中林46杨早期落叶原因分析与治理对策  

Reasons analysis and control counter measures of early leaf fall of Poplar

作　　者：牛迎福 王海明 代玉民 吴福荣 祁建华 惠秋华 

机构地区：[1]菏泽市林业局,274011 [2]菏泽市牡丹区农业局

出　　处：《山东林业科技》2004年第5期20-21,共2页Journal of Shandong Forestry Science and Technology

摘　　要：造成中林 46杨早期落叶的原因主要是抗病性差 ,遇到特殊的气象条件 ,导致黑斑病严重发生。为防止早期落叶 ,应从营林措施入手 ,选育抗病良种 ,大力营造混交林 ,适时防治病虫害。The major reason leading to early leaf fall is low resist ability of zhonglin-46 poplar. So Marssonina brunnea burst out seriously under special meteorological condition. There are the ways to prevent early leaf fall: selecting and breeding resistance species, adopting the silvicultural technical measures of constructing mixed forest and controlling diseases and insect pests promptly.

关 键 词：杨树 早期落叶 治理对策 

分 类 号：S763.19[农业科学—森林保护学]