植物生态学报 ›› 2023, Vol. 47 ›› Issue (4): 530-545.DOI: 10.17521/cjpe.2021.0398

所属专题: 生态化学计量

• 研究论文 • 上一篇    下一篇

添加秸秆及其生物炭对茉莉植株与土壤碳氮磷生态化学计量特征的影响

林少颖1, 曾瑜2, 杨文文3, 陈斌3, 阮敏敏3, 尹晓雷1, 阳祥1, 王维奇1,*()   

  1. 1.福建师范大学地理研究所, 湿润亚热带生态-地理过程教育部重点实验室, 福州 350007
    2.闽榕茶业有限公司, 福州 350018
    3.福州市农业农村局, 福州 350026
  • 收稿日期:2021-11-05 接受日期:2022-04-22 出版日期:2023-04-20 发布日期:2022-04-22
  • 通讯作者: *(wangweiqi15@163.com)
  • 基金资助:
    国家自然科学基金(41571287)

Effects of straw and biochar addition on carbon, nitrogen and phosphorus ecological stoichiometry in Jasminum sambac plant and soil

LIN Shao-Ying1, ZENG Yu2, YANG Wen-Wen3, CHEN Bin3, RUAN Min-Min3, YIN Xiao-Lei1, YANG Xiang1, WANG Wei-Qi1,*()   

  1. 1. Institute of Geography, Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China
    2. Minrong Tea Co., Ltd, Fuzhou 350018, China
    3. Fuzhou Agriculture and Rural Affairs Bureau, Fuzhou 350026, China
  • Received:2021-11-05 Accepted:2022-04-22 Online:2023-04-20 Published:2022-04-22
  • Contact: *(wangweiqi15@163.com)
  • Supported by:
    National Natural Science Foundation of China(41571287)

摘要:

研究植物不同器官碳(C)、氮(N)、磷(P)含量及其生态化学计量特征对深入了解土壤养分元素在循环过程中的相互耦合关系具有重要指示意义。在福州茉莉(Jasminum sambac)种植基地, 设置对照、秸秆、生物炭添加处理, 测定茉莉植株的生长特性、茉莉不同器官和土壤C、N、P含量, 分析其生态化学计量特征。结果表明: 与对照处理相比, 秸秆添加处理的茉莉叶生物量显著增加了73.33%, 土壤盐度和土壤温度均显著降低了37.04%和1.41%; 而生物炭添加处理的茉莉株高、叶面积及叶、茎生物量较对照处理分别显著增加了26.11%、29.42%、239.59%和96.04%, 土壤密度和土壤温度显著降低了18.33%和1.79%。不同添加处理下, 茉莉叶和茎的C含量及叶N含量均无显著差异, 而根和土壤的C、N含量则表现为生物炭添加处理显著高于秸秆添加处理和对照处理; 茉莉叶、茎和根P含量均表现为生物炭添加处理>对照处理>秸秆添加处理, 且生物炭添加处理比对照处理分别显著提高了41.68%、43.73%和24.63%, 而土壤P含量则表现为生物炭添加处理>秸秆添加处理>对照处理。其次, 生物炭添加处理较对照处理降低了叶、茎、根和土壤的C:P, 且显著降低了茉莉叶和茎的N:P, 而根和土壤则反之。此外, 茉莉不同器官的C、N、P元素内稳性整体表现为C > N > P, 比值内稳性表现为N:P > C:P > C:N。综合而言, 生物炭添加增加了茉莉地上植株对N、P的吸收和同化量, 进一步促进了植物-土壤系统的固碳与内稳性。

关键词: 秸秆, 生物炭, 土壤, 生态化学计量学, 茉莉园

Abstract:

Aims The contents of carbon (C), nitrogen (N) and phosphorus (P) in different plant organs and their ecological stoichiometric characteristics are important for understanding of the relationships among soil nutrients in their cycling process. The purpose of this study was to explore the variations of ecological stoichiometry of plant and soil C, N, and P in a jasmine (Jasminum sambac) plantation and their stoichiometric homeostasis under three different treatments.

Methods We set up three treatments: control, straw addition and biochar addition, and measured growth characteristic parameters of jasmine and C, N, P contents in different jasmine organs and in the soil and then analyzed their ecological stoichiometric characteristics.

Important findings Results showed that compared to the control, the straw addition treatment significantly increased the leaf biomass of jasmine by 73.33%, and decreased the soil salinity and soil temperature by 37.04% and 1.41%, respectively. Additionally, the biochar addition treatment significantly increased the plant height, leaf area, leaf and stem biomass of jasmine by 26.11%, 29.42%, 239.59% and 96.04%, while the soil density and soil temperature were significantly lower under the biochar addition treatment than under the control by 18.33% and 1.79%, respectively. Under different treatments, there was no significant difference in leaf or stem C content, or leaf N content. Root and soil C and N contents were significantly higher under biochar addition treatment than under straw addition and control treatments. The P contents of jasmine leaf, stem, root were in the order of biochar addition treatment > control treatment > straw addition treatment, while the soil P content was in the order of biochar addition treatment > straw addition treatment > control treatment. Compared with the control treatment, the biochar addition treatment decreased the C:P of leaf, stem, root and soil, and significantly decreased the N:P of jasmine leaf and stem, while increasing the N:P of root and soil. The overall internal stability of C, N, and P in different organs of jasmine was in the order of C > N > P, and the C:N, C:P and N:P were in the order of N:P > C:P > C:N. In summary, the application of biochar addition increased the absorption and assimilation of N and P by above-ground plants, and further promoted the C sequestration and homeostasis in the plant-soil system.

Key words: straw, biochar, soil, ecological stoichiometry, jasmine plantation