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当前位置: 首页 > 文章 > 小麦条锈病、叶锈病和白粉病在田间混生时的流行过程 中国农业科学 1989,22 (3) 67-71
Position: Home > Articles > EPIDEMIC PROCESSES OF WHEAT YELLOW RUST,LEAF RUST AND POWDERY MILDEW WHEN THEY OCCUR TOGETHER IN THE FIELD Scientia Agricultura Sinica 1989,22 (3) 67-71

小麦条锈病、叶锈病和白粉病在田间混生时的流行过程

作  者：
董金琢;曾士迈;马奇祥
单  位：
河南省农科院植物保护研究所 博士研究生 中国农科院生物技术研究中心;北京农业大学植物保护系
关键词：
小麦;条锈病;叶锈病;白粉病;流行学;相互关系
摘  要：
1986-1988年在田间小区经人工接种,观察比较了小麦条锈病、叶锈病和白粉病单独及混合发生时的流行过程。结果经统计分析表明,在病害混生初期、病情较轻时,病害间没有明显的负相关性,随着病情的加重,病害间的负相关性逐渐增强,表现出明显的相互抑制现象。将不同病害的病情指数经重叠侵染公式转换后进一步分析证明,病害间在高病指下表现的抑制作用除病害间的重叠侵染外,还有拮抗作用存在。该文还对研究多种病虫害相互关系的方法进行了讨论。
译  名：
EPIDEMIC PROCESSES OF WHEAT YELLOW RUST,LEAF RUST AND POWDERY MILDEW WHEN THEY OCCUR TOGETHER IN THE FIELD
作  者：
Dong Jinzhuo Tseng Shimai (Department of Plant Protection, Beijing Agricultural University) Ma Qixiang (Institute of Plant Protection, Henan Academy of Agricultural Sciences)
关键词：
Wheat; Puccinia striiformis; P. recondita; Erysiphe graminis; Epidemiology; Interaction
摘  要：
The epidemic processes of wheat yellow rust (Puccinia striiformis), leaf rust (P. recondita) and powdery mildew (Erysiphe graminis) were observed attentively in the field plots from 1986-1988. Cultivar, Bainog 3217, and mixed races of different pathogens were used.The results showed that when three diseases occurred together,there was some inhibition of disease expression among different pathogens. The interaction was too weak to be distinguished with statistical methods when diseased indices were very low, and it got evident as diseased indices increased.The diseased indices of three diseases were transformed by using multiple infection formalum. Further analysis demonstrated that the interaction expressed on the condition of high diseased intensities resulted from some complevx mechanisms as well as multiple infection among diseases. Methods for studying relationships among pests were also discussed.

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