通辽地区杨干象发生规律试验观察初报  

Experimental Observation of Occurrence Law of Cryptorrhynchus lapathi in Tongliao Area

作　　者：敖特根[1] 那顺勿日图 蒋贺喜格 常桐 韩强 Ao Tegen;Na Shunwuritu;Jiang Hexige;Chang Tong;Han Qiang(Tongliao City Forest Pest Control and Quarantine Station, Tongliao 028000, China;Kezuozhongqi Forest Pest Control and Quarantine Station, Zuozhong 029300,China)

机构地区：[1]通辽市森林病虫害防治检疫站,内蒙古通辽028000 [2]科左中旗森林病虫害防治检疫站,内蒙古左中029300

出　　处：《防护林科技》2019年第10期36-38,共3页Protection Forest Science and Technology

摘　　要：通过选取样株和定期定点观察,对通辽地区杨干象发生规律进行了调查研究,结果表明:杨干象在内蒙古通辽市1a发生一代,以幼虫(大多数)或卵(少数)在寄主枝干韧皮部越冬。4月下旬至5月上旬,越冬的幼虫开始活动,越冬的卵也开始孵化。5月下旬至6月上旬,幼虫蛀入木质部化蛹,蛹期12d左右,6月下旬逐渐开始羽化,7月中旬为羽化盛期。7月下旬至8月上旬交尾产卵,不同时间产的卵的卵期差异很大,8月中旬产下的卵,卵期平均12d;9月上旬产的卵,卵期平均20d;后期产下的卵直到第二年春季才孵化。Through the establishment of the sample and regular fixed-point observation, the occurrence of Cryptorrhynchus lapathi were studied.Result shows that: Cryptorrhynchus lapathi occur in the first generation of Tongliao City, Inner Mongolia, and the larvae (most) or eggs (a few) overwintered in the host phloem.From late April to early May, the wintering larvae begin to move, and the wintering eggs begin to hatch.From late May to early June, the larvae break into the xylem and phlegm, and the flood season begin around 12 d, and gradually began to emerge in late June, and the mid-July is the peak of emergence.The eggs were laid at the end of the period from late July to early August.The egg lengths of the eggs produce at different times vary greatly.The eggs lay in mid-August have an average egg length of 12 d, while the eggs produce in the first ten days of September have an average egg length of 20 d.The eggs that were laid later did not hatch until the spring of the second year.The article introduces in more detail the occurrence law of Cryptorrhynchus lapathi in Tongliao Area, and provides relevant basis for scientific prevention and control.

关 键 词：杨干象 通辽 发生规律 

分 类 号：S763.38[农业科学—森林保护学]