摘要
通过实施杨树烂皮病的综合防治措施,防治区的发病率减小到1.0％,感病指数为0.3,而对照区发病率为58.8％,感病指数为25.8,防治效果明显达98.8％,经济效果显著。
Describes the integrated control effect of Valsa sordida of local poplar, Populus gansuensis. The incidence in control plot was reduced to 1.0% and disease index was reduced to 0. 3 as compared to 58. 8% and 25. 8 in check plot respectively. Integrated control effect was 98. 8% and economic effect was obviously indicated.
出处
《西北林学院学报》
CSCD
1993年第3期22-26,共5页
Journal of Northwest Forestry University
基金
国家"七五"科持攻关75-07-04-09-05的子课题
关键词
杨树
烂皮病
综合防治
效益
Populus
Valsa sordida
integrated control
economic effect
