防治农作物病虫害是确保农业高产优质的重要措施之一。每年因病虫危害造成的损失是惊人的。有些病虫害一旦发生,常会产生防不胜防的被动局面,更给防治工作带来一定难度,做好农作物有害生物的防控,关乎农业生产的丰歉乃至农业发展的全局。因此,很多植保科学家提出,农作物的病虫防治是一 Prevention and control of crop pests and diseases is one of the important measures to ensure high yield and quality of agriculture. Every year, the damage caused by diseases and pests is staggering. Some pests and diseases in the event of occurrence, often produce a passive situation difficult to detect, but also bring some difficulty in prevention and control work, crop pests prevention and control, related to agricultural production, apology and even the overall situation of agricultural development. Therefore, many plant protection scientists have proposed that pest control of crops should be one