昆虫病原线虫对大豆地下害虫东北大黑鳃金龟幼虫的致病力研究

INFECTIVITY OF ENTOMOPATHOGENIC NEMATODE TO SOYBEAN SOIL PEST Holotrichia Oblita FALDERMANN

蛴螬是一种对大豆为害严重的地下害虫。本试验应用昆虫病原线虫(Entomopathogenic nematode,EPN)斯氏线虫Steinernema carpocapsae的4个品系和异小杆线虫Heterorhabditis bacteriophora的3个品系,分别以滤纸和沙子为介质对东北大黑鳃金龟幼虫进行致病力测定,筛选出异小杆线虫Heterorhabditis bacteriophora-1品系为防治东北大黑鳃金龟幼虫的较理想线虫品系,以沙子为介质时,校正寄生死亡率达95.83%。

Holotrichia oblita Faldermann is a kind of soil insect pest that can cause serious damage. The four strains of Steinernema carpocapsae and three strains of Heterorhabditis bacteriophora were used assay on Entomopathogenic nematode to Holotrichia oblita Faldermann, with filter paper and sand as medium. The result showed Heterorhabditis bacteriophora --1 was a efficiency strain to control Holotrichia oblita Faldermann. When used sand as medium, the correct dead rate of Holotrichia oblita Faldermann was 95.83 %.