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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (5): 38-42.doi: 10.11924/j.issn.1000-6850.casb2020-0070

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Salinity Characteristics Analysis of Saline Alkali Soil in Yinbei Irrigation District of Ningxia

Guo Juncheng(), Wang Mingguo, Geng Rong, Li Xin, Yin Xuehong, Wei Guning   

  1. Ningxia Agricultural Technology Extension Station, Yinchuan 750001
  • Received:2020-05-06 Revised:2020-07-27 Online:2021-02-15 Published:2021-02-25

Abstract:

To find out the main ions of salinization in Yinbei irrigation area of Ningxia, soil salinization characteristics were studied to provide a theoretical basis for improving salinized farmland. The method of correlation analysis and principal component analysis were used. The results showed that the surface accumulation was obvious in spring, and had strong spatial difference. The total salt content had a significant correlation with SO42-, Cl-, Ca2+, Mg2+, Na+ and K+ in 0-20 cm of the soil depth, the main harmful ion was Cl-, Na+and Mg2+, and the type of salinization was mainly chlorinated salinized soil. The total salt content had a significant correlation with K+, Cl- and SO42-, which were also the main harmful ions in 20-50 cm soil, and the type of salinization was mainly chlorinated salinized soil and sulfuric acid saline soil.

Key words: Yinbei irrigation district of Ningxia, saline alkali land, salinity characteristics, correlation analysis, principal component analysis

CLC Number: