小猿叶虫(Phaedon brassicae Baly)是本市近年春秋季突发的重要蔬菜害虫,由于人们对此虫尚较陌生,以致防治选药常不对口(目前大多使用似效佳而实效差的杀灭菊酯等),造成经济上巨大损失。为此,笔者于1993年测试了部分农药,从中筛选到40%乐果乳剂1000倍液对小猿叶虫的幼虫与成虫防效均较理想。 Phaedon brassicae Baly is one of the most important vegetable pests in the spring and autumn of this Municipality. As people are still rather unfamiliar with the insects, the prevention and control of drug selection is often wrong (most of them are currently used with good effects and poor efficacy Chrysanthemum, etc.), resulting in huge economic losses. To this end, I tested some pesticides in 1993, from which screening of 40% dimethoate emulsion 1000 times on the larvae and adults of the small-mulberry leaf pest control effect is ideal.