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Effects of Different Amount of Chemical Fertilizer Usage under Ploughing down Milk Vetch on the Yield and the Dynamics of Soil Nutrients in Rice Filed
吕玉虎 潘兹亮 王琴
Chinese Agricultural Science Bulletin . 2011, (3): 174 -178 .  DOI: 10.11924/j.issn.1000-6850.2010-1795