夏季施氮、钾肥对高羊茅褐斑病的影响  

Effect of Nitrogen and Potassium Application on the Disease of Tall Fescue Turf Under Field

作　　者：董爱香[1] 胡林[1] 赵美琦[2] 张新民[1] 张福锁[1] 

机构地区：[1]中国农业大学资环学院 [2]中国农业大学植保学院,北京100094

出　　处：《草地学报》2002年第3期203-206,共4页Acta Agrestia Sinica

基　　金：北京市重点自然基金项目 (编号 6 0 0 10 0 1) ;北京抗旱;抗病;长绿草坪草种选育及管理技术 ;中美合作草坪养护管理研究项目 ;俄勒冈种子理事会 ( OSC MAP)资助

摘　　要：在大田条件下 ,研究高羊茅施用氮、钾肥对夏季褐斑病发病的影响。结果表明 ,施钾水平的高低及氮、钾交互作用对褐斑病发病的影响不大。夏季增施氮肥减轻了褐班病发病的严重度 ,但是加快了病害流行速率 ,施氮越高 ,病害扩展速率越快 ,恢复速率越慢。The disease investigation of tall fescue turfgrass was studied under different nitrogen and potassium application treatments in the field.The results showed that the potassium application rate and the interaction of nitrogen and potasssium had not significant effect on the degree of disease occurring,the different nitrogen application treatments mainly effected the rate of disease spreading as it says the higher rates of nitrogen appliction in the experiment,the more spreading of the disease,but the recovery speed was slowly.

关 键 词：夏季 褐斑病 钾肥 高羊茅 发病严重度 流行速率 氮肥 施肥 草坪草 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]