中国农业科学

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最新录用:宁夏土壤颗粒组成特点及其影响因素分析

周雷1,曲潇琳2,周涛3,马常宝4,李建兵1,龙怀玉1,徐爱国1,张认连1
  

  1. 1中国农业科学院农业资源与农业区划研究所,北京 1000812农业农村部耕地质量监测保护中心,北京1001253宁夏农林科学院农业资源与环境研究所,银川 7500024全国农业技术推广服务中心,北京 100125
  • 发布日期:2023-03-16

Analysis of the Characteristics and Influencing Factors of Soil Particle Composition in Ningxia

ZHOU Lei1, QUI XiaoLi2, ZHOU Tao3, MA ChangBao4, LI JianBin1, LONG HuaiYu1, XU AiGuo1, ZHANG RenLiang1 #br#   

  1. 1Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081; 2Cultivated Land Quality Monitoring and Protection, Ministry of Agriculture and Rural Affairs, Beijing 100125; 3Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry SciencesYinchuan 7500024National Agro-Tech Extension and Service Center, Beijing 100125
  • Online:2023-03-16

摘要: 【目的】明确宁夏地区土壤颗粒组成的特点及其影响因素,从而为当地的土地利用、农业生产规划等提供科学参考。【方法】根据114个点位的土壤颗粒组成测试数据,研究宁夏地区环境因素对土壤颗粒组成的影响,土壤颗粒组成、土壤质地类型、土壤控制层段颗粒大小的统计学特征,以及土壤颗粒组成的空间分布特征。【结果】(1)宁夏土壤的颗粒组成以砂粒和粉粒为主,土壤砂粒、粉粒和黏粒含量分别为2.4%—97.2%、0.8%—86.0%0.7%—43.3%,平均含量分别为34.9%、49.6%15.5%;土壤质地主要以粉壤土(占46.51%)、砂壤土(占17.61%)和壤土(占13.29%)为主,土壤质地类型变异主要归因于砂粒和粉粒含量的变化。(2)多个环境因素共同影响了宁夏地区土壤颗粒组成,影响力从大到小依次为地貌、母质、小地形、热量、土壤类型、土地利用类型和风速。(3)控制层段的颗粒大小有11种类型,以壤质(占46.5%)、黏壤质(占19.3%)、砂质(占16.7%)为主。(4)宁夏地区很难发育出黏化层,在114个剖面中有26个黏粒含量符合黏化层,但只有2个是确切的黏化层。(5)宁夏灌於表层产生了明显的质地分异。【结论】宁夏土壤颗粒组成以砂粒和粉粒为主,地貌和母质是影响土壤颗粒组成的最主要因素。


关键词: 土壤颗粒组成, 因素分析, 土壤质地, 黏化层诊断, 灌淤表层, 宁夏

Abstract: 【ObjectiveTo clarify the characteristics and influencing factors of soil particle composition in Ningxia, and provide scientific reference for local land use and agricultural production planning.MethodBased on the soil particle composition test data at 114 sites, the effects of environmental factors on soil particle composition, the statistical characteristics of soil particle composition, soil texture type, particle size of soil control layer, and the spatial distribution characteristics of soil particle composition in Ningxia were studied.Result(1) The contents of sand, silt and clay in Ningxia soil are 2.4%-97.2%, 0.8%-86.0% and 0.7%-43.3% respectively, and the average contents are 34.9%, 49.6% and 15.5% respectively; Soil texture is mainly composed of silty loam (46.51%), sandy loam (17.61%) and loam (13.29%), and the variation of soil texture types is mainly attributed to the change of sand and silt content. (2) A number of environmental factors jointly affect the soil particle composition in Ningxia, and the influential factors are geomorphic factors, parent material type factors, small topographic factors, thermal factors, soil type factors, land use type factors and wind speed factors in turn from large to small. (3) There are 11 types of particle sizes in the control interval, among which loamy (46.5%), clay (19.3%) and sandy (16.7%) are the main ones. (4) It is difficult to develop argic horizon in Ningxia. Among 114 sections, 26 clay particles are consistent with cohesive layer, but only 2 are exact argic horizon. (5) Siltigic epipedon of Ningxia produced obvious texture differentation.ConclusionThe soil particle composition in Ningxia is mainly sand and silt, landform and parent material are the most important factors affecting the particle composition.


Key words: soil particle composition, factor analysis, soil texture, diagnosis of argic horizon, siltigic epipedon, Ningxia