农药的使用是一个老话题,但一直没有解决。农药的使用不仅是一个简单的选择农药和药量药物学问题,而是涉及农药制剂、农药行为、生物行为、施药机具、作物生态、气象因素等多方面、多学科的一项系统工程,一门“农药应用工艺学”。农药使用是否正确,关系到防治效果的优劣,作物产量的高低,人畜安全程度的好坏,农田生态环境的良莠,农产品残留的多少。而目前农民在使用农药的问题上,普遍存在着一些急待更新和矫正的陈旧观念和传统误区。一是病虫发了就打药,把防治病虫寄托在农药这张“王牌”上;二是只要勤打药, The use of pesticides is an old topic, but it has not been solved. The use of pesticides is not only a simple choice of pesticides and drug pharmacological problems, but involves a multi-disciplinary system of pesticides, pesticide behavior, biological behavior, pesticide application, crop ecology, meteorological factors, etc., A “pesticide application technology ”. Pesticide use is correct, relates to the pros and cons of the control effect, the level of crop yield, the quality of human and animal safety, the good and bad farmland ecological environment, the amount of agricultural residues. At present, peasants have some obsolete ideas and traditional erroneous areas that urgently need to be updated and rectified when they use pesticides. First, the pest and disease were sent to fight drugs, pest control pest control in this “ace”; Second, as long as hard-working drugs,