我国农作物生物灾害种类多、发生范围广、为害程度重 ,长期以来制约着农产品产量和品质的提高 ,如不加以防治 ,每年可造成农作物产量损失 1 5%～ 3 0 %,局部地区可达 50 %以上。因此 ,抓好有害生物的防治工作 ,对保护农业生产至关重要。纵观我国 50ａ来有害生物防治的历史 ,既 There are many kinds of crop biological disasters in our country, with a wide range of occurrence and serious harm. For a long time, the yield and quality of agricultural products have been restricted. Without prevention and control, annual crop losses of 15% -300% and 50 %the above. Therefore, doing a good job in the prevention and control of pests is crucial to the protection of agricultural production. Looking at the past 50 years of pest control in our country, both