不同肥力水平的土壤紧实度与含水量的相关度分析  

Correlation of Soil Compactness and Water Content Under Different Fertility Levels

作　　者：徐爽 阚雨晨 XU Shuang;KAN Yuchen(Hanzhong Vocational and Technical College,Hanzhong,Shaanxi 723000;Shanghai Lvle Bio-tech Co.,Ltd.,Shanghai 201108)

机构地区：[1]汉中职业技术学院,陕西汉中723000 [2]上海绿乐生物科技有限公司,上海201108

出　　处：《中国农学通报》2022年第36期94-100,共7页Chinese Agricultural Science Bulletin

基　　金：陕西省教育厅2020年科学研究计划项目“食用菌菌糠应用于消除土壤疲劳症的方法研究”(20JK0493)。

摘　　要：为探讨不同肥力条件下土壤紧实度值对含水量的依赖程度,选择质地相同肥力不同的3个田块监测土壤紧实度和实时含水量,分析不同肥力水平土壤的紧实度与含水量的相关程度,揭示不同肥力水平的土壤条件下,土壤紧实度对含水量依赖程度的差异。结果表明:0~25 cm土层范围内,同一田块各土层之间的土壤紧实度对含水量的依赖程度没有显著差异;但在土壤质地相同、肥力条件不同的情况下,土壤含水量对土壤紧实度影响的强弱程度存在明显差异,表现为土壤肥力越低,土壤紧实度对含水量的依赖程度越强。研究表明,在土壤健康评价过程中,当土壤肥力条件较好时,可以适当降低土壤水分对紧实度影响的权重水平,而肥力条件差的土壤,在对土壤紧实度进行拟合时,应充分考虑土壤水分条件的影响。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.

关 键 词：土壤紧实度 土壤含水量 土壤肥力 时间变异 空间变异 相关度 

分 类 号：S152[农业科学—土壤学]