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Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (36): 94-100.doi: 10.11924/j.issn.1000-6850.casb2021-1223

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Correlation of Soil Compactness and Water Content Under Different Fertility Levels

XU Shuang1(), KAN Yuchen2   

  1. 1Hanzhong Vocational and Technical College, Hanzhong, Shaanxi 723000
    2Shanghai Lvle Bio-tech Co., Ltd., Shanghai 201108
  • Received:2021-12-26 Revised:2022-02-06 Online:2022-12-25 Published:2023-01-17

Abstract:

To explore the dependence degree of soil compactness value on water content under different fertility levels, three fields with same texture and different fertility levels were selected to monitor soil compactness and real-time water content, analyze the correlation degree between soil compactness and water content and reveal the dependence degree of soil compactness on water content under different fertility levels. The results showed that in the 0-25 cm soil depth, there was no significant difference of the dependence degree of soil compactness on water content among the soil layers in the same field. But under the condition of same soil texture and different fertility levels, the influence of soil water content on soil compactness was obviously different, the lower the soil fertility, the stronger the dependence degree. In the process of soil health evaluation, for soils with better fertility condition, the weighting of the influence of soil moisture on compactness could be appropriately reduced; while for soils with poor fertility condition, full consideration should be given to the influence of soil moisture condition when fitting the soil compactness.

Key words: soil compactness, soil water content, soil fertility, temporal variation, spatial variation, correlation degree