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一、为害情况 棕金龟(虫甲)(Holotrichia sauteri Moser)、朝鲜金龟(虫甲)(Holotrichia diomphalia Bates)、无翘黑金龟(虫甲)(Trema-todes tencbriodes Pall.),是山西晋东南杂粮区主要害虫之一,玉米、谷子、高粱、小麦、马铃薯、甘薯、豆类、棉花、甜菜、苗木等均受其为害。每年播种后,幼虫为害种子、幼芽、幼苗、根茎;有时玉米生长到2尺高还被它咬死。据在长治盆地调查,结果玉米被害率达10—30％,小麦10—20％,高粱5—24％,大豆10—24％。虫口密度每平方米有4—6个,最多者有41.3个。往往一株玉米根下能挖出1—5个蛴螬。为了找出有效
First, the damage situation Holotrichia sauteri Moser, North Korea Golden tortoise (Holotrichia diomphalia Bates), non-Alice black beetle (Trema-todes tencbriodes Pall.), Shanxi southeast of miscellaneous grains One of the main pests in the district, corn, millet, sorghum, wheat, potatoes, sweet potatoes, beans, cotton, sugar beet, seedlings are all victims. After sowing each year, larvae damage seeds, young shoots, seedlings, and rhizomes; sometimes maize grows to 2 feet high and is bitten by it. According to a survey conducted in Changzhi Basin, the rate of corn damage was 10-30%, wheat 10-20%, sorghum 5-24% and soybean 10-24%. Insect population density 4-6 per square meter, up to 41.3. Often under a corn root can dig 1-5 蛴 螬. In order to find effective