Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (15): 72-77.doi: 10.11924/j.issn.1000-6850.casb2020-0416

Special Issue: 资源与环境 园艺

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Influencing Factors of N2O Emission from Tea Garden Soil and Emission Reduction Measures

Fang Yage(), Su Youjian, Liao Wanyou, Zhang Yongli, Luo Yi, Sun Yulong, Liao Jun, Wang Yejun()   

  1. Tea Research Institute of Anhui Academy of Agricultural Sciences, Huangshan Anhui 245000
  • Received:2020-08-31 Revised:2020-12-30 Online:2021-05-25 Published:2021-05-18
  • Contact: Wang Yejun E-mail:yagefangjacob@163.com;wangye0559@163.com

Abstract:

The soil of tea plantations can release large amounts of nitrous oxide (N2O) through the role of microorganisms. Therefore, it is so urgent to understand the mechanism and influencing factors of N2O production from the tea garden soil to provide a theoretical basis for reducing N2O emission. A review of the effects of nitrogen source, organic matter, pH, moisture, temperature and texture on N2O emission from the soil of tea plantations was conducted, and the corresponding measures of N2O emission reduction were proposed. Through explaining the above influencing factors, we found that denitrification had big contribution to N2O emission; nitrogen fertilizer application, the physical and chemical properties of soil and meteorological factors played important roles in N2O emission. Application of slow-release nitrogen fertilizer, deep application of nitrogen fertilizer, using recommended amount of nitrogen fertilizer, and organic nutrient replacement technology could reduce N2O emission of tea plantation soil.

Key words: tea plantation soil, N2O, nitrification, denitrification, influencing factors, emission reduction measures

CLC Number: