Study on Leaching Effect of Different Organic Materials on Saline-alkali Soil

WANG Shuhua; CHEN Shuang; WANG Yue; LI Yuanbin; XU Luyao; WANG Qiang; LI Yingfei; XUE Pengfei; JIAO Jiaguo; LI Huixin; HU Feng

doi:10.13870/j.cnki.stbcxb.2021.06.050

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Study on Leaching Effect of Different Organic Materials on Saline-alkali Soil

更新时间：2025-03-12

- Study on Leaching Effect of Different Organic Materials on Saline-alkali Soil
- Vol. 35, Issue 6, Pages: 376-383(2021)
- 作者机构：
  
  1. 南京农业大学资源与环境科学学院, 江苏省有机固体废弃物资源化协同创新中心,南京,210095
  2. 山东博华高效生态农业科技有限公司,山东,滨州,256500
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.06.050
  CLC： S154.6
- Published：2021
- 稿件说明：
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WANG Shuhua, CHEN Shuang, WANG Yue, et al. Study on Leaching Effect of Different Organic Materials on Saline-alkali Soil[J]. 2021, 35(6): 376-383.
DOI：

WANG Shuhua, CHEN Shuang, WANG Yue, et al. Study on Leaching Effect of Different Organic Materials on Saline-alkali Soil[J]. 2021, 35(6): 376-383. DOI： 10.13870/j.cnki.stbcxb.2021.06.050.

摘要

主要通过土柱模拟试验探究不同有机物料对渗滤液的盐分和可溶性有机碳（DOC）以及不同深度土壤盐分、有机质和微生物生物量碳氮的影响，设置有机硅功能肥（WO）、颗粒状有机物料（YP）、粉末状有机物料（GG）、颗粒状有机物料和粉末状有机物料各50%（YG）以及不添加有机物料（CK）共5个处理。结果表明，有机物料的添加提高了渗滤液的EC值及水溶性Ca2+、Mg2+和Na+含量，YP处理的渗滤液盐基离子含量最高，而WO处理的渗滤液中DOC含量最低；与CK处理相比，WO处理显著提高各深度土层的水溶性Ca2+、Mg2+和K+含量，显著降低各深度土层的pH、交换性Na+、碱化度（ESP）和0—20 cm土层的水溶性Na+和钠吸附比（SAR），但其他有机物料的处理对pH、EC值和盐分等无显著影响；淋洗作用使表层土壤（0—20 cm）盐分向土壤深层移动，淋洗结束后，各处理的土壤EC值、水溶性总盐、交换性Na+和ESP随着土层深度的增加而升高；与CK处理相比，GG和YG处理显著提高0—20 cm土层的有机质含量，分别提高23.97%和20.53%。研究结果为有机物料的添加对盐碱地淋洗过程中盐分和有机质的变化提供了理论的数据参考。

Abstract

In this study

the effects of different organic materials on the salinity and dissolved organic carbon (DOC) of leachate and the salinity

organic matter and microbial carbon and nitrogen in different depths of soil were studied by soil column simulation test

including five different treatments: organic silicon functional fertilizer (WO)

particle organic materials (YP)

powder organic materials (GG)

50% particle organic materials and 50% powder organic materials mixed respectively (YG) and no organic materials (CK). The results showed that the addition of organic materials increased the EC value and water-soluble Ca2+

Mg2+ and Na+ concentration in the leachate. The contents of salt ions leached by YP treatment were the highest

but the content of DOC in the leachate treated by WO was the lowest. Compared with CK treatment

WO treatment significantly increased the water-soluble Ca2+

Mg2+ and K+ contents in each depth of soil layer

significantly reduced the pH

exchangeable Na+

exchangeable solium percentage (ESP) in each depth of soil layer

and water-soluble Na+

sodium absorption ratio (SAR) in 0—20 cm soil layer

but there was no significant difference in pH

EC and salinity between other organic materials and CK treatment. Leaching moved the soil salt from the surface (0—20 cm) to the deeper layers. After leaching

EC value

water-soluble total salt

exchangeable Na+ and ESP increased with the increase of soil depth. Compared with CK treatment

GG and YG treatment significantly increased the content of organic matter in 0—20 cm soil layer by 23.97% and 20.53%

respectively. These results could provide a theoretical data reference for the changes of salt and organic matter in the process of saline-alkali soil leaching with the addition of organic materials.

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