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中国农学通报 ›› 2021, Vol. 37 ›› Issue (1): 94-99.doi: 10.11924/j.issn.1000-6850.casb20200200114

所属专题: 园艺

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

1993—2018年广西桉树主产区土壤肥力演变特征分析

唐健(), 赵隽宇, 覃祚玉, 王会利, 覃其云, 赵泽洪()   

  1. 广西壮族自治区林业科学研究院,南宁 530002
  • 收稿日期:2020-02-17 修回日期:2020-04-20 出版日期:2021-01-05 发布日期:2020-12-25
  • 通讯作者: 赵泽洪
  • 作者简介:唐健,男,1980年出生,广西桂林人,教授级高工,博士,研究方向:林木营养诊断与配方施肥研究。通信地址:530002 广西壮族自治区南宁市西乡塘区邕武路23号 广西林科院,Tel:0771-2319861,E-mail:21712104@qq.com
  • 基金资助:
    广西创新驱动发展专项资金项目课题“广西主要用材林高产高效精准施肥及地力维持关键技术研究与示范”(桂科AA17204087-11);广西科技基地和人才专项“广西林学与生物学院士工作站能力建设”(桂科AD17129051);广西林业科技推广示范项目“广西主要用材林减肥增效沃土保育关键技术推广与示范”(gl2017kt15)

Soil Fertility Evolution Characteristics in Main Eucalyptus Producing Areas of Guangxi: 1993-2018

Tang Jian(), Zhao Junyu, Qin Zuoyu, Wang Huili, Qin Qiyun, Zhao Zehong()   

  1. Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning 530002
  • Received:2020-02-17 Revised:2020-04-20 Online:2021-01-05 Published:2020-12-25
  • Contact: Zhao Zehong

摘要:

探明长期连栽的经营方式对广西桉树人工林土壤肥力的影响以及各土壤肥力指标的演变特征,为广西桉树人工林经营制定合理的营林、施肥管理方式。以广西桉树主产区域为研究对象,选取pH、有机质、全氮、全磷、全钾、碱解氮、有效磷、速效钾等土壤化学指标,采用模糊数学法评价广西1993—2018年桉树人工林地土壤肥力质量。结果表明,长期连栽下广西桉树人工林土壤呈酸化趋势,从最初的pH 4.83下降至pH 4.63,下降了4.14%。土壤有机质、全磷、碱解氮、速效钾的含量均有显著下降的趋势。土壤肥力质量指数(IFI)介于0.475~0.613之间,整体肥力指数较低。在实际生产中应重视土壤改良,提倡测土配方合理施肥,减少酸性肥料的使用,增施有机肥、缓释肥,保证桉树人工林生态健康、可持续发展。

关键词: 桉树, 长期连栽, 高强度, 人工林, 土壤肥力评价

Abstract:

To explore the characteristics of soil fertility evolution of eucalyptus plantation in Guangxi under long-term intensive management, and formulate a reasonable management method of eucalyptus plantation in Guangxi, the soil fertility quality of eucalyptus plantation from 1993 to 2018 was evaluated by means of fuzzy mathematics with soil chemical properties such as pH, organic matter, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen, available phosphorus and available potassium. The results showed that the soil pH of eucalyptus plantation in Guangxi decreased from 4.83 to 4.63, a decrease of 4.14%. The contents of soil organic matter, total phosphorus, available nitrogen and available potassium all showed a significant decreasing trend. The soil fertility quality index (IFI) was between 0.475 and 0.613, and the overall fertility index was low. The soil of eucalyptus plantation showed a trend of acidification under long-term continuous planting during 1993-2018. In actual production, we should pay more attention to soil improvement, advocate soil testing and reasonable fertilization, reduce the use of acid fertilizer, increase the application of organic fertilizer and slow release fertilizer, and ensure the ecological health and sustainable development of eucalyptus plantation.

Key words: eucalyptus, long-term continuous planting, high strength, plantation, soil fertility evaluation

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