论文部分内容阅读
栗小爪螨(Oligonychus sp)又叫栗红蜘蛛。板栗叶片被害处轻者退绿,变成黄白色斑点,重者使叶片枯黄早落,影响板栗生长,造成减产或绝产。该虫以卵越冬。翌年5月初越冬卵开始孵化,危害新叶。受害最重的时间是7—8月,平均每株有活虫达227头,此时是防治的有利时期。1985年用40％氧化乐果对板栗进行涂环、打孔内吸防治试验,取得明显效果,现将试验结果介绍如下。
Small chestnut mite (Oligonychus sp) also known as chestnut red spider. Chestnut leaf damage victims of light green, yellow and white spots, the heavy yellow leaves caducous, affecting the growth of chestnut, resulting in reduced production or abortion. The worm to the winter. Overwintering eggs begin to hatch in early May next year, endangering new leaves. The hardest time is from July to August, an average of 227 live worms per plant, this time is a favorable period of prevention and treatment. In 1985 with 40% omethoate chestnut ring, perforated suction prevention and control test, and achieved significant results, the test results are as follows.