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用南方根结线虫卵作接种试验，证明从根结线虫成虫及卵上分离７６个菌株中大部分菌株有寄生能力，种间及株间寄生率差异明显，表明这种方法是检验寄生真菌寄生能力的一种良好方法。通过测定，７６个菌株中有１０个菌株对南方根结线虫卵的寄生率超过５０％，种间及菌株间对卵的寄生能力存在很大差异；Ｐａｅｃｉｌｏｍｙｃｅｓｌｉｌａｃｉｎｕｓ，Ｖｅｒｔｉｃｉｌｉｕｍｃｈｌａｍｙｄｏｓｐｏｒｉｕｍ及Ｖ．ｌａｍｅｌｉｃｏｌａ对Ｍｅｌｏｉｄｏｇｙｎｅｉｎｃｏｇｎｉｔａ，Ｍ．ａｒｅｎａｒｉａ和Ｍ．ｊａｖａｎｉｃａ卵的寄生能力进行比较，在３种线虫之间没有明显差异，说明这３种真菌对这３种根结线虫有进行防治的可能性。首次研究了寄生真菌培养滤液对根结线虫的作用，发现大多数寄生真菌的代谢产物对幼虫有毒害作用。２８个菌株中２４个的培养滤液对南方根结线虫幼虫有很高的毒性作用，在４ｈ内５６％～１００％幼虫不活动；Ｐ．ｌｉｌａｃｉｎｕｓ菌株５４培养滤液对幼虫作用的时间不同，效果也有很大差异，作用４ｈ，幼虫不活动率为１００％，作用４８ｈ，幼虫死亡率为１００％。在盆栽试验中，证明某些真菌对无菌土栽培的番茄上南方根结线虫有明显的防治效果。其中Ｐ．ｌｉｌａｃｉｎｕｓ?
Inoculation experiments with Southern root-knot nematode eggs demonstrated that most of the 76 strains isolated from adult and egg of root-knot nematodes had parasitism, with significant differences among species and strains, indicating that this method is to test parasitic fungi A good way to parasitize. According to the results, 10 out of 76 strains of Paramyxomyces lilacinus, Verticiliumchlamydosporium and V. parasitica had more than 50% infestation on M. elegans eggs. lamelicola to Meloidogyneincognita, M. arenaria and M. javanica eggs parasitism ability comparison, there is no significant difference between the three kinds of nematodes, indicating that the three kinds of fungi of these three kinds of root knot nematode have the possibility of prevention and treatment. The effect of parasitic fungal culture filtrate on root-knot nematodes was first studied and it was found that the metabolites of most parasitic fungi have a toxic effect on larvae. Twenty-four of the 28 bacterial strains had a high toxic effect on root-knot nematode larvae, with 56% -100% of the larvae inactive within 4 h. Lilacinus strain 54 culture filtrate on the larvae of different time, the effect is also very different, the role of 4h, the larvae inactivation rate of 100%, 48h, the larval mortality was 100%. In the pot experiment, it was proved that some fungi had significant control effects on the root-knot nematodes on tomato cultivated in aseptic soil. Where P. lilacinus?