Yang Yonghui1,2,3,Wu Jicheng1,Wu Pute2,3,Zhao Shiwei2,3,He fang1,Shi Fugang1
1.Institute of Plant Nutrition & Resource Environment,Henan Academy of Agricultural Sciences,450002,Zhengzhou;2.Northwest A & F University;3.Institute of Soil and Water Conservation,Chinese Academy of Sciences: 712100,Yangling,Shaanxi: China