浙江农业学报 ›› 2024, Vol. 36 ›› Issue (11): 2558-2565.DOI: 10.3969/j.issn.1004-1524.20231086

• 环境科学 • 上一篇    下一篇

不同种植年限茭白田土壤的有机碳含量与结构特征

艾然1,2(), 何杰3, 林海忠3, 翁丽青4, 陈照明2, 马军伟2, 王强2,*()   

  1. 1.浙江农林大学 环境与资源学院,浙江 杭州 311300
    2.浙江省农业科学院 环境资源与土壤肥料研究所,浙江 杭州 310021
    3.台州市黄岩区农业农村局,浙江 台州 318020
    4.余姚市农业农村局,浙江 余姚 315400
  • 收稿日期:2023-09-11 出版日期:2024-11-25 发布日期:2024-11-27
  • 作者简介:艾然(1999—),男,安徽马鞍山人,硕士,主要从事耕地质量培育与提升研究。E-mail: 719054708@qq.com
  • 通讯作者: *王强,E-mail: qwang0571@126.com
  • 基金资助:
    台州市黄岩区农业绿色发展先行先试支持体系建设服务项目(HY202001);优质稻全产业链绿色发展模式集成示范(202201)

Soil organic carbon content and structural characteristics in water bamboo fields with different cultivation time

AI Ran1,2(), HE Jie3, LIN Haizhong3, WENG Liqing4, CHEN Zhaoming2, MA Junwei2, WANG Qiang2,*()   

  1. 1. College of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, China
    2. Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3. Huangyan Bureau of Agriculture and Rural Affairs, Taizhou 318020, Zhejiang, China
    4. Yuyao Bureau of Agriculture and Rural Affairs, Yuyao 315400, Zhejiang, China
  • Received:2023-09-11 Online:2024-11-25 Published:2024-11-27

摘要:

为探究茭白种植年限对土壤有机碳(SOC)含量和结构特征的影响,以浙江余姚和黄岩两地不同种植年限的茭白田土壤(黄岩的种植年限为0、5、15、30 a,余姚的种植年限为1、5、15 a)为对象,采集0~20、>20~40 cm土层样品,测定土壤颗粒有机碳(POC)含量,并通过固态碳-13核磁共振技术(13C NMR)对SOC官能团丰度进行检测。结果表明:在黄岩试验点,0~20 cm茭白田的SOC含量随种植年限的增加而增加,但茭白种植年限对>20~40 cm土层的SOC含量无显著影响,与未种植茭白的农田相比,种植30 a茭白田的0~20 cm土层的SOC、POC含量分别显著(P<0.05)升高40.3%、86.4%,POC占SOC的比例显著增加12百分点,但土壤烷基碳比例显著降低5.96百分点,>20~40 cm土层的烷基碳比例显著下降9.53百分点,而芳香碳比例显著升高4.31百分点。在余姚试验点,各种植年限茭白田0~20、>20~40 cm土层的SOC官能团丰度和>20~40 cm土层的SOC、POC含量均无显著差异,但与种植1 a茭白的相比,种植5 a茭白田0~20 cm土层的SOC、 POC含量分别显著提高41.0%、87.1%,POC占SOC的比例显著增加10百分点。综上,茭白种植可以提高0~20 cm土层的SOC含量和POC含量,但随着种植年限的增加,土壤有机碳的稳定性减弱。

关键词: 茭白, 种植年限, 土壤有机碳, 有机碳组分, 碳-13核磁共振(13C NMR)

Abstract:

In order to investigate the effects of water bamboo cultivation time on soil organic carbon (SOC) content and structural characteristics, soil samples were collected from 0-20 cm and >20-40 cm layer from water bamboo fields with different planting years in Huangyan District and Yuyao City in Zhejiang Province, China, (in Huangyan, the water bamboo cultivation time was 0, 5, 15, 30 a, respectively; in Yuyao, the water bamboo cultivation time was 1, 5, 15 a, respectively). The soil particulate organic carbon (POC) content was determined, and the SOC functional group abundance was detected by solid-state 13C nuclear magnetic resonance (13C NMR). The results showed that, the SOC content in 0-20 cm layer of water bamboo field increased with the prolonged cultivation time, but the cultivation time did not significantly affect the SOC content in >20-40 cm soil layer in Huangyan. Besides, compared with the filed without water bamboo cultivation, the contents of SOC and POC content in the 0-20 cm soil layer of water bamboo field cultivated for 30 a in Huangyan were significantly (P<0.05) increased by 40.3%, 86.4%, respectively, the proportion of POC in SOC in 0-20 cm soil layer was significantly increased by 12 percentage points, the proportion of alkyl-C was significantly decreased by 5.96, 9.53 percentage points in the 0-20, >20-40 cm soil layer, respectively, and the proportion of aromatic-C was significantly increased by 4.31 percentage points in the >20-40 soil layer. In Yuyao, the SOC functional group abundance in both 0-20 and >20-40 cm soil layer and the contents of SOC, POC in >20-40 cm soil layer were not significantly influenced by the cultivation time. Compared with the water bamboo field cultivated for 1 a, the contents of SOC and POC in the 0-20 cm soil layer of the water bamboo field cultivated for 5 a were significantly increased by 41.0%, 87.1%, respectively, and the proportion of POC in SOC was significantly increased by 10 percentage points. In general, water bamboo planting could increase the SOC content and POC content in 0-20 cm soil layer, yet the prolonged cultivation of water bamboo could weaken the stability of soil organic carbon.

Key words: water bamboo, cultivation time, soil organic carbon, organic carbon fraction, carbon-13 nuclear magnetic resonance (13C NMR)

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