First, the current situation of cotton production At present, the province's cotton has entered a full bloom bell, the situation from the Fushun peach survey and the current growth point of view, this year's cotton production in our province can be described as human efforts, days of help, favorable weather, cotton growth appears There have been few good situations over the years. However, the existing and facing problems are also very prominent. First, heavy rains in mid-July caused severe waterlogging disasters in cotton production in some of the major cotton-producing areas in our province. Some crops in the cotton fields were harvested. The lower part of the cotton stains on the rotten peaches and the middle part fell off. The cotton leaves were yellow. The second is the large area of ​​the occurrence of Verticillium wilt, and the serious seedlings are dead, which affects the normal growth of cotton and further reduces the cotton planting density. Third, due to lack of fertilizer or waterlogging on some plots, there are signs of flower tops and premature decompensation. In particular, this year's cotton is generally known as early-onset, the area of ​​insect-resistant cotton is large, and there is a very high risk of premature senescence in the latter part of cotton. Fourth, this year, fruit sticks have lower birthplaces, more peaches in the lower seats, and more fertilizer and water lines. They have closed the line early and are growing vigorously in the cotton fields. They are hidden in the fields and are very vulnerable to rotten peaches. Fifth, four generations of cotton bollworms are expected to have local occurrences in most of the cotton areas in the province. In the second and later stages of management, there are 10-15 days of effective budding for cotton this year, and there are still 40 days for effective flowering periods. Good management of cotton fields in this period is of great significance for capturing the full-scale harvest of cotton and achieving the goal of increasing cotton farmers' income. The current management goals are: attacking autumn peaches, invigorating peaches, increasing weight, preventing premature aging, preventing rotten peaches, and preventing insect pests, so that cotton grows tender and tender in August, and healthy in September; , Autumn peach top. Management measures, focus on the following points: 1, grab Pu Shi cover top fertilizer. Before August 15th, all the cotton fields except for the prosperous, must apply a flower peach fertilizer (cover top fertilizer) once, to grab 10-15 pounds of urea from deep Shixue, in order to promote vegetative growth and flower bud differentiation, prevent Premature aging. In the later stage, all cotton fields should be sprayed with 1% urea plus 0.2% potassium dihydrogen phosphate, once every 7-10 days, delaying leaf senescence and promoting peach foot clothing. 2, timely classification topping. Normally growing cotton, before and after the beginning of autumn, topping; delaying or delaying the top of the affected cotton, but no later than August 15th. Several fruit branches. 3, due to seedlings do a good job tone: after the top (5-7 days), per acre by 3-4.5 grams of shrinking water and 90 kg of water spray, to prevent the top fruit branch elongation and excessive ineffective growth. The principle of curtailing the use of shrinkage is about 4.5 grams of cotton growing around and 3 grams of cotton growing weaker. 4, timely pruning. It is necessary to promptly knock out the lower empty branches and old leaves, touch the buds, pick the side of the heart, promote the ventilation of the cotton fields, reduce the shade of the fields, reduce the humidity in the fields, and prevent the lower moldiness of the cotton trees. 5, pay close attention to pest control. The main prevention and control of "three insects", namely, spider mites, four generations of cotton bollworm and Spodoptera litura. Red spiders are easy to occur in autumn when drought occurs. The control standard is 20% per mu or 100 ticks, and 15% of net sprays are used to prevent and control the spray. The control period of the fourth-generation H. armigera was from August 5 to 20, and the prevention and control standard was 100 for five insects or one hundred for 30 eggs. To meet the prevention and control standards, no matter whether it is insect-resistant cotton or non-insect-resistant cotton, prevention and control methods should be carried out: during the moth dynasty, adult insects are trapped with frequency-vibration insecticidal lamps to reduce the amount of eggs laid off in the field; in combination with pruning, topping, and eradication Buds and other agricultural measures, artificial eggs, insect traps, reduce the number of eggs in the field. With 55% fast green Yan 30-50ml / mu or 2.5% of the deltamethrin EC 20-40ml / mu watered 50 kg spray, medication 2-3 times, can be treated both red spider and Spodoptera litura. 6, science picking cotton. It is necessary to timely pick up the threatened rotten peaches, not to pick up the dew drops, not to pick up the smiley peaches, and not to collect flowers with shells. It is necessary to collect, dispense, distribute, distribute, and sell products according to the variety and quality of the cotton, and at the same time insist on using bags to affix flowers and cloth ropes to prevent the incorporation of foreign fibers and impurities such as hair and chemical fibers to increase cotton grades. Reduce "three wires."
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