播期、密度、施氮量对元谋冬繁青稞白粉病发病的影响  

Effects of Sowing Date,Density and Nitrogen Application Rate on Occurrence of Winter Cropping Barley Powdery Mildew in Yuanmou

作　　者：刘仁建[1] LIU Ren-jian(Agricultural Institute,Tibet Academy of Agricultural Sciences,Tibet Lhasa 850032,China)

机构地区：[1]西藏自治区农牧科学院农业研究所

出　　处：《西藏农业科技》2019年第1期30-32,共3页Tibet Journal of Agricultural Sciences

基　　金：西藏自治区重点科研项目(XZ201702NB07)

摘　　要：青稞白粉病都是元谋冬繁青稞的主要病害之一,为了对元谋冬繁青稞白粉病进行防控,本文调查了不同播期、种植密度、施氮量对青稞白粉病发病影响,结果表明播期对青稞白粉病发病影响不明显,而种植密度和施氮量对白粉病发病有显著影响。种植密度越大,白粉病发病越严重;施氮量越大,白粉病发病越严重。Highland barley powdery mildew is one of the main diseases of winter highland barley in Yuanmou.In order to prevent and control powdery mildew in Yuanmou,this paper investigated the effects of different sowing periods, planting density and nitrogen application on the incidence of white powder disease in barley, and the results showed that the sowing period had no obvious effect on the incidence of white powder disease in barley, while the planting density and nitrogen application had a significant effect on the incidence of white powder disease.The higher the planting density, the more serious the incidence of powdery mildew;The greater the amount of nitrogen applied, the more serious the incidence of powdery mildew.

关 键 词：青稞 南繁加代 白粉病 

分 类 号：S511[农业科学—作物学]