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近几年来,山东省农田鼠害发生严重,表现在种类多、分布广、密度大。受害作物以玉米、大豆最重,一般减产10—30%。据初步统计,全省发生鼠害面积2,000多万亩。仅平度县的张戈庄乡,鼠害发生面积就有5万多亩,使粮油减产1,1250多公斤。一、严重发生的原因气候条件和农田作物布局的改变,直接和间接地影响了鼠类的生存、繁殖和死亡。过去在我国华北地区有“大暑小暑,灌死黄鼠”、“洪淤一年地,三年没
In recent years, Shandong Province, rodents in farmland serious occurrence, manifested in many species, widely distributed, large density. Damaged crops to corn, soybeans heaviest, the general cut 10-30%. According to preliminary statistics, more than 2,000 mu of rodent pests occurred in the province. Only Zhang Gezhuang Township, Pingdu County, rodent victims have more than 50,000 acres, so that more than 1,1250 kilograms of grain and oil production. First, the serious causes of Climatic conditions and cropland changes in the layout of crops, directly and indirectly affected the survival, reproduction and death of rats. In the past in North China, there are “summer heat, shrimp death”, "Hong silt year, three years