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中国农学通报 ›› 2020, Vol. 36 ›› Issue (21): 82-91.doi: 10.11924/j.issn.1000-6850.casb20190500150

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

三峡库区花岗岩母质石英砂土不同经济林模式土壤养分特征研究

王晓荣1, 胡文杰1, 潘磊1, 付甜1, 崔鸿侠1, 唐万鹏1(), 罗雷2, 辛海静3   

  1. 1 湖北省林业科学研究院,武汉 430075
    2 湖北省林业调查规划院,武汉 430079
    3 烟台市农业农村局,山东烟台 264000
  • 收稿日期:2019-05-16 修回日期:2019-09-19 出版日期:2020-07-25 发布日期:2020-07-21
  • 通讯作者: 唐万鹏
  • 作者简介:王晓荣,男,1984年出生,内蒙古包头人,助理研究员,硕士,研究方向:森林生态。通信地址:430075 湖北省武汉市东湖新技术开发区森林大道枫林路39号 湖北省林业科学研究院,E-mail:rongagewang@126.com。
  • 基金资助:
    国家重点研发计划项目“三峡库区面源污染防治技术集成与示范”(2017YFC050530304)

Different Economic Forest Modes in Quartz Sandy Soil from Granite Parent in the Three Gorges Reservoir Area: Soil Nutrient Characteristics

Wang Xiaorong1, Hu Wenjie1, Pan Lei1, Fu Tian1, Cui Hongxia1, Tang Wanpeng1(), Luo Lei2, Xin Haijing3   

  1. 1 Hubei Academy of Forestry Sciences, Wuhan 430075
    2 Investigation and Planning Institute of Hubei Forestry, Wuhan 430079
    3 Yantai Bureau of Agriculture and Rural Affairs, Yantai Shandong 264000
  • Received:2019-05-16 Revised:2019-09-19 Online:2020-07-25 Published:2020-07-21
  • Contact: Tang Wanpeng

摘要:

为了解三峡库区花岗岩母质不同经济林模式的土壤养分状况,研究了各模式下土壤pH、有机质、全量养分和速效养分的特征,并利用主成分分析法对不同模式的土壤质量进行了综合评价。结果表明,除土壤pH外,经济林土壤有机质、全氮、全磷、全钾、碱解氮、有效磷、速效钾等含量的变异较宽,为中等变异。随土壤层次的增加,各模式下土壤有机质、全氮、速效氮、速效磷和速效钾含量呈递减趋势,而全磷和全钾则存在不规律变化。土壤有机质、全氮和速效钾对经济林土壤质量的高低产生着主要作用,土壤养分综合排名表现为柑橘(精细管理)>柑橘(常规管理)>板栗林>茶园。因此,利用生物措施和精细化管理措施,可有效提高该区域经济林的土壤质量。

关键词: 花岗岩母质, 石英砂土, 经济林模式, 土壤养分, 三峡库区

Abstract:

The paper aims to understand the soil nutrient status of different economic forest modes in quartz sandy soil from granite parent in the Three Gorges Reservoir area. We studied the characteristics of soil pH value, organic matter, the total and available nutrient contents of conventionally managed citrus orchard, tea garden, Castanea mollissima forest and precisely managed citrus orchard, and conducted comprehensive evaluation of soil quality by using principal component analysis. The results showed that: except soil pH value, the contents of organic matter, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzable nitrogen, available phosphorus, and available potassium varied widely as medium variation; with the increase of soil layers, the contents of soil organic matter, total nitrogen, available nitrogen, available phosphorus and available potassium in different economic forest modes showed a decreasing trend, while the contents of total phosphorus and total potassium changed irregularly; the principal component analysis exhibited that soil organic matter, total nitrogen and available potassium played a major role in soil quality, and the comprehensive ranking of soil nutrients was shown as precisely managed citrus orchard>conventionally managed citrus orchard>Castanea mollissima forest>tea garden. Therefore, the combination of biological measures and precise management measures can effectively improve the soil quality of economic forests in quartz sandy soil from granite parent in the Three Gorges Reservoir area.

Key words: granite parent, quartz sandy soil, economic forest modes, soil nutrient, Three Gorges Reservoir Area

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