摘要
多点区观察分析，叶瘟与穗颈瘟存在一定相关性，距穗颈瘟发生期愈近相关程度意大，但相关性不显著，且在品种、区域和年际间有差异；定株观察分析，感病品种在同一稻田生态条件下，孕穗末期上部三片叶的发病率与穗颈瘟病情指数密切相关。预测穗瘟流行程度除以孕穗末期叶瘟发病率为指标外，应着重考虑气象、栽培等因素的综合作用。感病品种穗颈瘟的药剂防治是极其重要的。
Observation based on the multi-location t sts for different rice varietal types in three years and the correlation analysis of the experimental data showed that the rice neck blast was related to the leaf hiest. Thenearer the neck blast gets to the leaf blast,the greater its correlation. But correlation extent is affected by rice varieties,regions and years. The results provide major information for research the relationship between rice neck blast and main meteorological factors.
出处
《西南农业学报》
CSCD
1995年第4期79-83,共5页
Southwest China Journal of Agricultural Sciences
关键词
叶瘟
穗颈瘟
相关分析
水稻
稻瘟病
Lesf blast Neck blast Correlation analysis Paddy rice.
