搜索结果: 1-4 共查到“农业工程 salt”相关记录4条 . 查询时间(0.078 秒)
覆膜开孔蒸发条件下土体高度对水盐运移的影响（Effects of Soil Column Heights on Movement of Soil Water and Soil Salt-during Evaporation under Perforated Plastic Mulch）
覆膜开孔率 土体高度 单位深度累积蒸发量
2010/12/29
通过不同高度土体在不同覆膜开孔率条件下的室内蒸发试验，研究了土体高度变化时水盐分布的差异与相互联系。试验结果表明，不同高度土体的单位深度累积蒸发量与时间变化符合Gardner理论关系，单位深度累积蒸发量与时间和土体总高度存在二元线性函数关系；单位深度累积蒸发量和单位膜孔面积单位深度累积蒸发量均与土体高度和覆膜开孔率存在较好的函数关系；土体高度越小，单位深度含盐量和盐分浓度变化幅度越大，土体高度是影...
微咸水入渗水量对土壤水盐运移特征的影响（Effect on Characteristics of Soil Water and Salt Movement about Saline Water Infiltration with Different Infiltration Amount）
微咸水 含水率 含盐量 脱盐效率
2010/12/28
通过室内3g/L微咸水的入渗试验，分析了不同微咸水入渗水量对土壤剖面含水率、含盐量、脱盐效率和阳离子分布的影响。结果表明，利用3g/L的微咸水进行垂直一维积水入渗，入渗水量较小时，基质势是水分运动的主要动力，入渗量继续增大时，重力势逐渐取代基质势成为水分运动的主要动力；采用3g/L的微咸水入渗，可以使上层土壤脱盐，但使湿润锋处的含盐量急剧增加且达到最大值；湿润锋处含盐量与入渗水量符合指数函数...
The application of sufficient amounts of leaching water by means of an effective method is very important in the management and reclamation of saline and sodic soils. Reclamation cannot be achieved wi...
Modeling Approaches to Salt Management Problems in Irrigated Agriculture：A Review
Salinization salt management alternatives drainage water reuse
2009/1/13
Irrigation projects have been developed throughout human history to increase food production, but they frequently contribute to salinization and drainage problems as well. Examples where salinization ...