Welcome to visit Geoscience!

Geoscience ›› 2024, Vol. 38 ›› Issue (03): 764-774.DOI: 10.19657/j.geoscience.1000-8527.2024.046

• Observational Simulation and Comprehensive Evaluation of Geochemical Processes of Land and Water Resources • Previous Articles     Next Articles

A Study on the Availability of Topsoil Nutrient Elements of the Cultivated Land in Tongzi County, Guizhou Province

PAN Youliang1,2(), WANG Xiaohong2(), FEI Guangchun1, YANG Enlin3, XIAO Yu2, ZHANG Zhonghua2   

  1. 1. College of Earth Science, Chengdu University of Technology, Chengdu, Sichuan 610059, China
    2. 117 Geological Party, Guizhou Bureau of Geology and Mineral Exploration & Development, Guiyang, Guizhou 550018, China
    3. School of Geography and Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China
  • Online:2024-06-10 Published:2024-07-04

Abstract:

The study on the availability and influencing factors of nutrient elements in topsoil in Tongzi County, Guizhou Province provides a scie.pngic basis for managing the cultivated land resources and development of modern agriculture.The nutrient elements were analyzed using available topsoil state samples from the geochemical survey of land quality in Tongzi County.We further discussed the content, spatial distribution, grade status, and influencing factors of these nutrient elements.The study results show that the total content of the topsoil nutrient elements in the cultivated land is generally rich.Total boron, molybdenum, and zinc are relatively ri-cher, accounting for 56.34%, 65.49%, and 77.96% of the total sample, respectively.Total nitrogen is gene-rally rich, accounting for 41.16%, and total phosphorus is generally low, accounting for 32.23%.However, the available content of topsoil nutrient elements is relatively lower.The available phosphorus and molybdenum are relatively lower, accounting for 46.05% and 30.14%, respectively.The available boron and potassium are generally low, accounting for 64.66% and 50.94%, respectively, and the available zinc is generally rich, accounting for 50.83%.The total nutrient elements are the primary impacting factor for the available content in the topsoil of the study area, and the available nutrient elements can be influenced by the surficial geochemical properties and soil physicochemical properties, of which the variability of the topsoil nutrient elements in different geological units, soil types, and utilization types is significant.Moreover, increasing the cation exchange capacity can promote the conversion of available nutrient elements, and increasing the organic matters in topsoil can increase the availability of nutrient elements.

Key words: geochemical survey, cultivated land quality, soil nutrient, available content, Tongzi County

CLC Number: