应用苹果蠹蛾线虫防治荔枝拟木蠹蛾的研究

荔枝拟木蠹蛾(Arbela dea Swinhoe)是荔枝、龙眼等热带、亚热带果树及林木的常见害虫,其幼虫蛀茎或枝条成坑道,夜出啃食树的韧皮部为害。1988—1989年,作者应用苹果蠹蛾线虫(Steinernema carpocapsae A24)1—8×10~3条/ml水悬浮液,注射进荔枝拟木蠹蛾的坑道或喷雾至隧道,防治面积1500亩(100ha),防效达89%—100%,有效地压低了荔枝拟木蠹蛾在这地区的为害,是一种经济的、有效的生物防治手段。

THE APPLICATION OF CODLING MOTH NEMATODE AGAINST THE LITCHI STEMBORER

In 1988-1989,100 ha of lichi,longan trees were treated with cod-ling moth nematode Steinernema carpocapsae A24 for controlling the lichi stem porer Arbela dea Swinhe,a common insect pest of tropical and subtropical fruit and forest trees.The larvae bore into the trunks and branches forming a lot of tunnels and also damaging the basts at night.By injecting the nematode suspension((1-8)×10³/ml) into the tunnels or spraying outside.89%-100% of the stemborer larvae were killed by this nematode,the damage of this insect pest has been reduced in the treated area,indicated that it is an economical and effective approach of biological control.