摘要
通过田间调查苇状羊茅禾草云斑病病情的基础上，分析了发病率、严重度、病情指数与产量损失率之间的线性关系。结果表明：病情指数与发病率是影响产量变化的主要因素。
On the basis of our field investigation of Rhynchosporium secalis (Oud.) Davis disease damages in Festuca arundinacea Schreb.,the linear relationship among dry matter (DM) yield and rate of disease consequences,disease severity,and damage index as well as losses in grass productivity by the path coefficient analysis statistically.The results indicated that the disease incidence and disease severity were the main factors that affecting grass yield in our study.
出处
《四川草原》
1998年第3期53-56,共4页
Journal of Sichuan Grassland
基金
贵州省自然科学基金
关键词
苇状羊茅
禾草云斑病
通径分析
牧草
Festuca arundinacea Schreb., Rhynchosporium secalis (Oud.) Davis,Path coefficient analysis
