大豆食心虫发蛾期长,一般药剂的残效期短,如果防治面积过小,施药后从未防治地迁来之食心虫仍继续为害。因此田间药效测定并不足以表明真实效果,特别是难以麦明防治后的经济效益。我们以6％666粉剂、6％666加5％DDT_1:1混合粉剂、E605液剂、2.5％敌百虫粉剂等进行了不同施药时期和不同剂量的大面积防治试验。 现将所得结果整理于下供参考。 Soybean bore worms hair moth period, the general agent of the short duration of short, if the control area is too small, after the pesticides have never been moved to the control of moth worms still continue to harm. Therefore, the field efficacy test is not enough to show the real effect, especially after the prevention and control of the economic benefits of wheat. We used 6% 666 powder, 6% 666 plus 5% DDT_1: 1 mixed powder, E605 liquid, 2.5% trichlorfon powder for different application periods and different doses of large-scale control trials. The results will now be organized for reference.