The duration of intensive vegetable cultivation regulates the fates of accumulated nitrate under reductive soil disinfestation

文献类型： 外文期刊

第一作者： Zhang, Huimin

作者： Zhang, Huimin;Fallah, Nyumah;Uwiragiye, Yves;Cheng, Yi;Zhang, Maoheng;Cai, Zucong;Wang, Jing;Uwiragiye, Yves;Qian, Yinfei;Cheng, Yi;Cheng, Yi;Cheng, Yi;Cheng, Yi;Mueller, Christoph;Mueller, Christoph;Mueller, Christoph;Mueller, Christoph

作者机构：

关键词： Intensive vegetable cultivation; Reductive soil disinfestation; NO3--N fates; NO3--N removal; NO3--N leaching; Denitrification

期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）

ISSN： 0032-079X

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Purpose Reductive soil disinfestation is an effective strategy for removing accumulated nitrate (NO3--N) from topsoil in intensive vegetable fields via elevating NO3--N consumption processes due to its water-saturated, strongly reductive, and carbon-rich characteristics. The duration of intensive vegetable cultivation may affect the relative importance of these consuming processes of NO3--N during reductive soil disinfestation treatment by altering topsoil properties. However, it remains elusive how the duration of intensive vegetable cultivation affects the fates of topsoil NO3--N during reductive soil disinfestation treatment. Methods Here, a soil column experiment labeled with (KNO3)-N-15 was conducted to investigate the effects of different cultivation ages (5, 10, 20 and 30 years) of intensively managed vegetable fields on the fates of topsoil NO3--N under reductive soil disinfestation treatment. Results The results showed that more than 91.8% of the added (NO3-)-N-15-N in topsoil was removed by reductive soil disinfestation treatment, regardless of cultivation years. There was a trade-off between denitrification and NO3--N leaching into the subsoil, collectively accounting for 85.5-97.1% of the added (NO3-)-N-15-N, regardless of cultivation years. The proportion of gaseous N-15 loss via denitrification to added (NO3-)-N-15-N (P-denitrification) initially increased from 5 to 10 years of cultivation, but subsequently decreased with further cultivation ages, whereas the trend was reversed for the proportion of leaching of (NO3-)-N-15-N into the subsoil to added (NO3-)-N-15-N (P-leaching). Conclusion Overall, our results highlight the critical role of using reductive soil disinfestation in removing accumulated NO3--N from the topsoil with its fates of a trade-off between P-denitrification and P-leaching as ages of intensive vegetable cultivation.

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