水稻纹枯病的发生与井冈霉素防治

• 作 者: 尤国伩
• 机 构: 信阳地区农科所,
• 出 处: 河南农林科技
• 发表日期: 1979年04期
• 关键词: 井冈霉素 水稻纹枯病 水浸状 叶鞘 病害 病情指数 肥力水平 防病效果 剑叶 以早

水(禾刀)纹枯病[Pellicularia sasakii(Shirai)Wei(Hypochnus sasakii Sh-(?)rari)]是信阳地区水(禾刀)上的一种重要病害,随着水(禾刀)施肥量的提高,有趋向严重之势。一、发生和危害信阳地区的早、中、晚(禾刀)都发生此病,并造成危害,其中以早初危害最重。一般都在分蘖末期开始发病,先由下部叶鞘发生水浸状褐色小斑,病斑扩大成云纹斑状。病斑

Pellicularia sasakii (Shirai) Wei (Hypochnus sasakii Sh - (?) Rari) is an important disease on water (Wo) in Xinyang area. With the water (Wo) Increase, there is a trend of serious trend. First, the occurrence and harm Xinyang area early, middle and late (Wo knife) are the occurrence of the disease, and cause harm, of which the most serious harm to the early. Generally begin the onset of the late tillering, the first occurrence of the lower leaf sheath flooded brown spots, lesions expanded into moire spots. Lesions