蓄水条件下土壤pH与电导率的空间分布与关系的研究

发布时间：2018-04-04 06:43

本文选题：蓄水　切入点：土壤p　出处：《节水灌溉》2017年12期

【摘要】：采用网格法对陕西富平国土资源部退化及未利用地土地工程整治重点实验室中试基地对流-弥散盐碱地试验田进行采样,分别测定0~10、10~20、20~30、30~50、50~70、70~100、100~150、150~200 cm的土壤p H及电导率。研究了蓄水条件下土壤p H与电导率的空间分布特征及二者之间的相关关系,结果表明:在蓄水条件下,土壤p H和电导率均随着土壤深度的增加而增加;土壤p H与电导率均在20~50 cm土层处具有最高变异系数;土壤p H与电导率呈极显著正相关关系。通过掌握蓄水条件下土壤p H与电导率的空间分布特征及相关关系可以为盐碱地地区盐渍化的防治和盐碱地的合理利用提供依据。
[Abstract]:The soil pH and electrical conductivity of the experimental field of convection-dispersion saline-alkali soil in the experimental base of key laboratory of degraded and unused land engineering in Fuping, Shaanxi Province were measured by grid method. The soil pH and electrical conductivity of the soil were measured at 0 ~ 10 ~ 10 ~ 10 ~ 10 ~ 20 ~ 20 ~ 20 ~ 30 ~ 30 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 70 ~ 70 ~ 100 ~ 100 ~ 100 ~ 150 ~ 150 ~ 200 cm.The spatial distribution characteristics of soil pH and conductivity and the correlation between them were studied under the condition of water storage. The results showed that under the condition of water storage, both soil pH and conductivity increased with the increase of soil depth.Soil pH and conductivity had the highest coefficient of variation in the soil layer of 20 ~ 50 cm, and soil pH had a very significant positive correlation with the conductivity.By mastering the spatial distribution characteristics of soil pH and electrical conductivity and the correlation between soil pH and electrical conductivity under the condition of water storage, we can provide the basis for the prevention and control of salinization and the rational utilization of saline-alkali land.
【作者单位】：国土资源部退化及未利用土地整治工程重点实验室;陕西省土地工程建设集团;陕西省土地整治工程技术研究中心;陕西地建土地工程技术研究院有限责任公司;
【基金】：陕西省重点科技创新团队计划项目(2016KCT-23)
【分类号】：S152

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