栎线小卷蛾幼虫危害皮胎果梨花蕾防治指标研究初报  

Preliminary Report on the Damage of Pyrus ussuriensis Bud Caused by Larvae of Zeiraphera isertana and Control Index

作　　者：马艳芳 张山林 常承秀 张永强 田炜 杨学毅 

机构地区：[1]临夏州森林病虫害防治检疫站,甘肃临夏731100

出　　处：《甘肃林业科技》2012年第1期40-41,共2页Journal of Gansu Forestry Science and Technology

摘　　要：栎线小卷蛾的幼虫危害梨树的花和嫩叶,且种群数量逐年增大,已成为影响临夏州皮胎果产业发展的重要害虫。通过对栎线小卷蛾幼虫为害皮胎果梨花的损失率进行研究,并根据近几年栎线小卷蛾幼虫防治技术推广应用实践,确定栎线小卷蛾幼虫防治指标,结果表明:皮胎果花蕾损失率与栎线小卷蛾幼虫虫口密度之间呈极显著的正相关线性关系,虫口密度越大,落蕾量越大;栎线小卷蛾幼虫防治指标为7头/100花。Flower and tender leaf of Pyrus ussuriensis were damaged by larvae of Zeiraphera isertana, and pop- ulation amount increased year by year, Zeiraphera isertana have become important insects in Linxia and they had in- fluence on production development of Pyrus ussuriensis. The study was carried out on the loss rate of Pyrus ussurien- s/s damaged by Zeiraphera isertana in this paper, based on popularization practice of control technique of Zeiraphera /sertana, control index of Zeiraphera/sertana was determined, the results showed that there was a highly significant positive linear correlation between loss rate of Pyrus ussuriensis bud and the population density of Zeiraphera iser- tana, and the population density of insects was larger, loss rate of Pyrus ussuriensis bud was larger; control index of larvae of Zeiraphera isertana achieved 7 per hundred flowers.

关 键 词：栎线小卷蛾 虫口密度 防治指标 

分 类 号：S763.42[农业科学—森林保护学]