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棉花是新疆主要经济作物,每年种植面积四百万亩左右。因为棉田各种病虫为害对棉花产量有一定影响,历年都进行较大面积的化学防治。为经济合理的使用化学农药,减少施用农药的次数和施药量,充分发挥自然界天敌对棉花害虫的控制作用。各地植保部门从1980年以来开展了对当地主要作物的主要害虫的主要天敌调查。并对其消长情况作了系统观察。有的地、州、县在调查的基础上还对一部分害虫和天敌初步提出了它们的比例关系,为进一步研究防治指标和开展大田天敌保护利用提供了可靠依据。现结合南、北疆棉区病、虫发生及主要天敌种群消长情况提出如下防治措施。供植保人员在生产中参考。
Cotton is a major cash crop in Xinjiang, with an annual planting area of about 4 million mu. Because a variety of pests and diseases of cotton have a certain impact on cotton production, over the years are carried out a larger area of chemical control. In order to economically and reasonably use chemical pesticides, reduce the number of pesticides applied and the amount of pesticide application, and give full play to natural enemies of cotton in natural insect control. Since 1980, plant protection departments throughout the country have conducted surveys on major natural enemies of major pests of the major local crops. And made a systematic observation on its growth and decline. In some cases, counties and counties initially proposed their proportion relationship with some pests and natural enemies on the basis of investigation, which provided a reliable basis for further research on prevention and control indicators and the protection and utilization of natural enemies of fields. Now combined with southern, northern cotton disease, insect occurrence and population decline of major natural enemies put forward the following prevention and control measures. Plant protection staff in the production of reference.