不同病原菌对光肩星天牛致病力测定及应用技术研究

Determination of lethality of different pathogens on Anoplophora glabripennis and its application

不同病原真菌对光肩星天牛Ａｎｏｐｌｏｐｈｏｒａ ｇｌａｂｒｉｐｅｎｎｉｓ（Ｍｏｔｓｃｈ）幼虫致病力的测定表明：粉拟青霉９１０１、球孢白僵菌Ｚ２８ 和卵孢白僵菌寄生率均为１００％ ，粉拟青霉Ｚ２６为８７．５％ 。各种菌对光肩星天牛的最适致死温度是：粉拟青霉Ｚ２６ １５℃～２０℃；粉拟青霉９１０１ １５℃～２５℃；球孢白僵菌Ｚ２８ ２０℃～３０℃。用自己分离所得的球孢白僵菌Ｚ２８，粉拟青霉Ｚ２６，以含孢量４ 亿孢子／ｍ ｌ＋ ０．０２％ 增效剂做林间塞孔防治试验，每种处理与对照相比差异极显著。球孢白僵菌Ｚ２８１～３ 次／年处理间无明显差异，防治效果达９３．４４％ ～９７．２５％ 。粉拟青霉Ｚ２６１～３ 次／年处理间无明显差异，防治效果在９２．９２％ ～９６．５５％ 。两种菌混合塞孔，以１～３次／年处理间无差异，防效达９３．６４％ ～９６．４８％ 。每株树所用菌剂成本为０．０２元。

The experiments show that all the lethal rate of Paecilomyces farinosus 9101, Beauveria bassiana Z 28 and B.brongniartii on Anoplophora glabripennis are 100%,and P.farinosus Z 26 on the insect is 87.5%.The optimum lethal temperatures are: for P. farinosus Z 26 15℃～20℃; P.farinosus 9101 15℃～25℃; B.bassiana Z 28 20℃～30℃.The pathogens with a concentration of 4×10 8spores/ml+0.02%synergist are used to fill the holes bored by A.glabripennis .The mortalities of larvae are all above 92%.