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The Effects of Optimize Nitrogen Fertilizer on the Nitrate-N of Soil under Winter Wheat and Summer Maize Rotational Cultivation
Yang Renpeng, Wang Deke, Liu Changqing, Liu Chunsheng
Chinese Agricultural Science Bulletin . 2006, (12): 369 -369 .  DOI: 10.11924/j.issn.1000-6850.0612369