An Experimental Study of the Transportation and Transformation of Nitrogen in Border Irrigation with Yellow Ｒiver Water under Surface Urea

WANG Yong，ZHANG Jian-feng，WU Wen-yong，ZHAO Yong-an ，WAN Fa，Liao Ｒen-kuang

China Rural Water and Hydropower . 2017, (7): 1 -5 .