飞机喷洒白僵菌防治马尾松毛虫预防性效果研究  

Research on Effect of Preventive Controlling Dendrolimus puncyatus by Aerial Spraying Beauvefia bassiana

作　　者：邱萍 王敬 QIU Ping WANG Jing(Forest Major Project Center of Zigong City,Zigong 643000, Chin)

机构地区：[1]自贡市林业重点工程管理中心,四川自贡643000

出　　处：《四川林业科技》2017年第3期97-99,共3页Journal of Sichuan Forestry Science and Technology

摘　　要：2007年至2011年,利用飞机喷洒白僵菌对马尾松毛虫进行预防性防治,防治前虫口密度:2007年、2008年、2009年逐年显著下降(P<0.05),2010年、2011年、2012年均维持在较低水平,但较前1a差异不显著(P>0.05);防治前有虫株率:2007年、2008年、2009年逐年显著下降(P<0.05),2010年、2011年、2012年均维持在较低水平,但较前1a差异不显著(P>0.05)。结果表明:在马尾松毛虫中度到重度危害林分中喷洒白僵菌,前2 a防治效果体现为降低虫口密度和有虫株率,后3 a防治效果体现为控制虫口密度和有虫株率,预防性防治效果明显。From 2007 to 2011, an aerial spraying pesticide of Beauvefia bassiana was used to prevent against Dendrolimus puncyatus. The result showed that the population density of Dendrolimus puncyatus before control significantly decreased year by year from 2007 to 2009, and kept at a low level between 2010 to 2012, but had no significant difference last year; The ratio of harmed trees before control was consistent with the population density of Dendrolimus puncyatus. The result also proved that when pesticide Beauvefia bassiana was sprayed to prevent Dendrolimus puncyatus in serious hazardous and moderately hazardous forests, the control effect was embodied as decreased population density of Dendrolimus puncyaus and decreased ratio of harmed trees in first 2 years, and kept low level in last 3 years. Therefore, the preventive control effect was very effective.

关 键 词：马尾松毛虫 白僵菌 预防性防治 飞机 

分 类 号：S763.421[农业科学—森林保护学]