1The trend of soil organic carbon, total nitrogen, and wheat and maize productivity under different long-term fertilizations in the upland fluvo-aquic soil of North China

作者： Yang, Jun; Ren, Shun-rong; Liu Hailong; SCI

机构： Tianjin Inst Agr Resources & Environm, Tianjin 300192, Peoples R China; Chinese Acad Agr Sci, Agr Informat Inst, Key Lab Agriinformat Serv Technol, Minist Agr, Beijing 100081, Peoples R China;

来源：NUTRIENT CYCLING IN AGROECOSYSTEMS

关键词： Fluvo-aquic soil Long-term fertilization Grain yield Soil organic carbon Total nitrogen