摘要
玉米顶腐病的初侵染来源是种子、土壤、病残体带菌,其中种子带菌是远距离传播的主要途径。缺乏抗病品种和耕作质量下降是发病严重的主要原因。系统侵染是该病害发生的主要方式,再侵染发生在感病品种抽穗前后的新叶上,对植株生长和产量形成无重要影响。采取种植抗病品种、轮作倒茬、秋翻灭茬、增施磷、钾、钙元素等保健栽培技术和化学农药喷洒相结合的生态控防措施,可取得较好的防治效果。
Top rot of corn is a systemic infectious diseases. Seeds, soil and plant debris are the primary infection sources. Varieties lack resistance and poor tillage managements are the main causes. Secondary infection occurs in the young leaves of susceptible varieties before or after heading, but it will not affect plant growth and yield. Varieties with high resistance, improvement of cultivation technology and application of chemical pesticides seem to prevent the prevalence or control the damage of this disease.
出处
《草业科学》
CAS
CSCD
北大核心
2009年第11期148-151,共4页
Pratacultural Science
关键词
玉米顶腐病
系统性侵染
再侵染
top rot of corn
systemic infection
secondary infection
