筛选农药确保防治效果为了确保对棉铃虫的防治效果，降低农药投入成本，提高棉农种棉的经济效益，１９９４年我们对市内市场上出售的农药进行了等价筛选试验。试验采用浸虫法（三代棉铃虫三龄幼虫），供试农药药剂品种有：甲基１６０５千辛硫磷（１∶１）６００倍液、５０... Screening of pesticides to ensure the effectiveness of control In order to ensure the prevention and control of cotton bollworm, reduce pesticide input costs and improve cotton farmers economic benefits, in 1994 we sold pesticides in the market for the equivalent screening test. Test using the method of soaking insects (third-generation cotton bollworm third-instar larvae), the test pesticide agent varieties are: methyl 1605 phoxim (1: 1) 600 times, 50 ...