Effect of Long-term Straw Returning on Distribution and Accumulation of Nitrate Nitrogen in Dryland Soil
Yang Zhenxing, Zhou Huaiping, Guan Chunlin, Xie Wenyan
ACTA AGRICULTURAE BOREALI-SINICA . 2013, (3): 179 -182 .  DOI: 10.3969/j.issn.1000-7091.2013.03.032