Next Article in Journal
Copper Toxicity and Prediction Models of Copper Content in Leafy Vegetables
Previous Article in Journal
Artificial Light at Night Influences Clock-Gene Expression, Activity, and Fecundity in the Mosquito Culex pipiens f. molestus
Previous Article in Special Issue
Improving Phosphorus Use Efficiency and Optimizing Phosphorus Application Rates for Maize in the Northeast Plain of China for Sustainable Agriculture
Open AccessArticle

Comparison of Active Nitrogen Loss in Four Pathways on a Sloped Peanut Field with Red Soil in China under Conventional Fertilization Conditions

by Haijin Zheng 1,2,*, Zhao Liu 1,2, Xiaofei Nie 1,2, Jichao Zuo 1,2 and Lingyun Wang 1,2
1
Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention, Nanchang 330029, China
2
Jiangxi Institute of Soil and Water Conservation, Nanchang 330029, China
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(22), 6219; https://doi.org/10.3390/su11226219
Received: 19 September 2019 / Revised: 22 October 2019 / Accepted: 26 October 2019 / Published: 6 November 2019
(This article belongs to the Special Issue Sustainable Cropping Practices to Counteract Environmental Stresses)
Active nitrogen loss mainly includes ammonia (NH3) volatilization, nitrous oxide (N2O) emission, NO3-N and NH4+-N deep leakage (N leaching), and NO3-N and NH4+-N surface runoff (N runoff), resulting in serious environmental problems. To analyze the characteristics of active nitrogen loss in the four pathways on sloped farmland under conventional fertilization, six lysimeters with a slope of 8° were used. Losses due to NH3 volatilization, N2O emission, N leaching, and N runoff were investigated after urea application on a peanut field with red soil in China during the growing season from 2017–2018. Results reveal that at conventional nitrogen levels of 150 and 172 kg hm−2, the total active nitrogen loss caused by fertilization accounting for the total nitrogen applied was 5.57% and 14.21%, respectively, with the N2O emission coefficients of 0.18% and 0.10%, respectively; the NH3 volatilization coefficients of 2.24% and 0.31%, respectively; the N leakage loss rates of 3.07% and 10.50%, respectively; and the N runoff loss rates of 0.08% and 3.30%, respectively. The dry year was dominated by leaching and NH3 volatilization, while the wet year was dominated by leaching and runoff; the base fertilizer period was dominated by leakage, while the topdressing period was dominated by leakage and runoff, which suggests that the loss of active nitrogen in the soil-peanut system on a sloped red soil was mainly affected by rainfall and fertilization methods. Taken together, reasonable fertilization management and soil and water conservation measures appear to be effective in minimizing the loss of active nitrogen from nitrogen fertilizer. View Full-Text
Keywords: N leaching; N runoff; N2O emission; NH3 volatilization; red soil sloping uplands N leaching; N runoff; N2O emission; NH3 volatilization; red soil sloping uplands
Show Figures

Figure 1

MDPI and ACS Style

Zheng, H.; Liu, Z.; Nie, X.; Zuo, J.; Wang, L. Comparison of Active Nitrogen Loss in Four Pathways on a Sloped Peanut Field with Red Soil in China under Conventional Fertilization Conditions. Sustainability 2019, 11, 6219.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop