毒沙治虫就是按一定比例将杀虫剂掺到沙子里,充分搅拌,使沙子全部带毒,用以防治农田害虫。一、毒沙防虫效果 1963年我们在兰州用1份6％666粉和200份细沙掺混,每穴玉米施用1市两左右毒沙,可有效地杀死1—6龄小地老虎和黄地老虎幼虫。后来进一步证实,农作物苗期在作物基部施用毒沙,还可以有效地防治拟地甲成虫、根蛆成虫、多种象鼻虫、金龟子、叩头甲、黄条跳 Poisonous sand pest is a certain percentage of insecticide mixed into the sand, full mixing, so that the sand all poisoned, to control farmland pests. First, toxic sand pest control effect In 1963, we use 1 6% 666 powder and 200 parts of fine sand mixed in Lanzhou, applying corn per acre around 1 or 2 poisonous sand, which can effectively kill 1-6-year-old Tigers and Yellow tiger larvae. Later, it was further confirmed that the application of toxic sands at the base of crops at the seedling stage of crops could also effectively prevent and control the adults of Dillidae, the adults of maggots, the weevil, the beetles, the kapok,