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谷子在出苗期和出茁后,毁苗的害虫,可分为两类。一类是咬毁正在出土的地内苗茎(咬白)和出土不久的苗尖(咬青)。另一类是谷子生出三、四个叶以后,陆续被几种害虫咬断基部,或咬空茎髓,造成枯心使谷苗死亡。这些蛀茎虫类,有的能在谷子拔节后及穗期继续蛀茎,使谷苗陆续死亡或结实不满及大量倒伏。咬苗的害虫,在同一个地区,常常几种虫子混同发生。其中咬白的害虫所造成的缺苗征
Millet in the emergence and emergence, the destruction of seedlings of pests can be divided into two categories. One is to bite the seedling stems that are being excavated (bites white) and the short tips (biting green) unearthed. The other is the millet gave birth to three or four leaves, one after another by several pests bite off the base, or bite empty stems, resulting in dead heart Gu Miao death. These borers and insects, and some can continue after millet jointing and ear stem borers, so that seedlings gradually died or stunted dissatisfaction with a large number of lodging. Biting seedling pests, in the same area, often several kinds of bugs occurred. Which bitten white pests caused by the lack of signs