1Temporal-spatial Variability of Soil Available Potassium Along Gradients of Precipitation and Temperature in ChinaYU Shi-peng, YANG Jing-song, LIU Guang-ming, YANG Xiao-ying1-4,672Parameters Sensitivity Analysis and Scaling of RZWQMZHU Guo-wei, REN Li5-93Spatial Variability and Optimization of Observation Sampling for Soil Salinity by GISYANG Qi-yong, YANG Jing-song10-144Structural Stress Analysis of Hollow PVC Plates Intertwined Water TankLI Hong-yan, ZHU De-lan, ZHANG Lu-jun, GAO Rong, QU Ming-ming15-185Influence Factors on the Drainage Channel Stability in the Pingluo Saline Land of NingxiaWANG Sui-ji, YAN Yun-xia, KANG Yue-hu19-226Simulation of Different Fertilizer Application Regimes Impact on Agricultural Non-point Source Pollution in Rice Irrigation DistrictSHI Wei-da, CUI Yuan-lai, WANG Jian-peng, HE Jun23-267The Impact of Varying Farmland Water Logged of Rice to the Parameters of Diurnal Chlorophyll Fluorescence Kinetics in Heading and Flowering StageYANG Wei-li, YU Shuang-en, ZHAO Fang-bo27-318A Study on the Water, Heat, and CO2 Flux During Mid-growth Period of Winter Wheat FieldMA Li, LIU Yu, CAI Jia-bing, SHI Jiong-lin32-369Differential Compensatory Effects of Winter Wheat in Water Stress and Re-watering during Jointing Stage in North ChinaLIU Lin, HAO Wei-ping, BAI Qing-jun, MEI Xu-rong, YAN Yong-luan37-4010Effects of Drought Stress and Re-watering on Canopy Architecture and Water use Efficiency of Two Maize GenotypesGUO Zi-feng, GONG Dao-zhi, MEI Xu-rong, HAO Wei-ping, LI Yu-qin, LIU Bin-hui41-4511Study on Hydraulic Parameters of Irrigating Warped Soil in Ningxia Irrigation AreaYI Jun, SHANG San-lin, YANG Zheng-li, WU Hai-qing, MA Ke-xing, ZHU Dong-hai, ZHANG Qing-wen46-5012Salt Leaching of the Coastal Salinized Soil under Different Storage Time of WaterZHANG Lin, SHAO Xiao-hou, WANG Zhen-yu, HUANG Ming-yong, ZHAI Ya-ming, CAI Fei51-5413The Field Flume Experiment of Drainage Channel Erosion Resistance in the Pingluo Saline Land of NingxiaFAN Xiao-li, WANG Sui-ji, DU Jun, KANG Yue-hu55-5914Effect of Irrigation Method on Yield and Quality of Tomato under Different Calcium LevelsYANG Li-juan, ZHANG Yu-long, YANG Min, CHANG Qing60-6215Effects of Wetted Percentage on the Root Redistribution of Mature Korla Fragrant Pear Trees under Drip IrrigationYAN Qing-hong, WANG Wei, REN De-xin, WU Yang, MA Ying-jie, HUANG Xing-fa63-6716Experimental Study on Soil Wetted Volume of Multiple Point Sources from Surge Root Irrigation Interference InfiltrationLI Peng-hong, WANG You-ke, MA Li-hui, ZHAO Ying-na, LI Peng-jun68-7117Infiltration Process of Purple Soil Slope Cropland under the Condition of Artificial Simulated RainstormLONG Tian-yu, LU Qi-qi, WANG Yu-xia76-78,8118Research on the Technology of Wheat Border Farmland Reform and LevelZHENG He-xiang, SHI Hai-bin, ZHU Min, ZHANG Xiang-zhu79-8119Effects of Straw Mulching on Ground Temperature and Growth Relationship of MaizeLI Yue-xing, ZHANG Bao-li, WEI Yong-xia82-8520Response of Tomato Yield, Quality, and Water Use Efficiency to Soil Water Status under Drip Irrigation in GreenhouseWANG Cong-cong, SUN Lei, GUO Feng-tai, SUN Jing-sheng, LIU Hao86-89 