通过抗病鉴定试验选取抗病香蕉品种海贡和感病香蕉品种威廉斯B6,并用2个香蕉品种的根渗出物分别处理南方根结线虫的卵,观察根渗出物对线虫卵孵化及幼虫致病力的影响。结果表明:接虫后抗病香蕉品种海贡根渗出物处理的卵总孵化率为63.26%,平均病情指数为22.13;感病香蕉品种威廉斯B6的总孵化率为80.29%,平均病情指数为53.35,2个香蕉品种的孵化率差异极显著。 Disease resistant banana variety Haigong and susceptible banana variety Williams B6 were selected by disease resistance test. The eggs of southern root-knot nematode were treated with the root exudates of two banana cultivars, and the root exudates were observed to hatch the nematode eggs And larval pathogenicity. The results showed that the total hatching rate of Haigeng root exudates was 63.26% and the average disease index was 22.13. The total hatching rate of susceptible banana variety Williams B6 was 80.29%, and the average disease index For 53.35, the hatching rate of two banana varieties is very significant.