田间害虫一直是人类的大敌。据资料,全世界每年因害虫危害而损失的粮食约占总产最的30%以上。从人类开始种植农作物时起,就与各种害虫开始了一场永无休止的斗争。千百年来,人类所使用的机器不断更新,从最原始的用手捕捉发展到今天的各种各样的杀虫剂和复合农药,使人类从害虫口中夺回了的10%左右的粮食。可是,由于大量使用农药,促使害虫产生了抗药性。与此同时,土地,河流、空气等也受到了严重污染。害虫对农药抗性的增加,又促使农药的用量不断增加,如此循环,其危 Field pests have always been the enemy of mankind. According to statistics, the annual loss of food caused by pests in the world accounts for about 30% of the total output. Starting from the time people started planting crops, they started a never-ending struggle against various pests. For thousands of years, the machinery used by mankind has been constantly updated, capturing the 10% or so of the total amount of food that mankind has taken back from insects and insects, from the most primitive hand-held capture to various pesticides and compound pesticides that have developed to this day. However, due to the heavy use of pesticides, pests have become resistant. At the same time, land, rivers, air and the like have also been seriously polluted. Pest resistance to pesticides increased, but also to promote the use of pesticides continue to increase, so the cycle, the risk