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中文
The Effects of No Nitrogen Fertilizer on the Grain Yield and Nmin Level of Soil Under Winter Wheat and Summer Maize Rotational Cultivation
WEI Ya-ping, WANG Pu, CHEN Cai-liang
ACTA AGRICULTURAE BOREALI-SINICA . 2004, (
1
): 93 -96 . DOI: 10.3321/j.issn:1000-7091.2004.01.026
