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Contributions of Volume and Concentration on Runoff Nitrogen Losses from Intensive Vegetable in China

Mingkun Cheng1,2, Ju Min2,*, Yanying Zhang2, Yuhe Wang3, Xia Wang4, Weiming Shi1,*

1 Department of Horticulture, Foshan University, Foshan, 528000, China
2 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China
3 College of Life Sciences, Anhui Normal University, Wuhu, 241000, China
4 Quality Department, Jiangsu Environmental Monitoring Center, Nanjing, 210036, China

* Corresponding Authors: Ju Min. Email: email; Weiming Shi. Email: email

Phyton-International Journal of Experimental Botany 2024, 93(9), 2439-2453. https://doi.org/10.32604/phyton.2024.054182

Abstract

Vegetable runoff nitrogen (N) loss is a serious environmental issue. However, whether the volume or N content of runoff determines the final N losses has not been clarified, which limited the optimal N managements in vegetable production. Here, we conducted a simulated rainfall experiment to study the runoff N loss flux pattern and the accumulation rate as well as the main influencing factors. The results showed that at 20 to 30 min, the volume of runoff water with a high N content reaches a critical inflection point of increase. Under 55 mm/h rainfall intensity, the N concentration decreased continuously. Under 75 mm/h, the soluble N concentration decreased during the first 25 min; thereafter, it stabilized. However, the total and particulate N decreased significantly after 30 min. Nitrogen losses via runoff from vegetable fields were from 18.5 to 26.0 kg/ha under two rainfall intensities. Runoff soluble N losses were mainly attributed to applied fertilizers (79.7%–95.5%), while particulate N losses were primarily originated from soil-retained N. Our data indicates that there was a significant difference in N losses pattern and influencing factors under varied fertilizer N inputs and rainfall intensities, which can help to optimize water and N fertilizer managements to mitigate non-point source N pollutants. In the future, long-term multi-site and -crop studies should be conducted to comprehensively clarify the N runoff losses in vegetable soils.

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Cite This Article

APA Style
Cheng, M., Min, J., Zhang, Y., Wang, Y., Wang, X. et al. (2024). Contributions of volume and concentration on runoff nitrogen losses from intensive vegetable in china. Phyton-International Journal of Experimental Botany, 93(9), 2439-2453. https://doi.org/10.32604/phyton.2024.054182
Vancouver Style
Cheng M, Min J, Zhang Y, Wang Y, Wang X, Shi W. Contributions of volume and concentration on runoff nitrogen losses from intensive vegetable in china. Phyton-Int J Exp Bot. 2024;93(9):2439-2453 https://doi.org/10.32604/phyton.2024.054182
IEEE Style
M. Cheng, J. Min, Y. Zhang, Y. Wang, X. Wang, and W. Shi, “Contributions of Volume and Concentration on Runoff Nitrogen Losses from Intensive Vegetable in China,” Phyton-Int. J. Exp. Bot., vol. 93, no. 9, pp. 2439-2453, 2024. https://doi.org/10.32604/phyton.2024.054182



cc Copyright © 2024 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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