Characteristic of Soil Nitrate Accumulation on Herbal Field and Grain Field in Anguo City,Hebei Province
ZHAO Jiao jiao,LIU Wen ke,LIU Yi fei
Chinese Journal of Agrometeorology . 2013, (03): 301 -305 .  DOI: 10.3969/j.issn.1000-6362.2013.03.008