Partial Organic Substitution Fertilization Improves Soil Fertility While Reducing N Mineralization in Rubber Plantations

文献类型： 外文期刊

第一作者： Xu, Wenxian

作者： Xu, Wenxian;Guo, Xinwei;Sun, Rui;Luo, Wei;Wu, Zhixiang;Xu, Wenxian;Yang, Qiu;Liu, Wenjie;Jiang, Yamin;Jiang, Yamin;Fang, Mengyang

作者机构：

关键词： N mineralization; labile N components; enzyme activities; soil fertility; rubber plantation

期刊名称：FORESTS （ 影响因子：2.5； 五年影响因子：2.7 ）

ISSN：

年卷期： 2024 年 15 卷 9 期

页码：

收录情况： SCI

摘要： Overuse of chemical nitrogen (N) fertilizers leads to N leaching and soil degradation. Replacing chemical N fertilizers with organic fertilizers can enhance soil nutrition, reduce N loss, and improve soil productivity. However, the effects of combining organic and chemical fertilizers on soil N components and N transformation remain unclear. A 12-year field study included four treatments: no fertilizer (CK), chemical fertilizer alone (CF), 50% chemical N fertilizer combined with co-composted organic fertilizer (CFM), and composted (CFMC) organic fertilizer. The results showed that CFM and CFMC significantly enhanced SOC, TN, LFON, DON, NH4+-N, and MIN levels compared to CF. The CFM and CFMC treatments enhanced the soil N supply capacity and N pool stability by increasing the N mineralization potential (N0) and decreasing the N0/TN ratio. The CFM and CFMC treatments decreased net N ammonification rates by 108.03%-139.83% and 0.44%-64.91% and net mineralization rates by 60.60%-66.30% and 1.74%-30.38%, respectively. Changes in N transformation have been attributed to increased soil pH, enzyme activity, and substrate availability. These findings suggest that partial organic fertilizer substitution, particularly with co-composted organic fertilizers, is a viable strategy for enhancing soil fertility, improving soil N supply and stability, and reducing N loss in rubber plantations.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序