论文部分内容阅读
柿绵蚧是柿树最主要害虫之一,其发生普遍,为害严重,有的果园甚至绝收。为进一步探讨柿绵蚧的发生规律,摸索行之有效的综合防治措施,笔者于1994～1997年对柿绵蚧的发生规律、为害特点进行观察,并进行一系列防治措施探讨,初步筛选出几个防治效果较好的农药组合推广。1 发生规律 柿绵蚧又称柿毛毡蚧、柿绒蚧、柿粉蚧等。据资料,河北、河南、山东、山西、陕西、北
Persimmon meconium persimmon is one of the most important pests, its occurrence is widespread, serious damage, and some orchards and even absolutely. In order to further investigate the occurrence of persimmon mealybugs and find out the effective control measures, the author observed the occurrence and damage characteristics of persimmon mealybugs from 1994 to 1997 and conducted a series of prevention and treatment measures to screen out a few A better control of pesticide portfolio promotion. 1 Occurrence regular persimmon cotton kelp also known as persimmon felidae, persimmon scales, persimmon mealybugs and so on. According to information, Hebei, Henan, Shandong, Shanxi, Shaanxi and North