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一大豆造桥虫大豆造桥虫是一种暴发性的害虫,1958年山东省普遍发生,为害相当严重,很多豆子叶肉被吃光只剩叶脉,减产很大。为害大豆的造桥虫山东省已发现的有五种。其中主要有二种;一种是成虫小灰黑色的蛾子,体长3分,翅长7分左右,幼虫细长体绿色,受惊时会蹦跳;另一种成虫较大,前翅中间有一对银白色的亮纹,学名银纹夜蛾。幼虫前半截较细,后半截粗
One bridge of soybean bridge insect soybean bridge bridge worm is an outbreak of pests, common in Shandong Province in 1958, the damage is quite serious, a lot of bean leaf melanogaster was eaten leaves only veins, large-scale production. Bridge insect pest damage in Shandong Province has been found in five. There are two main types; one is a small gray-black adult moth, body length 3 minutes, wing length 7 minutes or so, the larvae slender body will be bouncing when frightened; another adult larger, forelimb in the middle of a pair of silver Bright white lines, scientific name Spodoptera. The first half of the larvae finer, the latter half thick