北方农业学报 ›› 2020, Vol. 48 ›› Issue (6): 62-67.doi: 10.12190/j.issn.2096-1197.2020.06.10

• 土壤肥料·节水灌溉 • 上一篇    下一篇

荒漠草原药用植物生境土壤养分与土壤粒径分析

陈红霞, 包翔, 刘果厚, 兰庆   

  1. 内蒙古农业大学草原与资源环境学院/内蒙古自治区土壤质量与养分资源重点实验室,内蒙古呼和浩特 010011
  • 收稿日期:2020-10-12 出版日期:2020-12-20 发布日期:2021-02-04
  • 通讯作者: 包翔(1962—),男,副教授,博士,主要从事草原土壤利用与保护等方面的教学与研究工作。
  • 作者简介:陈红霞(1994—),女,硕士研究生,研究方向为草原土壤利用与保护。
  • 基金资助:
    中央财政专项项目

Analysis of soil nutrients and soil particle size characteristics of medicinal plants habitat in desert steppe

CHEN Hongxia, BAO Xiang, LIU Guohou, LAN Qing   

  1. College of Grassland,Resources and Env ironment,Inner Mongolia Agricultural University/Key Laboratory of Soil Quality and Nutrient Resources in Inner Mongolia Autonomous Region ,Hohhot 010011 ,China
  • Received:2020-10-12 Online:2020-12-20 Published:2021-02-04

摘要: 【目的】 明确荒漠草原地区药用植物适生土壤环境及生长发育过程对土壤结构的影响。【方法】 以荒漠草原地区苦豆子、牛心朴子、香青兰生长土壤为研究对象,对土壤速效养分、pH值、土壤粒径分形维数进行分析。【结果】 3种药用植物苦豆子、牛心朴子、香青兰生长土壤pH值为9.11~10.35,碱解氮含量分别为5.13、2.37 .7.10 mg/kg,速效磷含量分别为3.05、6.74、3.13 mg/kg,速效钾含量分别为114.52、117.48、181.69 mg/kg;砂粒含量分别为83.41% .87.29%、84.77%。各药用植物生长土壤粒径曲线均为双峰型,牛心朴子生长土壤在1 000μm处具有最高值。0~10cm土层牛心朴子生长土壤均匀度较好,10~20、20~30cm土层香青兰生长土壤均匀度较好。【结论】 苦豆子、牛心朴子、香青兰适宜生长于碱性土壤环境,土壤质地为砂土,土壤速效钾含量较高,其他速效养分含量低于适宜水平。牛心朴子生长土壤颗粒粗大,土壤颗粒有粗粒化的趋势,存在沙化的威胁。

关键词: 荒漠草原, 药用植物, 土壤粒径, 土壤养分

Abstract: 【Objective】To clarify the influence of suitable soil environment and growth process of medicinal plants on soil structure in desert steppe area. 【Methods】Taking the growing soil of Sophora alopecuroides L. ,Manc hurian hancock (Maxim)Al. and Dracocephalum moldawica L. as the research object in the desert steppe area ,the soil available nutrients ,pH, soil particle size and fractal dimensions and their correlation were analyzed.【Results】The pH of the growing soil of the three medicinal plants Sophora alopec uroides L. , Manchurian hancock (Maxim.)Al. and Dracocephalum moldawica L. was 9.11-10.35,the content of alkali hydrolyzed nitrogen was 5.13,2.37,7.10 mg/kg , the content of available phosphorus was 3.05,6.74,3.13 mg/kg, and the content of available potassium was 114.52,117.48, 181.69 mg/kg;sand content was 83.41%,87.29% ,84.77% ,respectively. The growth soil particle size curve of various medicinal plants were bimodal ,and the growth soil of Manchurian hancock (Maxim.)AI. had the highest value at 1 000 μm. The 0-10 cm soil layer had better soil uniformity for the growth of Manc hurian hancock (Maxim.)Al. and the soil uniformity for the growth of Dracocephalum moldwicaL. 10- 20 cm and 20 -30 cm soil layer was better. 【Conclusion】Sophora alopecuroides L,Manchurian hancock (Maxim)AL,and Dracocephalum moldaw ica L. are suitable for growth in alkaline soil environment ,sandy soil, higher soil available potassium content, and the content of other available nutrients is lower than the appropriate level. Manchurian hancock (Maxim.)Al. grows with coarse soil particles. The soil particles has a tendency of coarsening and there is a threat of further desertification.

Key words: Desert steppe, Medicinal plant, Soil particle size, Soil nutrients

中图分类号: 

  • S567