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矢尖蚧和糠片蚧是柑桔产区的主要害虫。近年来在我县为害蔓延很快,个别几乎毁园。多年来我场曾使用40％乐果和敌百虫等防治,效果逐渐减退。1980年8月,我们分别试用800倍液乐果、800倍液敌百虫(均加用洗衣粉200倍,下同)和600倍液马拉硫磷加煤油2两,防治矢尖蚧和糠片蚧,结果喷用乐果的未见其效,喷布敌百虫的杀虫率为57％,而喷布马拉硫磷加煤油的为90.6％。五天后,再分别试用乐果600倍、敌百虫800倍、马拉硫磷600倍加
Agkistrodon acutus and branch are the major pests in citrus producing areas. In recent years, the spread of damage in my county quickly, almost almost destroyed the park. Over the years I have used 40% dimethoate and trichlorfon control, the effect gradually diminished. August 1980, we were tested 800 times liquid dimethoate, 800 times the liquid trichlorfon (both plus 200 times the washing powder, the same below) and 600 times the liquid malathion plus kerosene 2 two, the control of Agrimony and Branches Kuwana, the results sprayed with dimethoate no effect, spraying trichlorfon insecticidal rate of 57%, while spraying malathion plus kerosene of 90.6%. Five days later, respectively, try dimethoate 600 times, trichlorfon 800 times, malathion 600 times