经田间与室内观察,初步查明两索线虫Amphimermis sp.是寄生稻飞虱的较好天敌。褐稻虱被两索线虫寄生后双晚稻田第五、六代发生量可减少34.5±5.72％。现将观察结果整理如下。 一、两索线虫在稻田土壤内的分布 两索线虫除寄生期幼虫在寄主稻飞虱体内 After field and indoor observation, initially identified two cable nematode Amphimermis sp. Is a better natural enemy of parasitized planthoppers. After the brown planthopper parasitized by the two cableworms, the occurrences of the fifth and the sixth generation of double late rice fields could be reduced by 34.5 ± 5.72%. The observations are summarized below. One or two nematodes in paddy soil distribution Two cable nematodes except parasitic larvae in the host planthopper