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Feasibility of Near-Infrared Spectroscopy for Rapid Detection of Available Nitrogen in Vermiculite Substrates in Desert Facility Agriculture

Author

Listed:
  • Pengfei Zhao

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China
    These authors contributed equally to this work.)

  • Jianfei Xing

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China
    These authors contributed equally to this work.)

  • Can Hu

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China
    College of Engineering, China Agricultural University, Beijing 100083, China)

  • Wensong Guo

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China)

  • Long Wang

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China
    College of Engineering, China Agricultural University, Beijing 100083, China)

  • Xiaowei He

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China
    College of Engineering, China Agricultural University, Beijing 100083, China)

  • Zhengxin Xu

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China)

  • Xufeng Wang

    (College of Mechanicaland Electrical Engineering, Tarim University, Alar 843300, China
    Agricultural Engineering Key Laboratory, Universities of Education Department of Xinjiang Uygur Autonomous Region, Tarim University, Alar 843300, China)

Abstract

Fast and precise estimation of the available nitrogen content in vermiculite substrates promotes prescription fertilization in desert facility agriculture. This study explored near-infrared spectroscopy for rapid detection of the available nitrogen content in vermiculite substrates in desert facility agriculture. The spectra of vermiculite matrices with different available nitrogen contents were collected through a self-assembled near-infrared spectrometer. Partial least squares expression (PLSR) established the available nitrogen spectrum prediction model optimized using different pretreatments. After pretreatment, the prediction model of the available nitrogen spectrum was simplified by adopting three feature extraction methods. A comprehensive comparison of the results of each prediction model showed that the prediction model combining the first derivative with SG smoothing pretreatment was the best. The correlation coefficients of the corresponding calibration and prediction sets were 0.9972 and 0.9968, respectively. The root mean square errors of the calibration and prediction sets were 149.98 and 159.65 mg/kg, respectively, with 12.57 RPD. These results provide a feasible method for rapidly detecting the available nitrogen content of vermiculite substrates in desert facility agriculture.

Suggested Citation

  • Pengfei Zhao & Jianfei Xing & Can Hu & Wensong Guo & Long Wang & Xiaowei He & Zhengxin Xu & Xufeng Wang, 2022. "Feasibility of Near-Infrared Spectroscopy for Rapid Detection of Available Nitrogen in Vermiculite Substrates in Desert Facility Agriculture," Agriculture, MDPI, vol. 12(3), pages 1-13, March.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:3:p:411-:d:771234
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    References listed on IDEAS

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    1. Panagiotis Dalias & Anastasis Christou & Damianos Neocleous, 2018. "Adjustment of Irrigation Schedules as a Strategy to Mitigate Climate Change Impacts on Agriculture in Cyprus," Agriculture, MDPI, vol. 9(1), pages 1-9, December.
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    Cited by:

    1. Penélope Mostazo & Carlos Asensio-Amador & Carlos Asensio, 2023. "Soil Erosion Modeling and Monitoring," Agriculture, MDPI, vol. 13(2), pages 1-4, February.

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