过去普遍使用六六六、DDT 等有机氯杀虫剂防治作物害虫,这既伤害了昆虫天敌,又污染环境。因此,我们就稻棉害虫的防治药剂进行了药效试验,并考查其对稻田蜘蛛的影响,以期筛选出高效、易降解、能代替有机氯的杀虫剂,供试用推广。参试药剂有重庆农药厂提供的敌胺粉(3%敌百虫+1.5%甲胺磷)、敌甲粉(3% In the past, the use of hexachlorodichlorohydrins, DDT and other organochlorine pesticides to prevent and control crop pests was widespread. This not only harmed insect natural enemies but also polluted the environment. Therefore, we carried out efficacy tests on the control agents for rice and cotton pests and examined their effects on spiders in paddy fields, with a view to screening out pesticides that are highly efficient and easily degradable and can replace organic chlorine for trial promotion. The pesticides tested include pesticide powder (3% trichlorfon + 1.5% methamidophos) supplied by Chongqing Pesticide Factory, 3%