草地学报
黄土高原轮作系统苜蓿土壤磷素变化特征
何晓雁, 郝明德, 李丽霞, 郭胜安
Soil Phosphorus Variation of Alfalfa Rotation System in the Loess Plateau
HE Xiao-yan, HAO Ming-de, LI Li-xia, GUO Sheng-an
草地学报 . 2014, (5): 1056 -1062 .  DOI: 10.11733/j.issn.1007-0435.2014.05.022