四川农业大学学报 ›› 2018, Vol. 36 ›› Issue (05): 658-664.doi: 10.16036/j.issn.1000-2650.2018.05.013

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石漠化治理区主栽经果林地土壤肥力诊断与评价

肖杰, 刘子琦*, 李开萍, 文雅琴, 陈海   

  1. 贵州师范大学喀斯特研究院/国家喀斯特石漠化防治工程技术研究中心,贵阳 550001
  • 收稿日期:2018-03-07 出版日期:2018-10-28 发布日期:2021-03-01
  • 通讯作者: 刘子琦, 博士, 副教授, 主要从事喀斯特地貌演化, 石漠化治理与监测评价研究, E-mail:124294329@qq.com。
  • 作者简介:肖杰,硕士生。
  • 基金资助:
    国家自然科学基金项目“石漠化地区二元水文结构水土-养分流失机制研究”(41761104);贵州省研究生教育创新计划项目“贵州省熊康宁喀斯特环境研究生导师工作室建设”(黔教研合GZS字[2016]04号)。

Diagnosis and Evaluation of Soil Fertility in Economic Fruit Forests of Rocky Desertification Control Area

XIAO Jie, LIU Ziqi*, LI Kaiping, WEN Yaqin, CHEN Hai   

  1. School of Karst Sciences/State Engineering Technology Institute for Karst Decertification Control, Guizhou Normal University, Guiyang 550001, China
  • Received:2018-03-07 Online:2018-10-28 Published:2021-03-01

摘要: 【目的】探明贵州石漠化治理区刺梨与核桃经果林地土壤肥力的丰缺现状,可以为当地石漠化治理区合理林地经营和科学施肥提供参考依据。【方法】利用改进后的内梅罗综合指数法,对石漠化治理区主栽品种刺梨和核桃两类林地的土壤肥力进行研究。选取土壤的pH值、有机质、全氮、全磷、全钾、碱解氮、速效磷、速效钾8个指标,对土壤养分进行分析,并参照全国第二次土壤普查分级标准对土壤肥力进行综合评价与因子分析。【结果】石漠化治理区两类林地土壤综合肥力系数变幅为1.36~1.49之间,总体上土壤肥力属一般水平,以土壤全氮、有机质和速效磷为两类林地土壤肥力组成的重要影响因子,而土壤全钾和速效钾为两类林地土壤的限制性因子。【结论】两类林地的土壤肥力保持较为一般,仍有进一步优化上升的空间。钾素的缺乏可能成为贵州石漠化治理区刺梨和核桃两类林地土壤质量提高的限制性因子,应有针对性地补充含钾素的有机肥料。

关键词: 石漠化, 土壤肥力, 诊断, 评价

Abstract: 【Objective】 The objective of this study was to explore the status of soil fertility of economic fruit forests dominated by Rosaroxbunghii and Juglans regia in the Guizhou desertification control area and to provide a reference for scientific fertilization of rational forest management in the local desertification control area. 【Method】 Soil fertility of economic fruit forests mainly planted with Rosaroxbunghii and Juglans regia in the rocky desertification control area was evaluated using improved Nemerow index method. Eight factors were analyzed in this study,such as soil pH,organic matter, total nitrogen,total phosphorus, total potassium, available nitrogen,available phosphorus and available potassium and soil nutrients. Comprehensive evaluation and factorial analysis of soil fertility was conducted according to national second soil census nutrient classification standards. 【Result】 The integrated fertility index of the two forests in the rocky desertification control area varied from 1.36 to 1.49 and soil fertility was generally at middle level. Soil total nitrogen, organic matter and available phosphorus were important factors of soil fertility in Rosaroxbunghii and Juglans regia forests but soil potassium and available potassium were limited factors for Rosaroxbunghii and Juglans regia forests. 【Conclusion】 Soil fertility of two forest types remained relatively moderate. More efforts should be needed to improve soil fertility of this area. The lack of potassium may be a factor limiting soil quality in both forests of rocky desertification control area of Guizhou Province. Organic fertilizer with contain potassium should be added purposely.

Key words: rocky desertification, soil fertility, diagnosis, evaluation

中图分类号: 

  • S158.2