery 3-4 kg, 0.5 kg of potassium dihydrogen phosphate.
Strengthen integrated pest control. The most recent insect pests are cotton aphids and red spiders, which are best prevented by spotting. If individual plots occur on a large area, special insecticides should be used for prevention and control. It is strictly forbidden to spray chemical pesticides on large areas to prevent Killing natural enemies caused the ecological balance of cotton fields to be destroyed.
Disease. In the individual plots, blue-wilted wilt disease has occurred. If sporadic diseased plants should be pulled out of the field in time for burning, the best method for prevention and control is to spray foliar fertilizer to promote the growth of cotton plants and enhance disease resistance. Reduce disease occurrence.
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