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病虫害防治一直是农业生产中的关键环节,也是有关部门和科研人员的研究重点。近年来,病虫害防治中的一些问题曰趋暴露,有数据显示,在加强防治情况下,我国每年仍损失皮棉1000多万担、粮食1500万吨以上。棉铃虫危害造成每年棉花产量损失达15%左右,严重发生年份可达30%以上。一些重大病虫致害性变异频率、农作物品种抗性曰渐丧失、病虫抗药性增强、化学农药用量增加、环境污染严重等问题越来越引起人们的关注,对病虫害抗药性的研究和监测也逐渐受到重视。
Pest and disease control has always been a key link in agricultural production and a research focus of relevant departments and researchers. In recent years, some problems in the prevention and control of pests and diseases have become increasingly exposed. According to statistics, under the circumstances of intensifying prevention and control, China still loses more than 10 million lint of lint and more than 15 million tons of grain every year. The damage caused by cotton bollworm causes an annual loss of about 15% of cotton production, and a serious occurrence of up to 30% of the year. The frequency of lethal mutation of some major pests and diseases, the gradual loss of resistance of crop varieties, the increase of pest and disease resistance, the increase of the amount of chemical pesticides, the serious environmental pollution and other issues have drawn more and more people’s attention and the research and monitoring of pest and disease resistance Also gradually receive the attention.