诱捕和清理枯死松木对松墨天牛数量的影响

Influence of Trapping and Cleaning up Dead Pine Trees on the Amount of Monoehanusa ternatus

利用广东省林业科学研究院研制的A-3型松墨天牛引诱剂进行诱捕松墨天牛试验,结果表明,松墨天牛在江西省峡江县马尾松林区发生期为5月上旬至8月上旬,大量发生期为6月中下旬,在活动期内有一个明显的活动高峰期,并伴随着活动小高峰。而在清理枯死松木的林分,没有明显的活动高峰期,松墨天牛的种群密度少,只占未清理枯死松木松林的21.7%,松墨天牛种群密度减退十分明显。采用引诱剂诱捕的方法可以杀灭大量的松墨天牛,长期彻底清理枯死松木也可使松墨天牛种群数量大量减少,诱捕和清理结合可大大降低松材线虫病传播机率,从而控制松材线虫病蔓延。

A-3 researched and pro- duced by Guangdong Academy of Forestry was used to trap Monoehanusa ternatus. The results showed that M. ternatus adult stage in Xiajiang County occurred from the early May to the early August, and the occurrence peak was the last 20 days of June. The population density of M. ternatus in the forest that cleaning up dead pine trees accounted for 21.7% of the forest that untreated dead pine trees. Therefore, trapping and cleaning up dead pine trees could greatly reduce the population number of M. ternatus and the spreading of pine wood nematode disease.