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烟草是延边地区主要经济作物之一,栽培面积10.3万亩,其中烤烟9.8万亩,占全省烤烟面积的80％。在春季烟苗移栽时,常遭受切根虫的危害,致死株率一般在15～30％,最严重时造成毁种。 一、种类 经1979～1981年调查,中国科学院动物研究所陈一心鉴定,初步查明了有以下种类: 在烟草地造成危害的有:小地老虎[Agrotis ypsilon(Rott.)]、黄地老虎[A.segetum(Schiff.)]、
Tobacco is one of the main cash crops in Yanbian. The cultivated area is 103,000 mu, of which 98,000 mu are flue-cured tobacco, accounting for 80% of the total area of flue-cured tobacco in the province. During the transplanting of tobacco seedlings in spring, they are often endangered by root-knot worms. The rate of lethal strains is generally 15-30%, causing the most serious species to destroy. First, the type of investigation from 1979 to 1981, the Institute of Zoology, Chinese Academy of Sciences identified the initial identified the following species: the damage caused in the tobacco are: small tiger [Agrotis ypsilon (Rott.)], Yellow tiger [A.segetum (Schiff.)],