论文部分内容阅读
蒙古象鼻虫和大灰象鼻虫是当前苗圃中头号的大害虫,发生非常普遍,仅辽宁省就有30几个苗圃每年都有发生,对苗木的危害也十分严重,特别是食害杨树扦插幼苗为最严重。常常造成缺苗断条,甚至毁种,大大的影响了苗木的质量与产量。本年接受对苗木象鼻虫防治研究任务以来,迄至“五一”前夕,经药剂防治与挖沟防治试验,已初步获得了一些结果。仅将初步摸索到的几种防治方法介绍如下,供做防治时试用。
The Mongolian weevil and the large gray weevil are the number one pests in the current nursery. The occurrence is very common. Only 30 nurseries in Liaoning Province occur annually, and the damage to seedlings is also very serious. In particular, Cutting seedlings for the most serious. Often caused lack of seedlings broken, or even destroyed species, greatly affected the quality and yield of seedlings. This year to accept the seedling weevil control research mission, up to “51 ” on the eve of the pharmaceutical control and trenching prevention and control trials, has been initially obtained some results. Only a preliminary exploration of several prevention and treatment methods are as follows, for prevention and treatment of trial.