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岩黄毒蛾(Euproctis flavotriangula-ta Gaede)和近日污灯蛾(Spilaretia mel-li Dantel)是山西省吕梁地区核桃树两大食叶害虫,常相伴发生,大发生时,能吃光树叶,削弱树势,招致吉丁虫、天牛、小蠹等蛀干害虫侵害,严重影响核桃树的生长和产量,甚至造成树木死亡。据调查,1979年全区受害株率75％,其中死亡株率20％,1979年以前,全区核桃年产量一直徘徊在500万公斤左右,闻名中外的汾阳核桃年产量也超不过50万公斤。1979—1982年,我们先后在汾阳、孝义县设点,通过室内饲养
Euproctis flavotriangula-ta Gaede and Spilaretia mel-li Dantel are the two major leaf-eating pests of walnut trees in Luliang, Shanxi Province. They often accompany each other. In large occurrence, they can eat leaves and weaken the tree Potential, causing jibinus, beetles, beetles and other bore insects, seriously affecting the growth and yield of walnut trees, and even cause trees to die. According to the survey, in 1979 the affected area rate of 75%, of which 20% mortality rate, before 1979, the region’s annual output of walnut has been hovering around 5 million kg, Fenyang walnut famous annual output is also exceeding 500,000 kg. 1979-1982, we have set up Fenyang, Xiaoyi County, through indoor rearing