湿加松病虫害调查及防治对策

The pest survey and controlstrategy of Pinuselliottii×Pinusoaribaea

对引种的湿加松示范林进行虫害监测调查,结果表明1hm2的湿加松示范林样地内有2种有害生物危害,即马尾松毛虫(发病株率86%)和桃蛀螟(发病株率8%),湿加松平均每株有马尾松毛虫11条,感病指数达到4级;桃柱螟数量较少,只有个别树上有虫,感病指数为1级。通过化学防治手段,采用热力喷雾机进行林内大面积喷放,虫害得到了有效控制,为未来发生类似情况提供相关技术参考。

The introduction toPinuselliottii×Pinusoaribaeademonstration forest pest monitoring survey results show that 1ha plots have two kinds of pest which that Dendrolimuspuntatus Walker (onset strain rate 86%) and DichocrocispunctferalisGuenee (onset strain rate of 8%),an average rate of eleven insect on the Pinusel-liottii×Pinusoaribaea,the infection index reached level 4;FewerDichocrocispunctferalisGueneewere discov-ered, only the individual defoliators on the trees and the infection index was level 1. By means of chemical control, the use of thermal spray large areas of forest machine blow, pest has been effectively controlled, and at least provided the technical reference for similar situations in the future.