黄土高原长期种植苜蓿对土壤硫、钙、镁的影响

危锋, 郝明德

Effect of Long-term Alfalfa Succession on Soil Sulfur,Calcium,and Magnesium in the Loess Plateau

WEI Feng, HAO Ming-de

. 2009, (3): 288 -293 . DOI: 10.11733/j.issn.1007-0435.2009.03.005