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-Ming
1,
*
, CHEN Juan
2
, LIU Ting-Ting
1
, LYU Xiao-Dong
1
固定道栽培方式与根系采样方式田间示意图