TANG Guang-mu1,XU Wan-li1,GE Chun-hui1,MA Hai-gang1,ZHENG Jin-wei2,LI Lian-qing2,PAN Gen-xing2(1.Institute of Soil and Fertilizer & Agricultural Sparing Water,Xinjinag Academy of Agricultural Science,Urumqi 830091,2.Institute of Resource,Ecosystem and Environment of Agriculture,Nanjing Agricultural University,Nanjing,Jiangsu 210095)
