论文部分内容阅读
运用田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利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0~1.0 m范围内的土壤中越冬,越冬最适深度为0~3.0 cm;在树体上,其越冬主要集中在0~60.0 cm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15~20 m,诱集量在梨园中最多。
Field investigation and trapping methods of sexual attractant were used to study the effective distance of wintering place and sex trapping of pear borer in Liyuan and Taoyuan of Shaanxi Province. The results showed that, under natural conditions, the borer was mainly concentrated in the soil of 0-1.0 m around the trunk with the mature larvae overwintered, with the optimum depth of 0-3.0 cm. In the tree, the overwintering mainly concentrated in the 0 ~ 60.0 cm height of the skins and cracks, and the amount of overwintering insects decreased with increasing height; the number of overwintering pests in different varieties of fruit trees was the highest in peach trees and the least in pear trees; the larger the tree age, the worse the management level, The more the amount of overwintering insect. Pear mungbean lure lure the best trapping distance of 15 ~ 20 m, trap the amount of the most in the pear orchard.