Journalartikel

Jahr der Veröffentlichung: 2024

Seiten: 147-160

Zeitschrift: Plant and Soil

Bandnummer: 498

Heftnummer: 1-2

ISSN: 0032-079X

eISSN: 1573-5036

DOI Link: https://doi.org/10.1007/s11104-022-05683-z

Verlag: Springer

Abstract: 

Purpose: Reductive soil disinfestation (RSD) has been widely applied to improve soil degradation, enhancing vegetable N uptake and productivity. However, its effects on interactions between vegetable N uptake and soil gross N transformation remain unclear. Methods: Two degraded vegetable soils were treated with RSD and N-15 tracing pot experiments were conducted to quantify the effects of RSD on N cycling in vegetable-soil systems. Results: Vegetable NH4+ and NO3- uptake rates were 1.0-6.5 times higher following RSD than CK, while soil gross N mineralization rates (M) ranged from 0.83-13.00 mg N kg(-1) d(-1), and were significantly higher than the CK (0.21-8.71 mg N kg(-1) d(-1)). Meanwhile, autotropic nitrification rate (O-NH4) increased by 1.7-4.2 following RSD, while NH4+ immobilization rates (I-NH4) were significantly inhibited by RSD in the presence of planting. This induced a decrease in (O-NH4 + I-NH4)/M, and increases in NH4+ retention times and production rates of soil NO3- following RSD. In addition, RSD improved the overall quality of the degraded soils (increasing the pH, and decreasing EC and NO3- contents as well as pathogen abundance), further promoting vegetable N uptake. Conclusion: RSD promoted vegetable N uptake by regulating soil gross N transformation rates and improving the quality of degraded vegetable soil. However, NO3- production rates were enhanced following RSD, increasing the risk of NO3- leaching and gaseous N losses. N fertilizer management under RSD therefore requires further attention.

Harvard-Zitierstil: Dan, X., He, M., Chen, S., He, X., Zhao, C., Meng, L., et al. (2024) Reductive soil disinfestation promotes vegetable N uptake by regulating soil gross N transformation and improving the quality of degraded soil, Plant and Soil, 498(1-2), pp. 147-160. https://doi.org/10.1007/s11104-022-05683-z

APA-Zitierstil: Dan, X., He, M., Chen, S., He, X., Zhao, C., Meng, L., Cai, Z., Zhang, J., & Müller, C. (2024). Reductive soil disinfestation promotes vegetable N uptake by regulating soil gross N transformation and improving the quality of degraded soil. Plant and Soil. 498(1-2), 147-160. https://doi.org/10.1007/s11104-022-05683-z