Acta Agrestia Sinica
Effect of Water and Fertilizer Coupling on Soil Fractal Characteristics and Nutrients of Alfalfa Fields in the Ningxia Yellow River Diversion Irrigation Area
LIU Lin, SHA Bai-ping, GAO Xue-qin, FU Bing-zhe
Acta Agrestia Sinica . 2021, (11): 2538 -2546 .  DOI: 10.11733/j.issn.1007-0435.2021.11.020