8Niu L Y, Fang S W, Ru Z Li G Zhang Z P, Wang Z W. Rapid determination of single-stalk and population lodging resistance strengths and an assessment of the stem lodging wind speeds for winter wheat. Field Crops Research, 2012, 139: 1-8.
9http://newpaper.dahe.cn/hnrb/html/2012-O9/ll/content 780327 htm' div =-1.