半干旱区覆膜玉米的氮肥运筹及干物质积累特性

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1003-8701|40|4|30-33

ISSN: 1003-8701

Source: 东北农业科学, Vol.40, Iss.4, 2015-01, pp. : 30-33

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Abstract