摘要
本文简要描述了11个地区不同种源的河北杨9种叶斑病的症状、病原、分布和感病情况。结果表明:陕西佳县的种源感染灰斑病最重,青海民和的种源最轻;而陕西吴旗的种源感染锈病、黑斑病和其他叶斑病最重,甘肃皋兰的种源最轻。
Describes the symptoms, pathogens and distributions of 9 Leaf spots of Populus hopeiensis in 11 different regions. The results showed that the trees from Jiaxian, Shaanxi were most susceptible to Coryneum populinum while the trees from Minhe, Qinghai were the least.The trees from Wuqi, Shaanxi were most susceptible to Melampsora rostrupii, Marssonnina brunnea and other leaf-spots whereas the trees from .Gaolan, Gansa were the least.
出处
《西北林学院学报》
CSCD
1990年第3期17-21,共5页
Journal of Northwest Forestry University
关键词
杨
河北杨
叶斑病
Leaf spots, Populus hopeiensis, different region
