摘要
选取梨树为研究对象,观察了受害梨树树干的症状表现,分析了不同因素对梨树生长发育的影响,并提出了相应的防御措施。
Selecting the peartree as the research obj eet, this paper observes the symptoms of the affected pear trunk, analyzes on the influence of different factors on thegrowth of the pear tree, and advances some correspondingpreventing measures.
出处
《科技情报开发与经济》
2007年第16期162-163,共2页
Sci-Tech Information Development & Economy
关键词
梨树
冻害
日灼
pear tree
freeze injury
sunburn
