榆林沙区飞播林地主要钻蛀性害虫防治技术研究

On Comprehensive Prevention and Control Technology of Woodborer in Aerial Seeding Woodlands of Yulin

在榆林沙区飞播林地内,应用物理技术(太阳能杀虫灯)、营林技术、化学防治、物理技术+化学防治4种防治措施进行防治试验。结果表明:物理技术应结合应用40%氧乐果100ml+77.5%敌敌畏100ml兑水10L喷雾防治效果最好,林地内的钻蛀性害虫的平均防治效果达90%以上,适合于小面积、便于管理的飞播林;应用营林技术,平茬防治效果柠条林达到了100%,杨柴纯林为95%,沙蒿纯林为81.8%,混交林为89%,适合于大面积的飞播林;应用化学防治,25g·L-1高效氯氟氰菊酯对柠条种实害虫的校正防治效果最好,可以达到91.71%。

In Yulin sandy area with aerial seeding,4 kinds of control measures were adopted respectively to compare the effect:physics technology(solar insecticide lamp),forest management technology,chemical control,and physics technology plus chemical control.The results showed that physical technology plus 40%omethoate 100 ml plus 77.5%DDVP 100ml watered 10 L had best effect the control effect is best.Control of wood-boring insects reached over 90%on average.The measure is applicable to small-scale management with aerial seeding.Stumping is suitable for controlling wood-boring pests,with 100%effective for Caragana korshinskii plantation,95%effective for Hedysarum laeve Maxim plantation,81.8%effective for Artemisia desterorum Spreng plantation and 88.9%effective for mixed forest.The measure is applicable to large scale plantation by aerial seeding.Chemical control with 25 g·L-1 lambda-cyhalothrin is effective to control seed insects,with effect of control 91.71%.