水稻品种布局和替换对稻瘟病流行控制示范试验  

Demonstration Trial of Rice Varieties Structure and Replacement for Management of Rice Blast

作　　者：王云月[1] 范金祥[1] 赵建甲 胡玲萍 李炎[1] 陈海如[1] 李正跃 朱有勇[1] 

机构地区：[1]云南农业大学云南省植物病理重点实验室,昆明650201

出　　处：《中国农业大学学报》1998年第S1期12-16,共5页Journal of China Agricultural University

基　　金：云南省攻关项目;国际水稻所合作项目资助

摘　　要：本研究在云南省稻瘟病重病区石屏县宝秀镇和泸西县中枢镇,进行了品种随机布局和品种替换对稻瘟病流行控制的示范试验。结果表明,品种布局试验示范区中,7个品种(包括2个高感糯稻品种)叶瘟平均发病率为4.92%,穗瘟平均发病率为4.78%,平均损失率为0.95%。品种替换示范试验控制效果显著,替换品种合系41和合系39的穗瘟平均损失率仅分别为0.07%和0.15%,而对照的被替换品种楚粳12和楚粳17的穗瘟平均损失率分别高达5.86%和7.13%。本试验结果对利用品种资源有效控制稻瘟病流行有着重要的现实意义。The distribution structure of rice varieties and the replacement for rice blast management were assessed in Baoxiu Town,Shiping County and Zhongshu Town,Luxi County of Yunnan Province where rice blast occurred seriously.The results showed that in the survey area for varieties structure,the average incidence of 7 varieties was 4.92% (LB)and 4.78%(NB)just,and the average loss rate was 0.95%.For variety replace- ment,the average loss rate(NB)of Hexi 41 and Hexi 39 were only 0.07% and 0.15% re- spectively,while the average loss rate of Chujing 12 and Chujing 17 were up to 5.86% and 7.13% respectively.

关 键 词：稻瘟病 品种布局 品种替换 

分 类 号：S511[农业科学—作物学]