Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth

GAO Weiqiang; ZHANG Tibin; TONG Jiankang; LIU Zhenyuan; LIANG Qing; KUANG Yuxin; CHENG Yu; FENG Hao

doi:10.13870/j.cnki.stbcxb.2024.06.007

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Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth

更新时间：2025-02-18

- Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth
- Vol. 38, Issue 6, Pages: 372-380(2024)
- 作者机构：
  
  1. 西北农林科技大学旱区农业水土工程教育部重点实验室, 陕西杨凌,712100
  2. 西北农林科技大学水利与建筑工程学院, 陕西杨凌,712100
  3. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  4. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2024.06.007
  CLC： S273.2;S512.1
- Published：2024
- 稿件说明：
移动端阅览
GAO Weiqiang, ZHANG Tibin, TONG Jiankang, et al. Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth[J]. 2024, 38(6): 372-380.
DOI：

GAO Weiqiang, ZHANG Tibin, TONG Jiankang, et al. Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth[J]. 2024, 38(6): 372-380. DOI： 10.13870/j.cnki.stbcxb.2024.06.007.

摘要

[目的] 研究微咸水灌溉对土壤水盐特性和作物生长的影响

有助于指导微咸水的安全利用。[方法] 在遮雨条件下开展冬小麦盆栽试验

以去离子水作为对照(CK)

设置电导率为4 dS/m

钠钾比为1∶0(T1)

1∶1(T2)

0∶1(T3)的3种微咸水水质处理

研究土壤水盐特性

冬小麦光合生理、生长发育和产量形成。[结果] 与CK相比

T1、T2、T3微咸水灌溉下0—40 cm土层土壤含水率分别增加19%

14%(p<0.05)

土壤EC1∶5(土水比1∶5浸提液电导率)和Na+、K+浓度随着冬小麦生育期持续增加

T1、T2、T3处理0—40 cm土层土壤盐分分别增加252%

223%

234%(p<0.05)

且盐分大部分积累在10—20 cm土层。与CK相比

T1处理的冬小麦净光合速率显著降低16%(p<0.05)

而T2、T3处理与CK相比无显著性差异(p>0.05)。T2处理提升冬小麦的株高、单株叶面积和地上部干物质量

与CK相比产量增加8.41%(p<0.05);而各处理地下部干物质量之间没有显著差异(p>0.05)。[结论] 利用4 dS/m微咸水灌溉改变土壤原有水盐特性

使盐分积累在土壤中

短期内对冬小麦生长有一定促进作用。在本研究中

使用钠钾比为1∶1的微咸水对冬小麦生长和产量提升效果更好。研究结果可为微咸水可持续利用提供理论依据。

Abstract

[Objective] To study the effects of brackish water irrigation on soil water and salt characteristics and crop growth is helpful to guide the safe utilization of brackish water. [Methods] A pot experiment of winter wheat was carried out under the condition of rain-shielding. Deionized water was used as the control (CK). Three kinds of brackish water treatments with conductivity of 4 dS/m and different sodium-potassium ratios were set up

including sodium-potassium ratio of 1∶0 (T1)

sodium-potassium ratio of 1∶1 (T2)

sodium-potassium ratio of 0∶1 (T3). The water-salt characteristics of the soil

the photosynthetic physiology

growth and development as well as yield formation of winter wheat were studied. [Results] Compared with CK

the 0-40 cm soil moisture content under T1

T2 and T3 brackish water irrigation increased by 19%

8% and 14% (p<0.05)

respectively. Soil EC1∶5 (soil water ratio 1∶5 extract conductivity) and Na+ and K+ concentrations continued to increase with the growth period of winter wheat. The 0-40 cm soil salinity of T1

T2 and T3 treatments increased by 252%

223% and 234% (p<0.05)

respectively

and most of the salt accumulated in the 10-20 cm soil layer. The net photosynthetic rate of winter wheat was significantly reduced (by 16%

p<0.05) in the T1 treatment compared to CK

while there was no significant differences (p>0.05) between the T2 and T3 treatments and CK. The T2 treatment enhanced plant height

leaf area per plant and aboveground dry matter mass of winter wheat

and increased the yield by 8.41% (p<0.05) compared to CK; while there was no significant difference in underground dry matter mass among treatments (p>0.05). [Conclusion] In summary

irrigation using 4 dS/m brackish water changed the original water-salt characteristics of the soil

caused salts to accumulate in the soil and promoted winter wheat growth in the short term. In this study

the use of brackish water with a sodium-potassium ratio of 1∶1 had a better effect on winter wheat growth and yield enhancement. The results can provide a theoretical basis for sustainable utilization of brackish water.

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Keywords

references

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