摘要
运用圈间调查和性诱剂诱捕方法，对陕西杨凌地区梨园、桃园的梨小食心虫越冬场所和性诱剂诱集的有效距离进行研究。结果表明，自然条件下，梨小食心虫主要以老熟幼虫集中在树干周围0～1．0m范围内的土壤中越冬，越冬最适深度为0～3．0cm；在树体上，其越冬主要集中在0～60．0cm高度的翘皮、裂缝中，且越冬虫量随位置高度增高而减少；不同品种果树上越冬虫量以毛桃树上最多，梨树上最少；树龄越大，管理水平越差，越冬虫量越多。梨小食心虫性诱剂最佳诱集距离为15～20m，诱集量在梨园中最多。
Overwintering locations of Grapholita molesta Busck （Oriental fruit moth） in pear and peach orchards were stud- ied by field investigations and sex pheromone traps in Yangling area. In natural conditions, oriental fruit moths mainly over- wintered as mature larvae in the soil which was in range of 0-1.0 m from stem of the tree. Soil with a depth of 0-3.0 cm was optimal for overwintering G. molesta. Overwintering larvae in the trunk were mainly distributed in old cracked barks at a height of 0-60 cm from ground, and number of them decreased as height of the location increased. Regarding different vari- eties of fruit trees, number of overwintering larvae on peach trees was larger than those on nectarine and pear trees. There was a considerably larger overwintering number in older trees and bad management orchard. Effective trapping distance of sex pheromone traps for G. molesta was 15-20 m, and trapped number of G. molesta was most in pear orchard.
出处
《中国植保导刊》
北大核心
2016年第12期24-28,共5页
China Plant Protection
基金
国家自然科学基金项目(31272043
31071693)
中国博士后科学基金(2013M542388)
陕西省博士后科研项目
中央高校基本科研业务费专项项目(2014YB087)
陕西省农业科技创新与攻关项目(2016NY-058)
关键词
梨小食心虫
越冬
性诱剂
诱集距离
Grapholita molesta
overwintering
sex pheromone
trap distance
