水氮耦合对固定道垄作栽培春小麦根长密度和产量的影响
马忠明1,*, 陈娟2, 刘婷婷1, 吕晓东1

Effects of Water and Nitrogen Coupling on Root Length Density and Yield of Spring Wheat in Permanent Raised-bed Cropping System
MA Zhong-Ming1,*, CHEN Juan2, LIU Ting-Ting1, LYU Xiao-Dong1
水氮耦合与根长密度的关系