甘肃河西地区细胸金针虫为害及发生规律的研究

STUDY ON THE DAMAGE AND OCCURRENCE OF BARLY WIREWORM AGRIOTES FUSCICOLLIS MIWA IN HEXI CORRIDOR OF GANSU PROVINCE

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。

In 1981—1986,the damage and occurrence of barly wireworm Agriotes fuscicollis Miwa,adominant elaterid crop pest in Hexi Corridor——west of Yellow River in Gansu Province,werestudied in field and laboratory.It's life cycle,behavior,the optimum soil condition,and thedamage characteristics were reported,and the agronomic practices for controlling this insect werediscussed.