Effects of Different Nitrogen Levels on Occurring Degree of Powdery Mildew on Winter Wheat
Guo Lufang
Chen Guimin
Ma Zhaowei
Xu Lingli
Chen Guangfeng
Abstract：Under the field condition,the occurring degree of powdery mildew on two wheat varieties under different nitrogen levels were studied with the diseased plant rate,diseased leaf rate and disease index as statistical indicators to characterize the incidence of wheat.The results showed that the diseased plant rate,diseased leaf rate and disease index of wheat under high nitrogen levels were significantly higher than those under low nitrogen level.Under the same nitrogen level,the diseased plant rate,diseased leaf rate and disease index of Jimai 22 were lower than those of Luyuan 502.Therefore,appropriately reducing nitrogen application amount and selecting resistant wheat varieties could effectively reduce the incidence of powdery mildew.
Keywords：Winter wheatNitrogen application ratePowdery mildewDiseased plant rate
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 91-94 )