利用线虫防治农作物害虫,国外苏联、日本、美国、印度等早有研究;但国内研究的甚少。据近年调查结果,我省岳阳、常德、桂东、长沙等许多县都发现有大量飞虱被线虫寄生的现象,且寄生率最高达93%。为了利用线虫防治水稻害虫,笔者自1977年以来,对多索线虫(Agamermis　sp.Mermithid The use of nematodes to control crop pests, foreign countries such as the Soviet Union, Japan, the United States, India and other early studies; but little domestic research. According to the findings of recent years, many counties in Yueyang, Changde, Guidong and Changsha in our province found that a large number of planthoppers were parasitized by nematodes and the parasitism rate was as high as 93%. In order to use the nematode to control rice pests, the author since 1977, the Dorset worm (Agamermis sp. Mermithid