不同树种对刺沙棘钉毛蚜的耐害性  

Tolerance of different tree species to Capitophorus rhamnoides Zhang

作　　者：王志政[1] 温俊宝[1] 王莹[1] 骆有庆[1] 宗世祥[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室

出　　处：《生态科学》2010年第2期136-139,共4页Ecological Science

基　　金：国家自然科学基金重点项目“沙棘木蠹蛾灾害发生机制研究”(30730075);长江学者与创新团队发展计划(PCSIRT0607)

摘　　要：在野外自然感染条件下，以新梢卷叶恢复率作为耐虫性指数，分析了20个不同树种对刺沙棘钉毛蚜的抗虫程度及其耐害补偿能力。结果表明：1）除桃树、沙枣和榆树外，其它树种均为刺沙棘钉毛蚜的寄主树种。2）在所有沙棘树种中，沙棘品种和沙棘杂交种最为感虫，而沙棘种和亚种则抗虫性较好。3）不同树种卷叶恢复程度差异较大。在危害高峰期，卷叶率较低的树种，如橙色、棱果沙棘等，在自身耐害补偿功能和自然天敌的影响下，‘其卷叶可以完全恢复正常，表现出较强的耐害性；而卷叶率高的树种，如优胜、楚伊、乌兰格木等沙棘品种，由于受害程度较重，自身耐害补偿功能力有限，卷叶不能完全恢复正常，恢复率不到50％，表现出较弱的耐害性；苹果和云南沙棘卷叶恢复率分别为55．6％和50％，耐害性居于上述两者之间。Under the condition of natural infection in the wild, the authors analyzed the resistance degree and compensation ability of 20 tree species to Capitophorus rhamnoides Zhang using the recovery rate of leaf roll of sprouts as insect resistance index. The result indicated that tree species except for peach, russianolive and elm were the hosts for C. rhamnoides Zhang. Among all the sea buckthom species, the varieties and coenospecies were susceptible to C. rhamnoides, but species and subspecies were relatively resistant to C. rhamnoides. There was significant difference in the recovery rate of leaf roll among varieties. At the harm peak, tree species with low leaf roll rate, such as Chengse and Lengguo etc., could recover completely due to their own harm resistance compensation ability and natural enemies, presenting a strong resistance to C. rhamnoides. Whereas, tree species with high leaf roll rate, such as Yousheng, Chuyi and Wulangemu etc., which were severely damaged, could recover no more than 50% for their limited harm resistance and compensation ability, suggesting they were weak in resisting to C. rhamnoides. The recovery rates of leaf roll of apple tree and Yunnan Sea buckthorn were 55.6% and 50%, respectively, which were moderately resistant to C. rhamnoides.

关 键 词：刺沙棘钉毛蚜 沙棘 耐害性 

分 类 号：S763.301[农业科学—森林保护学]