Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (29): 71-77.doi: 10.11924/j.issn.1000-6850.casb2021-0447

Special Issue: 耕地保护

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Spatial Distribution Characteristics and Influencing Factors of Exchangeable Magnesium Content in Cultivated Land of Sanming City

Fan Mingfeng1,2()   

  1. 1Soil and Fertilizer Technology Station of Sanming City, Sanming Fujian 365000
    2Fujian University Engineering Research Center of Cleaner Production Technology in Sanming University, Sanming FuJian 365000
  • Received:2021-04-27 Revised:2021-07-08 Online:2021-10-15 Published:2021-10-29

Abstract:

To find out the spatial distribution characteristics and influencing factors of exchangeable magnesium content in cultivated soil in Sanming City, based on the test results and related data of 4833 soil samples, the spatial distribution characteristics and influencing factors of exchangeable magnesium content in cultivated land soil in Sanming City were analyzed by statistical and geographical statistical methods. The results showed that the exchangeable magnesium average content of cultivated land soil samples in Sanming City was at medium level, and the average value was 62.7 mg/kg. The difference of exchangeable magnesium average content in soil samples from different counties (cities or districts) reached significant level. The proportion of samples with deficiency exchangeable magnesium content and arable land with deficiency exchangeable magnesium content accounted for 44.15% and 40.72%, respectively. Except that the difference of exchangeable magnesium content by soil type grouping was not significant, the differences of the soil exchangeable magnesium content by the other influencing factors grouping were significant. Therefore, applying organic fertilizer, adjusting soil pH, improving sandy soil texture and supplementing magnesium fertilizer could be the main measures to control soil exchangeable magnesium content in Sanming City.

Key words: Sanming City, cultivated soil, soil exchangeable magnesium, spatial distribution, influencing factors

CLC Number: