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1.INVESTIGATION OF NITROGEN SUPPLYING REGIME OF SOILS Ⅱ.THE TRANSFORMATION OF AMMONIUM SULFATE IN RICE SOILS AND ITS INFLUENCE ON THE SOIL NITROGEN SUPPLYING STATUS
土壤氮素供应状况的研究 Ⅱ.硫酸铵在植稻土壤中的转化及其对土壤氮素供应状况的影响收藏指正
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