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斥水土保水性在农业中的应用

张璐 吴玉琴

张璐,吴玉琴.斥水土保水性在农业中的应用[J].农业工程,2022,12(7):72-77. doi: 10.19998/j.cnki.2095-1795.2022.07.014
引用本文: 张璐,吴玉琴.斥水土保水性在农业中的应用[J].农业工程,2022,12(7):72-77. doi: 10.19998/j.cnki.2095-1795.2022.07.014
ZHANG Lu,WU Yuqin.Application of water conservation of water repellent soil in agriculture[J].Agricultural Engineering,2022,12(7):72-77. doi: 10.19998/j.cnki.2095-1795.2022.07.014
Citation: ZHANG Lu,WU Yuqin.Application of water conservation of water repellent soil in agriculture[J].Agricultural Engineering,2022,12(7):72-77. doi: 10.19998/j.cnki.2095-1795.2022.07.014

斥水土保水性在农业中的应用

doi: 10.19998/j.cnki.2095-1795.2022.07.014
详细信息
    作者简介:

    张璐,硕士生,主要从事非饱和土壤研究E-mail:z24913499@163.com

  • 中图分类号: S152.7+1

Application of Water Conservation of Water Repellent Soil in Agriculture

  • 摘要:

    在砂土中加入十八胺使其具有斥水性,对斥水土在农业方面的应用展开研究,在室外采用铺盖斥水土、覆膜及不覆膜3种方式在相同的自然环境下进行辣椒的种植,对比分析各种植方式的累积浇水量、株高、径粗、同期采摘的辣椒质量等参数;同时采用温纳四极法在同等土壤环境条件下对铺盖斥水土的区域和不做保水措施的天然土壤区域的土壤电阻率分别进行雨前、雨后的对比分析。试验发现:在辣椒前期生长中,铺盖斥水土区域的辣椒浇水量在3者中最少,同期辣椒产量略少于覆膜区域但远超过未覆膜区域,株高偏低,径粗最小;在测量土壤电阻率时,铺盖斥水土区域的电阻率降雨前后均比自然土壤区域的电阻率小,降雨前后电阻率值的变化幅度也较小。试验表明,斥水土可以降低天然土壤内部的水分运动速率,对减少土壤内部水分蒸发具有明显的效果,有利于作物的生长,为干旱地区提供新的保水措施思路。

     

  • 图 1  土壤电阻率测试场地

    Figure 1.  Soil resistivity test site

    图 2  电阻率随土壤深度的变化

    Figure 2.  Resistivity changes with soil depth

    图 3  各区域累积浇水量

    Figure 3.  Cumulative amount of watering in each area

    图 4  辣椒株高、茎粗及采摘质量对比

    Figure 4.  Comparison of plant height, stem diameter andpicking quality of pepper

    图 5  土壤水分蒸发原理

    Figure 5.  Principle of evaporation of soil water

    表  1  两块区域降雨前后电阻率差值

    Table  1.   Difference in resistivity between two regions before and after rainfall

    深度/cm电阻率差值/(Ω·m)
    P0区域P1区域
    55.454.61
    104.842.16
    153.442.25
    203.502.09
    254.112.07
    304.212.64
    下载: 导出CSV
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  • 收稿日期:  2021-12-31
  • 修回日期:  2022-03-05
  • 出版日期:  2022-07-20

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