准格尔旗和兴和县沙棘蛀干害虫虫情调查研究

Investigation on Trunk Borer of Hippophae rhamnoides in Zhungeer Banner and Xinghe County

2014年4—5月份，采用标准地调查法对内蒙古准格尔旗和兴和县沙棘林虫情进行调查，结果表明：（1）准格尔旗和兴和县沙棘蛀干害虫非常严重，综合死亡率达52．67％；（2）准格尔旗沙棘木蠹蛾有虫株率达92％，虫口密度达28．53头／株，单株最高达115头，红缘天牛有虫株率达81．33％，虫口密度达6．24头／株。单株最高达20头；（3）兴和县沙棘木蠹蛾有虫株率达72．67％，虫口密度达21头／株。单株最高达69头。红缘天牛有虫株率达88．67％，虫口密度达8．7头／株。单株最高达18头。同时，根据调查结果对两个项目地提出了相应的治理措施。

From April to May in 2014, the insect status in stands of Hippophae rhamnoides in Zhungeer Banner and Xinghe County has been investigated by use of standard plot method, the results show, （ 1 ） there is very serious status of trunk borer in stands of Hippophae rhamnoides in Zhungeer Banner and Xinghe County, the comprehensive death rate is 52. 67% ; （2） in Zhungeer Banner, the percentage of insect -infected trees of Holcocerus hippophae- colus is 92%, the population density is 28.53, the highest number of single stem is 115, the percentage of insect - infected trees of Asias halodendri is 81.33%, the population density is 6. 24, the highest number of single stem is 20 ; （ 3 ） in Xinghe County, the percentage of insect - infected trees of Holcocerus hippophaecolus is 72. 67%, the population density is 21, the highest number of single stem is 69, the percentage of insect - infected trees of Asias halodendri is 88.67%, the population density is 8. 7, the highest number of single stem is 18. Meanwhile, the corresponding control measures have been put forward according to the investigation results in two project districts.