TY - Journal of Yangtze River Scientific Research Institute A1 - ZHENG Jian, HAN Hui-qing, CAI Guang-peng, GAO Hong-juan T1 - Spatial-Temporal Characteristic of Agricultural Non-point Source Nitrogen and Phosphorous Pollution in Guizhou Y1 - 2013-06-04 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 1 EP - 4 VL - 30 IS - 6 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2013.06.001 ER -