Acta Agrestia Sinica
GC-MS Analysis of Root Exudates of Alfalfa In Different Cropping Years on The Loess Plateau
BI Bo-yuan, HAN Feng-peng
Acta Agrestia Sinica . 2018, (3): 611 -617 .  DOI: 10.11733/j.issn.1007-0435.2018.03.012