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1.滴滴涕和666滴滴涕原药为黄白色块状物,有微弱的果香味,不溶于水,不挥发,对昆虫有强烈的触杀作用,但胃毒作用小,无薰蒸和内吸作用。对鳞翅目幼虫如粘虫、棉铃虫、天幕毛虫等杀虫效果突出;对甲虫类、蝗虫、蝼蛄效果差。加工的剂型有5％粉剂、25％和50％可湿性粉剂、25％或35％乳油、40％乳粉等。5 ％粉剂可供喷粉,每亩用量3～4斤;25％和50％可湿性粉剂兑成150～200、300～400倍液进行喷雾,可防治棉花蕾铃期害虫以及粘虫、玉米螟、粟灰螟等。防治玉米螟还可用25％可湿性粉1斤,拌颗粒载体4斤;或50％可湿性粉1斤,拌颗粒载体9斤,制成颗粒剂使用。
1. DDT and 666 DDT The original drug is yellowish-white lumps, weak fruit flavor, insoluble in water, non-volatile, has a strong contact effect on insects, but the role of small stomach poisoning, no fumigation and systemic action. Lepidoptera larvae such as armyworms, cotton bollworm, celestial caterpillars and other insecticidal effect; on beetles, locusts, slugs poor results. Processing formulations are 5% powder, 25% and 50% WP, 25% or 35% EC, 40% milk powder and so on. 5% powder for dusting, the amount of 3 to 4 kg per acre; 25% and 50% of WP to 150 ~ 200,300 to 400 times the liquid spray, can prevent and control cotton bollworm pests and armyworms, corn Borer, corn borer and so on. Control corn borer also available 25% wettable powder 1 kg, mixed with 4 kg of granular carriers; or 50% wettable powder 1 kg, mixed with 9 kg of granular carriers, made of granules.