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粘虫是我省粮食生产上的一大害虫,在本省中、东南部地区常以第三代造成严重为害。这代粘虫发生期一般在七月底至八月初,与二代玉米螟发生期吻合。此时,如选用残效期较长的颗粒剂防治玉米螟可收到兼治三代粘虫的效果,克服了因作物植株高大不易进行化学防治三代粘虫的困难,事半功倍,在生产上很有应用前途。因此,我们进行了几种颗粒剂对粘虫的触杀效果及残效期试验,为在玉米心叶期防治二代玉米螟兼治三代粘虫提供依据。
Mythimna separata is a major pest of food production in our province. In the province, the third generation in the southeastern region often causes serious damage. The generation of this generation of armyworms usually occurs in late July to early August, coincides with the second generation of corn borer. At this point, such as the use of longer residual particles of corn borer prevention and control can be treated by three generations of armyworm effect, to overcome the crop plant tall and difficult to chemical control of three generations of armyworm difficulty, with less, in the production of a promising future . Therefore, we carried out several kinds of granules on the armyworm contact and residual effect test, in order to prevent the second generation of corn borer leaves during the second generation of corn borer to provide the basis for three generations of armyworms.