远程智能控制滴灌土壤入渗多参数节水效果试验研究

发布时间：2018-05-14 05:26

本文选题：远程智能控制滴灌 + 压力　；参考：《节水灌溉》2017年05期

【摘要】：基于使用远程智能控制系统,研究扬黄灌区土壤水分入渗试验,分析讨论了2种类型土壤,基于不同压力、埋深程度研究土壤水分入渗速度、湿润锋、时间等,并初步总结出不同外界条件下土壤入渗的变化规律,为保持水土、提高土壤水分生产力提供重要的科学依据。研究表明:压力、贴片式滴灌带的埋深程度对土壤累计入渗量和入渗速度的影响都比较明显。土壤累积入渗量随着压力水头的增加而增大,湿润运移距离位移不单单和环境有关系,压力对其的影响也很大。在越强的压力作用下,水的运送速度越快,这样土壤的入渗速度就越快。速度的增大也加快了各个方向的运移速率,从而达到在短时间内入渗大面积的土壤,增大了运移距离。实验结果显示,湿润锋能够在压力为0.2 MPa的情况下达到最大运移距离;埋深程度也同样影响着土壤累积入渗量和土壤的累计入渗速度,经试验测量埋深10 cm土壤入渗量最大,且地表不宜蒸发到。
[Abstract]:Based on the use of remote intelligent control system, the experiment of soil moisture infiltration in Yanghuang Irrigation area was studied. Two types of soil were analyzed and discussed. Based on the different pressure and depth of burial, the infiltration speed, moisture front and time of soil moisture infiltration were studied. The change law of soil infiltration under different external conditions is summarized preliminarily, which provides an important scientific basis for soil and water conservation and improvement of soil moisture productivity. The results showed that the influence of pressure and depth of drip irrigation zone on soil infiltration and infiltration rate was obvious. The cumulative infiltration amount of soil increases with the increase of pressure head. The distance displacement of wetting migration is not only related to the environment, but also has a great influence on it. The higher the pressure, the faster the water is transported and the faster the infiltration rate of the soil is. The increase of velocity also accelerates the migration rate in all directions, thus increasing the migration distance and infiltration of a large area of soil in a short time. The results show that the wetting front can reach the maximum migration distance when the pressure is 0. 2 MPa, and the depth of burying also affects the cumulative infiltration amount and the cumulative infiltration velocity of the soil. And the surface should not evaporate to.
【作者单位】：宁夏大学土木与水利工程学院;宁夏大学环境工程研究院;
【基金】：自治区项目“高温条件下风光互补节水灌溉设备开发与示范”;自治区项目“中阿绿色智能节水装备与技术研发平台建设”
【分类号】：S152.7

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