吉林省玉米茎腐病病原菌种类的分布

Distribution of Species of Pathogens of Corn Stalk Rot in Jilin Province

我省玉米茎腐病三种病原菌的分布受降水量的影响有地域性。年度间也有差异．东南部腐霉菌略多，中部禾谷镰刀菌稍多，西部则串珠镰刀菌偏多于其它两种。一般是两种以上病原菌复合侵染。吉林省玉米茎腐病的症状主要是黄枯类型。

Distribution of the three pathogens of corn stalk rot in Jilin Province shows zonation because of the effection of precipitation,and there are differences in different year. Pythium spp. is a little more in southeastern region. F.graminearm a slightmore in central region,and F. moniliforme more than the two others in western region.Generally,Corn is infected by more than two pathogens.The symptom of cord stalk rotin Jilin.Province is mainly yellow blight.