论文部分内容阅读
柞树白粉病是柞树的主要病害,在我国的大部分有柞林的省份都有发生和危害,严重的影响柞树的生长发育和放养柞蚕。1977～1980年,我们对此病的病原菌的生物学特性和传染规律及防治方法等进行了研究。本文报道的是病原菌形态观察、传染规律及其与环境条件和树种的关系、对柞树生长和养柞蚕的影响及有效的防治方法:6月下旬～7月上旬,往柞树上喷布0.05～0.1%浓度的霉锈净或甲菌定,大面积防治效果分别达到78.4～92.5%和75.5～87.5%,对柞树和柞蚕无药害。
Oak tree powdery mildew is the main disease of oak trees, most of our country has oak forest occurrence and damage, a serious impact on oak tree growth and stocking tussah. From 1977 to 1980, we studied the biological characteristics of the pathogenic bacteria and the transmission and prevention methods. This article reports the morphological observation of pathogens, the law of infection and its relationship with environmental conditions and tree species, the impact of oak tree growth and raising tussah and effective control methods: late June ~ early July, oak trees sprayed on the 0.05 to 0.1 % Of the concentration of mold rust net or Ding Ding, large-scale control effect reached 78.4 ~ 92.5% and 75.5 ~ 87.5%, no damage to oak trees and Tussah.