不同措施对河套灌区重度盐渍土改良效果

张宇晨; 红梅; 赵巴音那木拉; 常菲; 李艳勤; 温馨

doi:10.13870/j.cnki.stbcxb.2019.05.045

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不同措施对河套灌区重度盐渍土改良效果

更新时间：2025-03-12

- 不同措施对河套灌区重度盐渍土改良效果
- Effects of Different Measures on the Improvement of Severe Saline Soil in Hetao Irrigation Area
- 水土保持学报 2019年33卷第5期页码：309-315
- 作者机构：
  
  内蒙古农业大学草原与资源环境学院, 内蒙古自治区土壤质量与养分资源重点实验室,呼和浩特,010018
- 作者简介：
  
  [ "张宇晨(1994-),男,在读硕士研究生,主要从事土壤资源利用与保护研究。E-mail:840196161@qq.com" ]
- 基金信息：
  
  国家重点研发计划项目（2016YFC0501300）
- DOI：10.13870/j.cnki.stbcxb.2019.05.045
  中图分类号：
- 纸质出版：2019
- 稿件说明：
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张宇晨, 红梅, 赵巴音那木拉, 等. 不同措施对河套灌区重度盐渍土改良效果[J]. 水土保持学报, 2019,33(5):309-315.

ZHANG Yuchen, HONG Mei, ZHAO Bayinnamula, et al. Effects of Different Measures on the Improvement of Severe Saline Soil in Hetao Irrigation Area[J]. 2019, 33(5): 309-315.
张宇晨, 红梅, 赵巴音那木拉, 等. 不同措施对河套灌区重度盐渍土改良效果[J]. 水土保持学报, 2019,33(5):309-315. DOI： 10.13870/j.cnki.stbcxb.2019.05.045.

ZHANG Yuchen, HONG Mei, ZHAO Bayinnamula, et al. Effects of Different Measures on the Improvement of Severe Saline Soil in Hetao Irrigation Area[J]. 2019, 33(5): 309-315. DOI： 10.13870/j.cnki.stbcxb.2019.05.045.

摘要

为了探究不同灌溉模式施加不同改良剂对河套灌区重度盐渍土的改良效果，设置秸秆深埋（SL）、石膏+有机肥（SF）、对照（CK）3个处理，对河套灌区重度盐渍土土壤盐分在0-70 cm剖面上的分布特点进行研究。结果表明：不同灌溉模式，SL和SF处理在0-15 cm土层均有效降低土壤pH，随改良时间延长改良深度增加pH持续降低，有一定的长效性，滴灌SL与SF处理pH较CK分别下降0.35，0.49，黄灌下降0.42，1.33，对30-70 cm土层影响较小。SF处理碱化度第2年下降达43%，SL处理为40%，滴灌更利于碱化度降低。从抑制盐分积累来看，SL与SF处理能有效抑制盐分0-15 cm土层聚集，黄灌SL与SF处理较CK分别下降13.60%，7.70%，滴灌分别下降31.60%，6.90%，SL处理抑盐效果较显著。土壤盐基离子表明，不同灌溉模式，SL与SF处理均显著降低0-15 cm土层Na+与HCO3-的含量，滴灌降低比例高于黄灌，随着改良时间延长效果越显著，15-70 cm土层无明显变化。石膏加有机肥的施入提高0-70 cm土层SO42-、Ca2+及Cl-的含量。通过对比分析，对河套灌区重度盐渍土治理而言，秸秆深埋和石膏+有机肥均能有效抑制重度盐渍土土壤积盐，有效降低pH及碱化度。整体来看，滴灌模式下石膏+有机肥改良效果优于秸秆深埋。

Abstract

In order to explore the effects of different irrigation modes on the improvement of severe saline soil in Hetao Irrigation District

this experiment set up three treatments of straw deep burial (SL)

gypsum + organic fertilizer (SF) and control (CK)

and the distribution characteristics of soil salinity in the 0-70 cm profile of the soil were studied. The results showed that under different irrigation patterns

SL and SF effectively reduced soil pH in 0-15 cm soil layer

the pH decreased continuously with the extension of the treatment time and the increasing of improvement depth. Compared with CK

the pH of SL and SF under drip irrigation decreased by 0.35 and 0.49

respectively

and that of SL and SF under yellow river irrigation decreased by 0.42 and 1.33

respectively

while irrigation mode had little effect on 30-70 cm soil layer. The alkalinity of SF decreased by 43% in the second year and that of SL decreased by 40%

drip irrigation was beneficial to the reduction of alkalinity. In terms of inhibiting salt accumulation

SL and SF could effectively inhibit the aggregation of salt in 0-15 cm soil layer. Compared with CK

the salt of SL and SF under yellow river irrigation decreased by 13.60% and 7.70%

respectively

and that under drip irrigation decreased by 31.60% and 6.90%

respectively. SL had significant salt inhibition effect. The soil salt-based ions showed that the SL and SF significantly reduced the contents of Na+ and HCO3- in 0-15 cm soil layer under different irrigation modes

the reduction ratio of drip irrigation was higher than that of yellow river irrigation

and the effect was more obvious with the extension of the improvement time. While there was no significant change in 15-70 cm soil layer. The application of gypsum and organic fertilizer increased the contents of SO42-

Ca2+ and Cl-in 0-70 cm soil layer. Through comparative analysis

for the treatment of severe saline soil in Hetao Irrigation Area

both deep burying and gypsum + organic fertilizer could effectively inhibit salt accumulation in severe saline soil

reduce pH and alkalinity. Overall

the improvement effect of gypsum+ organic fertilizer under drip irrigation mode was better than the deep straw burial.

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