黑龙江省玉米大斑病菌生理小种研究初报

• 作 者: 李勇 李莫然
• 机 构: 黑龙江省农科院植保所,黑龙江省农科院植保所,
• 出 处: 黑龙江农业科学
• 发表日期: 1982年05期
• 关键词: 玉米大斑病菌 生理小种 玉米面积 种植抗病品种 垂直抗性 病圃 发生次数 人工接种鉴定 水平抗性 显性单基因

玉米大斑病是我省玉米的重要病害,七十年代以来发生次数多、面积大、危害损失严重,仅大流行的1977年就减产粮食数亿斤,是玉米稳定增产的潜在威胁。由于玉米面积大,经济价值低,大斑病发生时间长且此时正处雨季等特点,决定了防治此病应采取以种植抗病品种为主的综合防治措施。国内外的理论与实践充分证明,选育

Corn blight is an important disease of maize in our province. Since the seventies, the number of occurrences of maize blight has been on a large scale and the damage has been severely impacted. Only the pandemic produced hundreds of millions of tons of grain in 1977, which is a potential threat to the steady increase of corn production. Due to the large area of ​​maize, low economic value, long time of spot blight, and the characteristics of rainy season at this time, it is decided that comprehensive prevention and control measures should be taken to control disease. The theory and practice at home and abroad have fully proved that breeding