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Recycling peach branch waste: effects of different field return methods on soil improvement and nitrogen cycling

文献类型： 外文期刊

作者： Cui, Bofei 1 ; Gao, Huili 1 ; Liu, Chenyu 3 ; Gao, Chengda 4 ; Chang, Mingming 1 ; Liu, Xin 5 ; Liu, Yueping 1 ;

作者机构： 1.Beijing Univ Agr, Coll Biosci & Resource Environm, Beijing 100096, Peoples R China

2.Beijing Univ Agr, Key Lab Northern Urban Agr, Minist Agr & Rural Affairs, Beijing 102206, Peoples R China

3.China Agr Univ, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management, Beijing 100193, Peoples R China

4.Beijing Univ Agr, Coll Humanities & Urban Rural Dev, Beijing 100096, Peoples R China

5.Beijing Acad Agr & Forestry Sci, Inst Forestry & Pomol, Beijing 100093, Peoples R China

关键词： Peach branch waste; Surface mulching; Nitrogen cycling; Soil microbiota

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： AimsWith the rapid expansion of peach cultivation in China, a substantial amount of pruned peach branch waste is generated annually. However, research on the sustainable disposal of these branch waste remains limited. This study aims to evaluate the potential of returning discarded peach branches to the field as a novel approach for resource recycling.MethodsWe evaluated the effects of three field return methods-organic fertilizer (OF), mushroom substrate (PM) and surface covering (SC)-on soil physicochemical properties. Metagenomic analysis was employed to investigate the impact of these treatments on soil microbial communities and nitrogen cycling-related genes.ResultsAll return methods significantly increased soil nutrient content, microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN). Metagenomic analysis revealed that these treatments markedly altered the composition, diversity and abundance of nitrogen cycling-related functional genes in soil microbial communities. Notably, surface covering (SC) significantly enhanced the abundance of nitrogen fixation genes (nifH, nifD and nifK) and nitrification-related genes (hao, hcp and nirS) and promoted the enrichment of nitrogen-fixing microbes such as Methylocaldum and Anaeromyxobacter. Moreover, changes in nitrogen cycling genes were strongly correlated with total carbon (TC), available potassium (AK), MBC and MBN.ConclusionsOur findings suggest that surface covering is an effective method for the field return of peach branch waste, capable of improving soil quality, enhancing nitrogen availability, optimizing microbial nitrogen cycling functions and promoting overall soil health.

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