在我国南方早中稻地区,用666防治一代二化螟的效果很好。但用于防治二代二化螟的效果往往不够稳定。为此,我们在中籼稻田进行了以下试验: 在二代螟卵孵化基本结束、田间有各龄幼虫时,用666处理稻田(用6％666粉剂),试验分不同用药量及不同施药方法两组处理,共11个小区,小区面积0.3亩,施药后3天检查田间各龄幼虫死亡率,结果如表1 Early in the southern region of China, with 666 prevention and control of Chilo suppressalis done well. However, the effect of preventing and controlling second generation rice stem borer is often not stable enough. For this reason, we conducted the following experiments on the mid-indica rice fields: When the hatchery eggs of the second generation were almost completely hatched and the larvae of each instar were in the field, 666 treated paddy fields were treated with 6% 666 powder, Methods Two groups of treatment, a total of 11 plots, plot area of ​​0.3 acres, 3 days after application of pesticides to check the age of the larvae mortality of the field, the results shown in Table 1