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室内应用斯氏线虫3个种的5个品系,对越冬沟眶象幼虫进行侵染力比较,结果表明,施线虫后8天,芜菁夜蛾线虫A24品系和Beijing品系,可使在土壤内的幼虫死亡率分别达100％和90％,14天后Beijing品系的致死率亦达100％,其它3个品系均达90％左右;在土壤含水量为10～20％范围内,幼虫死亡率随土壤含水量的增加而递增,施线虫后5天,含水量20％的处理,幼虫死亡率达70％,而10～15％含水量中,死亡率为45～50％;线虫对沟眶象成虫的致死率很低仅15％。对为害臭椿树的沟眶象幼虫,用A24和Beijing品系进行防治,效果分别为77.3％和70.0％。
The indoor application of three kinds of three kinds of squirrel nematodes, five strains of overwintering ditch orbital elephant larvae infectivity comparison, the results showed that eight days after the nematodes, verrucous nematode A24 strains and Beijing strains, can make in the soil Larvae mortality of 100% and 90% respectively. After 14 days, the lethality rate of Beijing strains reached 100% and the other three strains all reached about 90%. In the range of 10 ~ 20% soil moisture, the larval mortality Soil water content increased with increasing, 5 days after nematode, water content of 20% of the treatment, larvae mortality rate of 70%, and 10 ~ 15% water content, the mortality rate of 45 to 50%; nematodes on the orbit Adults have a very low lethal rate of only 15%. A24 and Beijing strains were used to control the orbital larvae of Ailanthus altissima, with effects of 77.3% and 70.0%, respectively.