调查结果表明,用常用的喷雾方法在苹果园喷施昆虫病原线虫 S.carpocapsae Agrio-tos 品系防治桃小食心虫,喷雾不够均匀,在一定程度上影响了线虫的寄生率。线虫在苹果园的土壤中存活期达一个月以上,并具有一定的感染力。线虫施到土中后,用大蜡螟诱测到的线虫数量及感染力随时间的增加部呈负指数下降,变化曲线分别为 Y=exp(1.72-0.19X),r=-0.989和 Y=exp(3.45-0.13X),r=0.989。 The results showed that spraying Spraysophagous nematode S.carpocapsae Agrio-tos against pests in apple orchard with common spraying method prevented the peach moth to spray evenly, which affected the parasitic rate of nematodes to a certain extent. Nematodes in the soil in the apple orchard survival of more than a month, and has a certain appeal. After the nematodes were applied to the soil, the numbers and infectivity of the nematodes induced by the Wax moth showed a negative exponential decline over time, the curves of which were Y = exp (1.72-0.19X), r = -0.989 and Y = exp (3.45-0.13X), r = 0.989.