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嫩江地区谷子田玉米螟发生为害比较严重。我们根据生产需要,结合大面积防治实际情况,分析研究了历年谷田玉米螟产卵始期与高峰以及幼虫蛀茎与出现枯心苗之间的关系,得出连续两次见卵块后3—6天出现卵高峰;幼虫孵化后7天开始蛀茎;11天后出现枯心苗的
Nengjiang corn field corn borer damage more serious. According to the needs of production, combined with the actual situation of large-scale prevention and control, we analyzed the relationship between the spawning period and the peak of larvae ’s spawning stems and the emergence of dry seedlings in Gutian rice field in the past years. The results showed that 3-6 days Egg peak appears; larvae begin to moth the stem 7 days after hatching;