退化草原土壤有机质对氮素添加梯度的响应
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1009-315x|17|3|202-206
ISSN: 1009-315x
Source: 大连民族学院学报, Vol.17, Iss.3, 2015-01, pp. : 202-206
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Abstract