大麦白粉病与播种密度、施氮水平关系探讨  

Discussion on Powdery Mildew of Barley in Relation to Nitrogen Application Level and Sowing Density

作　　者：黄金堂[1] 陈海玲[1] 李清华[1] 

机构地区：[1]福建省莆田市农业科学研究所,莆田351144

出　　处：《大麦与谷类科学》2006年第1期19-22,共4页Barley and Cereal Sciences

摘　　要：采用裂区试验方法,以施氮水平为主处理(A),播种密度为副处理(B),对大麦白粉病发病程度进行研究。试验结果:(1)不同施氮水平间大麦白粉病发病程度有显著差异,以最高施氮量(A=415.0kg/667m2)发病最重;(2)不同播种密度白粉病发病没有显著差异;(3)A×B互作不显著即施氮的效应不因播种密度而异,播种密度的效应也不因施氮水平多少而异。以期为大麦生产提供科学指导。The experiment of split—plot design with main treatments different nitrogen application level and subtreatments different sowing density was conducted to study the disease severe degree and the pathogenic indices of barley powdery mildew. The results showed that the disease severe degrees with different nitrogen application level were significant difference, the highest nitrogen application level with the severest disease degree, while no significant difference was found with different sowing density. The interaction of nitrogen application level and sowing density was not significant, their effects not being changed hv the other.

关 键 词：大麦 白粉病 病情指数 播种密度 施氮量 

分 类 号：S435.123[农业科学—农业昆虫与害虫防治]