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细胸金针虫(Agriotes fuscicollis Miwa)是甘肃的主要地下害虫之一,全省均有分布,在河西地区占绝对优势。经6年来田间调查和室内饲养得知,该虫有世代上的多态现象(Polymorphism),在武威地区3年1代,亦有2年或4—5年1代者。主要以幼虫越冬,幼虫期平均958.5天,蛹期平均15天,当代成虫寿命30—68天,少数越冬成虫270天左右,卵期平均14天。该虫适生于壤质偏碱的土中,以土下10厘米土温7—22℃和土壤含水量14—18％为最适宜。幼虫春季为害作物幼苗猖獗,秋季为害根茎类作物亦重。麦田不施未腐熟的有机肥料、麦收后浅耕灭茬曝晒和秋季休闲等均有一定的防治效果。
Agriotes fuscicollis Miwa is one of the major underground pests in Gansu Province. It is distributed throughout the province and occupies an absolute predominance in the Hexi area. After 6 years of field surveys and indoor rearing, the insect has a polymorphism (Polymorphism) in the generation, 3 years in the Wuwei area 1 generation, there are 2 years or 4 - 5 years of 1 generation. The main larvae overwinter, the larvae an average of 958.5 days, pupal an average of 15 days, adult life expectancy 30-68 days, a small number of overwintering adult 270 days, the average egg 14 days. The pest is suitable for soil loamy alkaline soil to 10 cm soil temperature of 7-22 ℃ and soil moisture content of 14-18% is the most appropriate. Spring larvae crop damage rampant seedlings, autumn crop damage is also heavy roots. No maturity in the wheat field of organic fertilizer, wheat harvest after shallow tillage stubble exposure and leisure and so have a certain degree of control.