Acta Agrestia Sinica
Soil Composition of Carbon、Nitrogen and Phosphorus after Successive Years of Alfalfa Planting in the Gullies of the Loess Plateau
ZHANG Chun-xia, HAO Ming-de, LI Li-xia
. 2005, (1): 66 -70 .  DOI: 10.11733/j.issn.1007-0435.2005.01.016