摘要
为明确耕作方式改变对玉米主要病害带来的影响,比较了不同耕作方式下玉米主要病害发生的差异。调查结果表明,新的耕作方式与传统耕作方式相比,玉米苗期病害总体呈减轻趋势,发病率平均减幅为0.16～0.50个百分点。在玉米吐穗、灌浆期,丝黑穗病和茎腐病发病率减幅分别为0.20～0.33个百分点和0.67～1.33个百分点,大斑病和弯孢菌叶斑病减幅分别为6.00～15.30个百分点和1.60～6.50个百分点。玉米纹枯病和灰斑病呈上升趋势,发病率上升幅度分别为0.34～5.33个百分点和1.67～8.00个百分点。改变耕作方式对玉米主要病害的影响因病害种类不同而异,其发生程度总体改变不明显。
The differences of main diseases of maize were compared under different tillage methods in this experiment.The results showed that after using new tillage methods,maize diseases in seedling stage reduced by 0.16-0.50 percentage points on average,compared with the conventional tillage methods.In heading and filling stages,head smut and stalk rot reduced by 0.20-0.33 percentage points and 0.67-1.33 percentage points,respectively.Leaf blight and Curvularia leaf spot relieved by 6.00-15.30 percentage points and 1.60-6.50 percentage points,respectively.However,corn sheath blight and gray leaf spot increased by 0.34-5.33 percentage points and 1.67-8.00 percentage points,respectively.The occurrence of maize diseases changed slightly in different years.Overall,the effects of different tillage me-thods were different according to disease types,but the disease extent did not change obviously.
出处
《河南农业科学》
CSCD
北大核心
2012年第5期92-95,共4页
Journal of Henan Agricultural Sciences
基金
辽宁省科技攻关项目(2011214002)
国家科技支撑计划项目(2006BAD08A06)
关键词
改变耕作方式
免耕
玉米
病害
different tillage methods
no tillage
maize
diseases
