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基于大米的综合农业系统在亚湿热带条件下改善了土壤质量,细菌社区结构和系统生产力

Prafulla Kumar Nayak¹, A K Nayak², B B Panda²

¹ICAR-National Rice Research Institute, Cuttack, Odisha, 753006, India. nayakpra@yahoo.com.

Environmental geochemistry and health

|February 6, 2024

概括

综合农业系统 (IFS) 提高了土壤健康,细菌多样性和作物产量. 与传统农业相比,这种方法通过提高土壤肥力和营养循环来促进农业生态系统的可持续性.

科学领域:

农业科学农业科学
土壤微生物学土壤微生物学
生态生态学生态生态学

背景情况:

在亚湿热带地区的米生产往往会因为营养补充不足而降低土壤健康.
有限的研究存在于多企业的基于大米的综合农业系统 (IFS) 与传统系统 (CS) 中的土壤健康和肥力.
了解土壤微生物动态对于可持续的农业实践至关重要.

研究的目的:

分析土壤属性动态,细菌群体结构,以及它们在以大米为基础的IFS中的相互作用.
评估IFS对土壤质量和作物生产率的影响,包括停水区 (IFSw),与CS相比.
阐明IFS提高土壤健康和农业产量的机制.

主要方法:

对IFS,IFSW和CS的土壤特性和细菌社区结构进行比较分析.
评估土壤营养动态,细菌多样性指数 (Shannon,Simpson,Chao 1,ACE,Fisher) 和主导品种的操作分类单位.
计算土壤质量指数 (SQI) 和与大米等效产量 (REY) 和大米产量的相关性分析.

主要成果:

与CS相比,IFS和IFSW表现出明显更高的土壤营养动态和细菌多样性指数.
主导的细菌系 (例如,Chloroflexi,Acidobacteria) 在IFS和IFSW中更为丰富.
平均SQI在IFSW (0.780) 和IFS (0.770) 中最高,显著超过CS (0.595);REY和大米产量与土壤生物指数 (SQI_Biol) 呈正相关.

结论:

基于大米的综合农业系统显然改善了土壤的健康和肥力.
在IFS中增强的土壤细菌群落和营养固态度有助于提高作物生产率和农业生态系统的可持续性.
IFS代表了一种可行的策略,可以缓解土壤退化,并促进以大米为基础的农业产量.

关键词:

在 IFS IFS 里面.大米大米大米大米大米土壤细菌社区的土壤细菌社区土壤质量指数土壤质量指数系统生产率系统生产率

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