[1]JING Yupeng,LI Yuejin,GAO Wa,et al.Salt Characteristics of Saline-Alkali Soil in Hetao Plain with Different Utilization Methods[J].Research of Soil and Water Conservation,2020,27(01):372-379.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
372-379
Column:
Public date:
2020-02-20
- Title:
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Salt Characteristics of Saline-Alkali Soil in Hetao Plain with Different Utilization Methods
- Author(s):
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JING Yupeng1,2, LI Yuejin1, GAO Wa1,3, LIN Yali4 LI Xiuping2, WANG Wenxi2, ZHANG Xinxin2, DI Caixia2
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(1.College of Grassland, Resources and Enviroment, Inner Mongolia Agricultural Unversity, Hohhot 010018,China; 2.Institute of Resources Environment and Detection Technology, Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences, Hohhot 010031, China; 3.Inner Mongolia Soil and Fertilizer Work Station, Hohhot 010011, China; 4.Balasu Region Agricultural Technical Extension Station in Yuyang District, Yulin, Shaanxi 719000, China)
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- Keywords:
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saline-alkali soil; soil salt characteristics; different utilization patterns; Hetao Plain
- CLC:
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S156.4
- DOI:
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- Abstract:
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In order to explore the effect of land use patterns on salt characteristics of saline-alkali soil, the soils under five utilization modes(saline-alkali wasteland, improved land, pastoral grassland, agricultural land and forest land)in Hetao Plain were taken as the research samples. The variation of total salt content, salt profile type and salt ion composition in soil profile was studied by means of field sampling and indoor analysis. The results showed that SO2-4, HCO-3, Ca2+, K++Na+ were the main salt ions in the soils in the study area, the distribution of salt ions in the soil profile was uneven with moderate and strong variability, and the contents of the ions decreased in the order: SO2-4>HCO-3>Ca2+>Na++K+>Mg2+>Cl->CO2-3; Changes of soil salt contents were basically consistent with those of Ca2+, Mg2+ and SO2-4, the ion contents decreased with the increase of soil depth. The effects of land use patterns on soil total salt content and its ion composition were significant. Total contents of salts of wasteland and improved land decreased with the increase of soil depth, and Total contents of salts of agricultural land increased with the increase of soil depth. The soil total salt content of forest land increased at first and then decreased with the increase of soil depth, and the average total salt content of soil profile(0—100 cm)decreased in the order: saline-alkali wasteland>improved land>pastoral grassland>agricultural land>forest land, the salt content of soil were reduced by 41.92% to 79.33% due to human activities, and the salt type changed from soda chloride type to soda sulfate type, which reduced the harm of salt and alkali. The total salt contents of different utilization methods were positively correlated with SO2-4, CO2-3, HCO-3, Ca2+, Mg2+, K++ Na+, but inversely proportional to Cl-. The conclusions of this study can provide scientific basis for improving the utilization potential of salinized land and are of great theoretical and practical significance to provide scientific basis for the extreme utilization of cultivated land reserve resources.