通辽市南部山区松梢螟危害初探

A Preliminary Exploration of the Danger of Pine-bottomed Grasshoppers in the Southern Mountainous Area of Tongliao City

对通辽市南部山区松林进行踏查和详查得知:在库伦旗和奈曼旗油松林,松梢螟发生程度为中到重度,主干和粗大侧枝受害率为15%~62%,同时发现球果受害。该虫在通辽南部山区为害树种单一,均为油松,科尔沁左翼后旗未发现虫害。在初龄幼虫期可采用2.5%溴氰菊酯1000~2000倍液加入10%农药长效缓释剂喷雾。

This paper on the southern mountain pine forest in Tongliao city to carry out a survey and detailed investigation learned that:in the cullen flag and the Neiman flag oil pine forest,pine-tip cohort occurrence degree for medium to severe,trunk and coarse side branch victimization rate of 15%~62%,while found that the ball fruit victim,the victim tree species single,are oil pine,the left wing of the Koryu flag did not find pests.In the early age of larvae can be used 2.5%bromide 1000~2000 times liquid to add 10%pesticide long-acting reprieve spray.