所谓地下害虫是指各虫期均长期生活在土中,至少为害虫期生活在土中,为害农作物的地下部分如幼根、嫩茎等.所以我们叫它地下害虫.地下害虫主要有蝼蛄、蛴螬和金针虫.蝼蛄:有华北蝼蛄和南方蝼蛄两种;金针虫有沟金针虫、细胸金针虫和褐纹金针虫三种;而蛴螬种类较多,有华北大黑金龟子、东北大黑金龟子、暗黑金龟子、阔胸金龟子等十多种.由于地下害虫具有生活在土中,为害作物地下部的特点,因此,它的为害特征,发生规律、调查方法和防治方法等与地上害虫相比是完全不同的.地下害虫的发生和为害受土 The so-called underground pests refers to the long-term life in the soil of each period, at least for the period of pest life in the soil, damage to the underground parts of crops such as young roots, stems and so we call it underground pests underground pests mainly 蝼 蛄,蛴 螬 and golden needle insects. 蝼 蛄: There are two kinds of 蝼 蛄 and southern 蝼;; needleworm gutted wireworm, thin-pinged insects and brown needle-shaped insects three; and more types of 蛴 有, there are large black beetles in North China, Scarab, dark-headed beetle, broad-billed beetle, etc. As the underground pests have the characteristics of underground parts that harm the crops, the characteristics of pests, the law of occurrence, the methods of investigation, and the methods of prevention and treatment are compared with the ground pests Is completely different. The occurrence of underground pests and damage affected by soil