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棉花产量的20～40％取决于病虫害发生之轻重,拟定正确的病虫防治对策,科学施用农药是提高防治水平、增加植棉效益的关键。以皮棉产量为目标,“抓两头,控中间”即前期防病化除保棉苗,中间按自然规律控制用药,后期重点施药保棉铃的防治对策,并针对性的选择农药品种,运用先进的施药器械和方法科学用药,能减少投入,提高防效,延缓抗药性产生。
20-40% of cotton production depends on the severity of pests and diseases, formulate the correct pest control measures, and scientific application of pesticides is to improve the control level and increase the benefits of cotton planting. To lint yield as the goal, “catch two, control the middle,” that is, the early anti-disease in addition to cotton bolting, the middle control according to the laws of natural law, the latter part of the key pesticide boll control measures and targeted selection of pesticide varieties, the use of advanced The application of drugs and methods of scientific medication, can reduce investment, improve control efficiency, delay the emergence of drug resistance.