Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil

ZHU Junkang; YE Guiping; DING Weixin; FAN Jianbo; WU Bingxue; HE Jizheng; LIN Yongxin

doi:10.13870/j.cnki.stbcxb.2025.01.004

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Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil

更新时间：2025-03-14

- Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil
- Vol. 39, Issue 1, Pages: 113-119(2025)
- 作者机构：
  
  1. 湿润亚热带山地生态国家重点实验室培育基地,福州,350117
  2. 福建师范大学地理科学学院,福州,350117
  3. 福建省植物营养与化肥重点实验室,福州,350013
  4. 闽江学院地理与海洋学院,福州,350108
  5. 中国科学院南京土壤研究所,南京,210008
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2025.01.004
  CLC： S154.3
- Published：2025
- 稿件说明：
移动端阅览
ZHU Junkang, YE Guiping, DING Weixin, et al. Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil[J]. 2025, 39(1): 113-119.
DOI：

ZHU Junkang, YE Guiping, DING Weixin, et al. Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil[J]. 2025, 39(1): 113-119. DOI： 10.13870/j.cnki.stbcxb.2025.01.004.

摘要

目的红壤是我国南方典型的地带性土壤，有机替代是改善红壤理化性质的重要途径。为探究不同有机替代方式和团聚化过程对红壤微型动物群落的影响。方法采集单施无机氮磷钾(NPK)肥(I)、NPK+花生秸秆(IPS)、NPK+水稻秸秆(IRS)、NPK+萝卜菜(IR)和NPK+猪粪(IPM)5种长期施肥处理土壤，对土壤进行团聚体分级，利用高通量测序测定团聚体中微型动物群落。结果与I相比，IPM和IRS显著提高土壤有机质质量分数，而IPS和IR的影响相对较小。IPM还显著提高土壤pH、总氮和速效磷质量分数。有机替代对土壤微型动物多样性无显著影响，但显著影响其群落结构。线虫是旱地红壤质量分数最丰富的土壤微型动物，在I处理中的相对丰度为93.0%，IPM和IRS分别显著降低其相对丰度至62.2%和70.0%，而IPS和IR的影响较小。团聚体粒径显著影响土壤微型动物Shannon和Chao1指数，53~250、＜53 μm团聚体的多样性指数显著高于250~2 000、＞2 000 μm团聚体，表明粒径越小越有利于提高土壤微型动物多样性。团聚体粒径同样显著影响土壤微型动物群落结构，但其影响程度弱于有机替代。结论有机替代和团聚体粒径均可显著影响土壤微型动物群落，猪粪和水稻秸秆的影响效果大于花生秸秆和萝卜菜，而团聚化过程降低红壤微型动物多样性。

Abstract

Objective Red soil is a typical soil in Southern China

and organic substitution is an important way to improve the physicochemical properties of red soil. This study aimed to explore the effects of different organic substitution materials and aggregation on the microfauna communities in a red soil.Methods Soil samples from five long-term fertilization treatments were collected

including application of inorganic nitrogen

phosphorus

and potassium (NPK) fertilizer alone (I)

NPK+peanut straw (IPS)

NPK+rice straw (IRS)

NPK+radish (IR) and NPK+pig manure (IPM). Soil aggregates were fractionated

and high-throughput sequencing was used to determine the microfauna communities within the aggregates.Results Compared to I

IPM and IRS significantly increased soil organic matter content

while IPS and IR had relatively smaller effects; IPM also significantly increased soil pH

total nitrogen

and available phosphorus content. Organic substitution had no significant effect on the diversity of soil microfauna but significantly influenced their community structure. Nematodes were the most abundant soil microfauna in upland red soil

with a relative abundance of 93.0% in I; IPM and IRS significantly reduced their relative abundance to 62.2% and 70.0%

respectively

while IPS and IR had smaller effects. Aggregate size significantly affected the Shannon and Chao1 indices of soil microfauna

with the diversity indices of the 53—250 μm and < 53 μm aggregates significantly higher than those of the 250—2 000 μm and > 2 000 μm aggregates

indicating that smaller particle sizes were more conducive to increasing soil microfauna diversity. Aggregate size also significantly affected soil microfauna community structure

but its impact was weaker than that of organic substitution.Conclusion Both organic substitution and aggregate size could significantly affect soil microfauna communities

with pig manure and rice straw having greater effects than peanut straw and radish. The aggregation process reduced microfauna diversity in red soil.

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Keywords

references

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