项目名称: 盐渍化引黄灌区农田GSPAC系统对不同灌溉模式的响应机制及水肥热盐协同调控研究
项目编号: No.51469020
项目类型: 地区科学基金项目
立项/批准年度: 2015
项目学科: 水利工程
项目作者: 屈忠义
作者单位: 内蒙古农业大学
项目金额: 48万元
中文摘要: 本课题以内蒙古盐渍化引黄灌区为研究对象,以井渠结合地下水膜下滴灌-引黄补灌模式为核心,以田间试验为基础,开展不同灌溉模式(引黄地面灌溉、传统井渠结合灌溉、黄河水直接滴灌、地下水滴灌-引黄补灌)农田土壤水肥热盐迁移规律-地下水环境变化与作物响应方面的对比试验研究,揭示不同灌溉、补水模式对土壤结构、水肥盐迁移、膜下滴灌增温、作物生长及地下水水质、水位的影响机制和不同滴灌补水模式的节水保肥和储水洗盐效应机理,提出不同滴灌补水模式下的水肥热盐协同调控技术。结合灌区水资源规划成果,将SWAP 模型、GIS 及MODFLOW模型进行耦合,构建SWAP-GIS-MODFLOW模型,结合已有研究成果和基础数据,开展河套灌区不同灌溉模式下区域土壤水盐迁移动态和面源污染模拟评价与节水潜力分析,揭示在引黄盐渍化灌区开展井渠结合膜下滴灌的可行性,为引黄灌区的农业水资源高效利用和灌区的可持续发展提供决策依据。
中文关键词: 盐渍化灌区;GSPAC系统;灌溉模式;响应机制;水肥热盐协同调控
英文摘要: The salinization Yellow River Irrigation District in Inner Mongolia was elected as a research object to study the movement of soil moisture, nutrient, heat as well salt,the chang of groundwater environment and the crop response mechanism under different irrigation patterns ( Yellow River surface irrigation , traditional irrigation combined with canal and wells , the drip irrigation with Yellow River Water direct, groundwater drip irrigation - Yellow River supplementary irrigation ),basing on field experiments and groundwater drip irrigation - Yellow River supplementary irrigation as the main pattern . The sduty aims at putting forward control technology of collaborating with water fertilizer heat salt,basing the effect of different irrigation patterns on the structure of the soil , water fertilizer salts migration mechanism,warming with drip irrigation under plastic,crop growth and groundwater quality as well level ,also on mechanisms of water -saving as well fertilizer-retaining and salt-washing as well water-storing in different patterns.The SWAP-GIS-MODFLOW model was built through coupling SWAP model , GIS and MODFLOW model,which will be used to simulate regional soil water -fertilizer-salt movement,the change of groundwater,agricultural non-point pollution,and water-saving potential analysis after well and canal - groundwater drip irrigation Yellow River supplemental irrigation carried out,combining with irrigated water resources assessment and planning achievements and existing research and basic data.The target of regional simulate is to reveal the feasibility of well and canal - groundwater drip irrigation Yellow River supplemental irrigation pattern in salinization Yellow River Irrigation District in Inner Mongolia ,and to provide a scientific basis for the planning of the water-saving irrigation and irrigation management decisions.
英文关键词: Salinization irrigation district;GSPAC system;irrigation patterns;response machanism;collaborative Regulation of water fertilizer heat and salts