四川玉米纹枯病为害与防治适期研究初报  

Preliminary Studies on Damage and Controlling Time of Corn Sheath Blight in Corn

作　　者：崔丽娜[1] 李晓[1] 杨晓蓉[1] 杨天智 杨家秀[1] 

机构地区：[1]四川省农科院植保所,四川成都610066 [2]雅安市植保站,四川雅安625014

出　　处：《西南农业学报》2009年第4期1181-1183,共3页Southwest China Journal of Agricultural Sciences

基　　金：农业行业专项资助项目(nyhyzx07-049);"十一五"农业支撑计划资助项目(2006BAD08A06);现代农业(玉米)产业技术体系资助项目

摘　　要：在人工接种条件下进行了玉米纹枯病相关研究。结果表明,纹枯病的为害程度与玉米产量损失呈正相关,造成产量损失的主要原因是千粒重下降;垂直距离5cm和水平距离20cm的纹枯病病菌均能引起玉米植株发病;防治适期为玉米九叶至十一叶期,也正是纹枯病的发病初期。The studies on maize sheath blight were conducted in artificial inoculation condition. The results showed that the yield loss was linearly related to the scales of the disease severity. The decrease of the weight of one thousand grains was the main factor of the yield loss. Corn could be infected by Rhizoctonia solani AG1-1A in a range of 5 cm in vertical direction and 20 cm in horizontal. V9 and V11 are the good time to control corn sheath blight in the beginning of the disease.

关 键 词：玉米 纹枯病 为害 防治时期 

分 类 号：S513[农业科学—作物学]