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甘肃省玉米播种面积400多万亩,居粮食作物的第二位。在玉米栽培过程中,常遭受多种病虫的危害,特别是金针虫、地老虎等地下害虫的危害,造成玉米缺苗断垄,致使玉米减产。据调查,兰州郊区平均每平方米有地下害虫10.61头,危害严重时单株玉米仅细胸金针虫多达6～7头,初步测算全省每年损失玉米约0.5亿公斤左右。为了防治地下害虫危害,1991年进行了玉米种衣剂(甲基1065与呋喃丹等混合制剂)拌玉米种防治地
The planting area of corn in Gansu Province is more than 4 million mu, ranking the second place for food crops. In the process of corn cultivation, often suffer from a variety of pests and diseases hazards, especially insects, ground tigers and other underground pests, causing maize missing Mian ridge, resulting in maize yield. According to the survey, there are 10.61 underground pests per square meter on the outskirts of Lanzhou. When the serious damage is done, only 6 to 7 fine-pointed pinworms per plant are found, accounting for an estimated loss of about 50 million kilograms of corn annually in the province. In order to prevent the harm of underground pests, corn seed dressing (methyl 1065 and carbofuran and other mixed preparations) was used to control corn in 1991