GUO Yongzhong,HAN Xinsheng,XU Hao,et al.Effects of Different Mulching Materials on the Soil Bacterial Diversity of Dry-farmed Red Plum Apricot[J].Northern Horticulture,2026,(7):99-105.[doi:10.11937/bfyy.20253583]
不同覆盖材料对旱作红梅杏园土壤细菌多样性的影响
- Title:
- Effects of Different Mulching Materials on the Soil Bacterial Diversity of Dry-farmed Red Plum Apricot
- 文章编号:
- 1001-0009(2026)07-0099-07
- Keywords:
- mulching materials; dryland apricot orchard; soil bacterial community; alpha-diversity; soil hydrothermal conditions
- 分类号:
- S151.9
- 文献标志码:
- A
- 摘要:
- 以宁夏彭阳县旱作杏园土壤为试材，采用高通量测序技术，研究了不同覆盖材料（锯末、麦草、白膜和黑膜）对土壤细菌群落结构特征的影响，以期为旱区杏园的土壤管理与生态可持续实践提供参考依据。结果表明：与对照相比，4种覆盖处理均显著降低了土壤细菌群落的α多样性指数（Chao1和Shannon），并显著改变了群落结构。在门水平上，变形菌门（Proteobacteria）、放线菌门（Actinobacteria）和酸杆菌门（Acidobacteria）为优势菌群。地膜覆盖显著提高了放线菌门和绿弯菌门（Chloroflexi）的相对丰度，而有机覆盖（锯末、麦草）则更有利于变形菌门的富集。冗余分析结果表明，土壤湿度、温度和最大持水量是驱动细菌群落变化的主要环境因子，而电导率、全钾和速效钾等土壤化学性质也对群落结构产生了显著影响。综上，不同覆盖材料通过调节土壤水热条件与养分状况，重塑了土壤细菌群落组成，但整体上对微生物多样性具有一定的抑制作用。
- Abstract:
- Taking the soil of dryland apricot orchards in Pengyang County，Ningxia as the test material，and using high-throughput sequencing technology，the effects of different covering materials (sawdust，wheat straw，white film and black film) on the structural characteristics of soil bacterial communities were studied，in order to provide a reference for soil management and ecological sustainable practice in apricot orchards in arid areas.The results showed that compared to the control，all four mulching treatments significantly reduced the α-diversity indices (Chao1 and Shannon) of the soil bacterial community and markedly altered its composition.At the phylum level，Proteobacteria,Actinobacteria，and Acidobacteria were the dominant bacterial groups.Plastic film mulching significantly increased the relative abundance of Actinobacteria and Chloroflexi，while organic mulching (sawdust and wheat straw) favored the enrichment of Proteobacteria.Redundancy analysis indicated that soil moisture，temperature，and maximum water-holding capacity were the primary environmental factors driving changes in the bacterial community，while soil chemical properties such as electrical conductivity，total potassium，and available potassium also had significant effects.In conclusion，different mulching materials reshape the soil bacterial community composition by regulating soil hydrothermal conditions and nutrient availability but generally suppress microbial diversity.
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备注/Memo
第一作者简介：郭永忠（1975-），男，硕士，副研究员，现主要从事经果林栽培及水土保持等研究工作。E-mail:nxgyzh@163.com.责任作者：许浩（1979-），男，博士，副研究员，现主要从事生态修复等研究工作。E-mail:xuhao-cn@163.com.基金项目：宁夏成果转化资助项目（2025CJE09006）；宁夏自然科学基金资助项目（2022AAC03426）;宁夏农业科技自主创新资金资助项目（NGSB-2021-11-06）;中央引导地方科技发展专项资助项目（2026FRG05007）。收稿日期：2025-10-16