小麦黄叶的原因和防治措施

• 作 者: 张学民
• 出 处: 科技致富向导
• 发表日期: 1996年04期
• 关键词: 黄叶 麦苗 纹枯病菌 铁锈色 叶鞘 基部 井岗霉素 纹枯病 防治方法 病害

麦田出现黄叶现象,有以下几种原因,要根据不同情况和原因,采取切实可行的措施,以使根壮苗健。 1.病害型麦苗黄叶此类型是由于麦田发生纹枯病而麦苗出现黄叶。其症状是麦苗基部叶鞘部分因纹枯病菌侵入而成铁锈色梭形病斑,病情严重时侵入茎秆,春季使小麦倒伏而严重减产。防治方法:农业措施采

There are several reasons for the emergence of yellow leaves in the wheat fields. Depending on the circumstances and causes, practical measures should be taken so that the roots are strong and healthy. 1. Disease-type barley yellow leaves This type is due to sheath blight occurred in wheat fields and wheat seedlings appear yellow leaves. The symptom is that the part of leaf sheath of wheat seedling base is invaded by Rhizoctonia solani into a rust-colored fusiform lesion. When the disease is serious, it invades the stalk, and in the spring, the wheat loses its weight and seriously reduces the yield. Prevention and treatment methods: agricultural measures mining