近几年来,本地区怀山药受蛴螬为害较重。据调查,重点地块虫口密度每平方米在32头以上,最多处达63头,使怀山药产量和质量受到不同程度的影响。笔者3年来,选用辛硫磷、敌敌畏、呋喃丹3种药剂防治蛴螬,其中分层定量施用呋喃丹的办法,连续两年获得了较显著的防治效果,现介绍如下。 In recent years, pregnant women in this area have been severely crippled. According to the survey, the density of key land masses per square meter in more than 32, at most up to 63, so that yam yam production and quality are subject to varying degrees. The author 3 years, the selection of phoxim, dichlorvos, carbofuran three kinds of agents to prevent catfighting, which quantitatively administered carbofuran stratification method, for two consecutive years to obtain a more significant control effect, are presented below.