干湿交替程度对土壤速效养分的影响

张泽洲; 王冬梅; 李梦寻

doi:10.13870/j.cnki.stbcxb.2021.02.035

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干湿交替程度对土壤速效养分的影响

更新时间：2025-03-12

- 干湿交替程度对土壤速效养分的影响
- Effect of Drying-rewetting Intensity on Soil Nutrient Availability
- 水土保持学报 2021年35卷第2期页码：265-270
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
  
  [ "张泽洲(1995—),男,在读博士研究生,主要从事水土保持生态修复研究。E-mail:zezhou1995@163.com" ]
- 基金信息：
  
  国家“十二五”科技支撑计划项目（2012BAC16B03）宁夏回族自治区水利厅科技项目（2012-69）
- DOI：10.13870/j.cnki.stbcxb.2021.02.035
  中图分类号： S153.6
- 纸质出版：2021
- 稿件说明：
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张泽洲, 王冬梅, 李梦寻. 干湿交替程度对土壤速效养分的影响[J]. 水土保持学报, 2021,35(2):265-270.

ZHANG Zezhou, WANG Dongmei, LI Mengxun. Effect of Drying-rewetting Intensity on Soil Nutrient Availability[J]. 2021, 35(2): 265-270.
张泽洲, 王冬梅, 李梦寻. 干湿交替程度对土壤速效养分的影响[J]. 水土保持学报, 2021,35(2):265-270. DOI： 10.13870/j.cnki.stbcxb.2021.02.035.

ZHANG Zezhou, WANG Dongmei, LI Mengxun. Effect of Drying-rewetting Intensity on Soil Nutrient Availability[J]. 2021, 35(2): 265-270. DOI： 10.13870/j.cnki.stbcxb.2021.02.035.

摘要

降雨和灌溉引起的干湿交替显著影响土壤速效养分的转化和迁移。为了探究干湿交替程度对土壤速效养分的影响，采用室内模拟干湿交替试验，设置轻度（DW1，复水至60% WHC）、中度（DW2，复水至45% WHC）、重度（DW3，复水至30% WHC） 3种干湿交替程度，并以恒湿处理（CM，恒定60% WHC）为对照，探究试验前后土壤pH、水溶性有机碳（dissolved organic carbon， DOC）、铵态氮、硝态氮、速效磷及速效钾的变化。结果表明：DW1土壤pH比其他各组低0.25~0.45，其余各组间差异不显著；培养后CM组DOC下降20.01%，DW组下降37.04%~41.36%，不同程度干湿交替处理间差异不显著。土壤铵态氮含量在培养后下降18.19%~42.02%，各处理间表现为DW3>DW2>DW1；土壤硝态氮含量较培养前急剧增长，表现为DW1>DW2>DW3，DW2的铵态氮和硝态氮含量与CM组基本一致。土壤速效钾和速效磷培养前后变化不大，但DW2速效磷含量较其他各处理减少2.93~4.00 mg/kg，而DW3的速效钾含量较其他各处理减少3.69~14.72 mg/kg。干湿交替显著降低土壤DOC和铵态氮含量，增加土壤硝态氮含量，对土壤pH、速效磷、速效钾影响不大。干湿交替程度的增强能提高土壤pH，促进铵态氮的产生，抑制硝态氮和速效钾的生成，但对DOC和速效磷影响不大。

Abstract

Drying and rewetting cycles caused by rainfall and irrigation influence the availability of soil nutrient. In order to estimate the effects of drying-rewetting intensity on nutrient availability

three moisture treatments (rewetting to 60%

45% and 30% WHC) were designed in this study compared with a constantly moist control (CM

60% WHC during the whole incubation period). The pH of DW1 (rewetting to 60% WHC) was 0.25~0.45 lower than other treatments while the differences among other treatments were not significant. After incubation

the DOC in CM decreased by 20.01%

while decreased by 37.04%~41.36% in drying-rewetting treatments

and there were no significant differences among different intensities. The ammonium nitrogen decreased by 18.19%~42.02% in the drying-rewetting treatments

but the reduction came down with the increasing intensity. The nitrate nitrogen increased sharply in each treatment but the increase came down with the increasing intensity. The ammonium nitrogen and nitrate nitrogen in DW2 (rewetting to 45% WHC) were consistent with CM. Available P and available K had little change after the incubation

but available P in DW2 was lower than other treatments as well as available K in DW3 (rewetting to 30% WHC). Drying-rewetting cycles led to a reduction of DOC and ammonium nitrogen and an increase of nitrate nitrogen but had little effect on pH

available P and available K. Following the growth of drying-rewetting intensity

soil pH and ammonium nitrogen gradually increased

while nitrate nitrogen and available K decreased.

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references

Tian L M, Zhao L, Wu X D, et al. Variations in soil nutrient availability across Tibetan grassland from the 1980s to 2010s[J].Geoderma,2019,338:197-205.

李梦寻,王冬梅,任远,等.不同干湿交替频率对土壤速效养分、水溶性有机碳的影响[J].生态学报,2018,38(5):1542-1549.

Kaiser M, Kleber M, Berhe A A. How air-drying and rewetting modify soil organic matter characteristics:An assessment to improve data interpretation and inference[J].Soil Biology and Biochemistry,2015,80:324-340.

Shi A D, Marschner P. Drying and rewetting frequency influences cumulative respiration and its distribution over time in two soils with contrasting management[J].Soil Biology and Biochemistry,2014,72:172-179.

Zhao Y, Maio M D, Vidotto F, et al. Influence of wet-dry cycles on the temporal infiltration dynamic in temperate rice paddies[J].Soil and Tillage Research,2015,154:14-21.

Chowdhury N, Nakatani A S, Setia R, et al. Microbial activity and community composition in saline and non-saline soils exposed to multiple drying and rewetting events[J].Plant and Soil,2011,348(1/2):103-113.

Unger S, Máguas C, Pereira J S, et al. The influence of precipitation pulses on soil respiration-Assessing the "Birch effect" by stable carbon isotopes[J].Soil Biology and Biochemistry,2010,42(10):1800-1810.

Harrison-Kirk T, Beare M H, Meenken E D, et al. Soil organic matter and texture affect responses to dry/wet cycles:Effects on carbon dioxide and nitrous oxide emissions[J].Soil Biology and Biochemistry,2013,57:43-55.

Navarro-García F, Casermeiro M Á, Schimel J P. When structure means conservation:Effect of aggregate structure in controlling microbial responses to rewetting events[J].Soil Biology and Biochemistry,2012,44(1):1-8.

Bravo-Garza M R, Voroney P, Bryan R B. Particulate organic matter in water stable aggregates formed after the addition of

C-labeled maize residues and wetting and drying cycles in vertisols[J].Soil Biology and Biochemistry,2010,42(6):953-959.

Beare M H, Gregorich E G, St-Georges P. Compaction effects on CO

and N

O production during drying and rewetting of soil[J].Soil Biology and Biochemistry,2009,41(3):611-621.

Fierer N, Schimel J P. Effects of drying-rewetting frequency on soil carbon and nitrogen transformations[J].Soil Biology and Biochemistry,2002,34(6):777-787.

Hsiao T C. Plant responses to water stress[J].Plant Physiology,1973,24(5):519-570.

Muhr J, Franke J, Borken W. Drying-rewetting events reduce C and N losses from a Norway spruce forest floor[J].Soil Biology and Biochemistry,2010,42(8):1303-1312.

Lopez-Sangil L, Rovira P, Casals P. Decay and vertical reallocation of organic C, and its incorporation into carbonates, in agricultural soil horizons at two different depths and rewetting frequencies[J].Soil Biology and Biochemistry,2013,61:33-44.

Dinh M, Guhr A, Weig A R, et al. Drying and rewetting of forest floors:Dynamics of soluble phosphorus, microbial biomass-phosphorus, and the composition of microbial communities[J].Biology and Fertility of Soils,2018,54(6):761-768.

Yao S, Zhang B, Hu F. Soil biophysical controls over rice straw decomposition and sequestration in soil:The effects of drying intensity and frequency of drying and wetting cycles[J].Soil Biology and Biochemistry,2011,43(3):590-599.

Morillas L, Durán J, rodríguez A, et al. Nitrogen supply modulates the effect of changes in drying-rewetting frequency on soil C and N cycling and greenhouse gas exchange[J].Global Change Biology,2015,21(10):3854-3863.

Rupp H, Meissner R, Leinweber P. Plant available phosphorus in soil as predictor for the leaching potential:Insights from long-term lysimeter studies[J].Ambio,2018,47:103-113.

Alamgir M, Marschner P. Short-term effects of application of different rates of inorganic P and residue P on soil P pools and wheat growth[J].Journal of Plant Nutrition and Soil Science,2013,176(5):696-702.

Richardson A E, Simpson R J. Soil microorganisms mediating phosphorus availability update on microbial phosphorus[J].Plant Physiology,2011,156(3):989-996.

王光火,朱祖祥.pH对土壤吸持磷酸根的影响及其原因[J].土壤学报,1991,28(1):1-6.

姜子绍,宇万太.农田生态系统中钾循环研究进展[J].应用生态学报,2006,17(3):3545-3550.

丛日环,李小坤,鲁剑巍,等.不同水分状况对红壤和黄褐土速效钾含量的影响[J].植物营养与肥料学报,2009,15(5):1072-1077.

Z rb C, Senbayram M, Peiter E. Potassium in agriculture-Status and perspectives[J].Journal of Plant Physiology,2014,171(9):656-669.

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