太白林区华山松叶蜂的发生与防治

Occurrence and Prevention of Diprionnan huaensis in Taibai Forest Region

2015—2016年对太白林区主要是陕西省太白林业局、太白山自然保护区华山松叶蜂发生情况进行调查,结果表明,华山松叶蜂在太白林区中山区1年发生2代,幼虫老熟后下树爬行寻找场所结茧化蛹越冬。该虫在中山地带山坡、沟谷地均有不同程度发生,5~20年生华山松有虫株率为16.70%~35.50%,虫口密度为63~536头/株。受害最重的是陕西省太白林业局太白河林场。该虫每年5月下旬始发,至10月下旬幼虫老熟后下树结茧化蛹越冬结束。针对华山松叶蜂的发生危害现状提出了综合防治方案。

From 2015 to 2016, an investigation was carried out on the occurrence of Diprionnan huaensis in Taibai forest region, mainly in Taibai forest bureau of Shaanxi Province and Taibai mountain nature reserve. The results showed that Diprionnan huaensis occurred in the central mountain area of Taibai forest region for two generations a year. This insect occurred to different degrees in mountain slopes and valley of Zhongshan area, with the strain rate of Chinese pine in 5-20 years ranging from 16.70% to 35.50% and the population density from 63 to 536 head per plant. The worst hit was Taibai river forest farm of Shanxi Province. This pest occured in late May every year until the end of winter when the larvae mature in late October. A comprehensive control scheme was proposed for the occurrence and damage of Diprionnan huaensis .