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Potential to Reduce Chemical Fertilizer Application in Tea Plantations at Various Spatial Scales

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  • Shaowen Xie

    (School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
    Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
    National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China)

  • Fen Yang

    (Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

  • Hanxiao Feng

    (Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

  • Zhenzhen Yu

    (Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

  • Xinghu Wei

    (School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China)

  • Chengshuai Liu

    (Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
    National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Chaoyang Wei

    (Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

Abstract

Tea is the main commercial crop grown in China, and excessive application of chemical fertilizers in tea plantations is common. However, the potential to reduce chemical fertilizer use in tea plantations is unclear. In this study, Zhejiang Province was selected as the research object to systematically analyze the potential for tea plantation chemical-fertilizer reduction at different spatial scales. The geographic information system-based analytic hierarchy process method and Soil and Water Assessment Tool model were used to determine the chemical fertilizer reduction potential at the province scale and watershed scale, respectively. At the field scale, two consecutive years of field experiments were conducted on a tea plantation. Province-level analysis showed that 51.7% of the area had an average total fertilization intensity greater than 350 kg/hm 2 and a high reduction potential. Watershed analysis revealed that chemical fertilizer reduction had better potential in reducing total nitrogen and total phosphorus inputs to runoff in the short term, whereas 50% organic fertilizer substitution was the best strategy to achieve long-term effects. The field experiments further proved that organic fertilizer substitution balanced tea growth and environmental protection. This study provides a useful method to investigate strategies to reduce chemical fertilizer use in tea-growing areas.

Suggested Citation

  • Shaowen Xie & Fen Yang & Hanxiao Feng & Zhenzhen Yu & Xinghu Wei & Chengshuai Liu & Chaoyang Wei, 2022. "Potential to Reduce Chemical Fertilizer Application in Tea Plantations at Various Spatial Scales," IJERPH, MDPI, vol. 19(9), pages 1-17, April.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:9:p:5243-:d:802225
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    References listed on IDEAS

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    1. Shan, Linan & He, Yunfeng & Chen, Jie & Huang, Qian & Lian, Xu & Wang, Hongcai & Liu, Yili, 2015. "Nitrogen surface runoff losses from a Chinese cabbage field under different nitrogen treatments in the Taihu Lake Basin, China," Agricultural Water Management, Elsevier, vol. 159(C), pages 255-263.
    2. Tan, Deshui & Jiang, Lihua & Tan, Shuying & Zheng, Fuli & Xu, Yu & Cui, Rongzong & Wang, Mei & Shi, Jing & Li, Guosheng & Liu, Zhaohui, 2013. "An in situ study of inorganic nitrogen flow under different fertilization treatments on a wheat–maize rotation system surrounding Nansi Lake, China," Agricultural Water Management, Elsevier, vol. 123(C), pages 45-54.
    3. Yurong Yang & Zhaoliang Li & Yan Zhang, 2021. "Incentives or restrictions: policy choices in farmers’ chemical fertilizer reduction and substitution behaviors [A theory of social custom, of which unemployment may be one consequence]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 16(2), pages 351-360.
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