Water Evaporation and Mulch Water Retention of Mixed Soils with Limestone Waste Residue and Farmland Soil

WANG Jiahuan; YANG Xinbing; LIU Yanlin; ZHAO Xiaoyong; ZHAO Yingxue; LU Shaowei

doi:10.13870/j.cnki.stbcxb.2022.05.045

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Water Evaporation and Mulch Water Retention of Mixed Soils with Limestone Waste Residue and Farmland Soil

更新时间：2025-03-12

- Water Evaporation and Mulch Water Retention of Mixed Soils with Limestone Waste Residue and Farmland Soil
- Vol. 36, Issue 5, Pages: 369-376(2022)
- 作者机构：
  
  1. 河北农业大学林学院,河北,保定,071000
  2. 河北地矿建设工程集团有限责任公司, 河北省地矿局国土资源勘查中心,石家庄,050000
  3. 北京市林业果树科学研究院,北京,100093
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.05.045
  CLC： S152.7
- Published：2022
- 稿件说明：
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WANG Jiahuan, YANG Xinbing, LIU Yanlin, et al. Water Evaporation and Mulch Water Retention of Mixed Soils with Limestone Waste Residue and Farmland Soil[J]. 2022, 36(5): 369-376.
DOI：

WANG Jiahuan, YANG Xinbing, LIU Yanlin, et al. Water Evaporation and Mulch Water Retention of Mixed Soils with Limestone Waste Residue and Farmland Soil[J]. 2022, 36(5): 369-376. DOI： 10.13870/j.cnki.stbcxb.2022.05.045.

摘要

探究矿山废弃地弃渣与农田土复配后土壤的水分蒸发特性

以及覆盖物添加对水分蒸发的影响

对矿山恢复中土壤水分管理和改善具有实际意义。以石灰岩矿山废弃地现场的弃渣和附近农田土为复配材料

设置0∶10(T1)

3∶7(T2)

5∶5(T3)

7∶3(T4)

10∶0(T5)体积比例

在野外条件下采用土柱法模拟土壤水分蒸发过程

探究复配比例对土壤水分蒸发的影响以及不同覆盖物的保水性能。结果表明:(1)试验前和试验后表层复配土壤含水量均表现为T1>T2>T3>T4>T5

蒸发中期的逐日蒸发量和蒸发结束的累计蒸发量均随弃渣体积比例增加呈极显著降低趋势

不同复配土壤在蒸发前期和蒸发后期的逐日蒸发量没有显著性差异。(2)气象因子中

温度、风速对土壤水分蒸发的影响大于太阳辐射

相对湿度的影响不显著。土壤物理性质中

除毛管孔隙度和非毛管孔隙度与土壤水分蒸发达极显著相关外

其他因子均达显著水平。(3)裸土地添加覆盖物均能降低水分蒸发

根据蒸发量和蒸发速度分析得出

砾石覆盖(直径2~4 cm、厚度5 cm)效果最佳。(4)石灰岩矿山废弃地土壤重构最佳保水搭配方案为弃渣∶农田土以3∶7体积比例复配并覆盖砾石。研究结果可为当地治理采石废弃地提供理论支持。

Abstract

Exploring the characteristics of soil water evaporation after the combination of mine waste residue and farmland soil and the effect of mulch on soil water evaporation is of practical significance to the management and improvement of soil water in mine restoration. Using the abandoned residue of limestone mine wasteland and nearby farmland soil as compound materials

the combination volume ratios of 0∶10 (T1)

3∶7 (T2)

5∶5 (T3)

7∶3 (T4) and 10∶0 (T5) were set. The soil column method was used to simulate the process of soil water evaporation under field conditions to explore the effect of compound ratios on soil water evaporation and the water retention capacity of different mulches. The results showed that: (1) The water content of surface mixed soil before and after the experiment was T1 > T2 > T3 > T4 > T5. The daily evaporation in the middle stage of evaporation and the cumulative evaporation at the end of evaporation decreased significantly with the increase of the volume ratios of abandoned slag. There was no significant difference in daily evaporation between different mixed soils in the early and later stages of evaporation. (2) Among the meteorological factors

the influence of temperature and wind speed on soil water evaporation was greater than that of solar radiation

and the effect of relative humidity was not significant. In soil physical properties

except for capillary porosity and non-capillary porosity

there was a significant correlation between soil water evaporation and other factors. (3) Adding mulch to bare land could reduce water evaporation. According to the analysis of evaporation and evaporation rate

gravel mulch (Diameter 2~4 cm

thickness 5 cm) had the best effect. (4) The best water conservation scheme of soil reconstruction in limestone mine wasteland was abandoned slag∶farmland soil of 3∶7 volume ratio and covered with gravel. The study could provide theoretical support for the local treatment of quarrying wasteland.

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