Effects of Biochar and Straw Return on Mineral Nitrogen and pH of the Surface Soil in Farmland of the North China Plain
ZHANG Xing, LIU Xing-ren, LIN Guo-lin, ZHANG Qing-wen, ZHANG Qing-zhong,WANG Qin
Chinese Journal of Agrometeorology . 2016, (02): 131 -142 .  DOI: 10.3969/j.issn.1000-6362.2016.02.002