土壤质地对菠萝蜜根际微生物碳源利用、线虫群落及果实糖分的影响

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国家科技期刊平台
NETL
NSTL
万方数据
维普

中文摘要：[目的]研究相同施肥模式下不同质地土壤微环境差异及其与果实关键品质(糖分)的潜在关系，为区域性的果园培肥和增产提质提供理论依据。[方法]选取施肥方案一致、土壤质地分别为壤土、砂壤土和砂土的'马来西亚 1号'标准菠萝蜜园，采集养树期、花期和果期的菠萝蜜根周土壤和成熟果实，研究土壤微生物群落代谢功能、线虫群落结构、土壤理化性质及果实糖分的变化及潜在关系。[结果]砂壤土和砂土微生物碳源利用变化趋势均为养树期＞花期＞果期。壤土微生物碳源代谢强度大小为果期＞养树期＞花期。土壤微生物主要的碳源利用类型是碳水化合物类、氨基酸类、羧酸类和多聚物类碳源。砂土各时期的土壤微生物群落结构多样性指数和各营养类群线虫丰度普遍高于其他两种土壤，且在养树期和果期较高。壤土各时期线虫生态指数和土壤pH、有机质普遍高于其他两种土壤。果实中的葡萄糖含量表现为砂壤土＞壤土＞砂土，其他糖组分在各质地土壤中差异不显著。采样时期对土壤线虫群落多样性有显著的直接效应，土壤质地对菠萝蜜果实糖分有显著的间接效应和总效应。[结论]有机、无机肥配施对异质土壤的微生态环境影响各异，土壤质地通过直接或间接影响养树期和果期菠萝蜜根际微生物和线虫群落结构及功能，最终影响土壤养分转化和果实品质。

外文标题：Effects of Soil Texture on Rhizosphere Microbial Carbon Source Utilization,Nematode Community and Fruit Sugar of Jackfruit

外文摘要：[Objective]This study aimed to investigate the variations in soil microenvironments with different textures under identical fertilization pattern and their potential relationship with the key fruit quality(sugar content),so as to provide a theoretical foundation for regional orchard fertilization and enhancing yield and quality.[Method]Standardized jackfruit Malaysia No.1 orchards,characterized by consistent fertilization practices and soil textures including loam,sandy loam and sand,was carefully selected for this study.Rhizosphere soil and mature fruit of jackfruit were collected during the tree growing,flower and fruit stages to investigate the variation of metabolic functions of soil microbial communities,nematode community structure,soil physicochemical properties and fruit sugars and potential relationships of them.[Result]The trend of carbon source utilization of soil microorganisms in sandy loam and sandy soil followed the pattern of tree growing stage>flower stage>fruit stage.The carbon source metabolic capacity of soil microorganisms in loamy soils was ranked as fruit stage>tree growing stage>flower stage.The main types of carbon sources utilized by soil microorganisms were carbohydrates,amino acids,carboxylic acids,and polymers.The diversity index of the soil microbial community and nematode abundance in each trophic group were exhibited consistently higher values in sandy soils compared with other soil types,with particularly elevated levels observed during the tree growing and fruit stages.The ecological index of nematode,soil pH and organic matter in loamy soils were generally higher than that in the other two soil types.The glucose content in fruit showed the following order:sandy loam soil>loam soil>sandy soil.The differences in other sugar components among different soil textures were not significant.The sampling stage had a significant direct effect on the diversity of soil nematode communities,and the soil texture had a significant indirect effect and total effect on the sugar content of jackfruit.[Conclusion]The combined application of organic and inorganic fertilizers had different effects on the microecological environment of soils with different textures.The soil texture exerted a direct or indirect influence on the composition and functioning of microbial and nematode communities in rhizosphere soil of jackfruit throughout the tree growing and fruit stages,thereby ultimately impacting both the soil nutrient transformation and fruit quality.

外文关键词：

soil texturejackfruitmicrobial metabolic diversitynematode communityfruit sugar

作者：

苏兰茜、濮秋婕、白亭玉、吴月仙、吴刚、谭乐和、胡雅莉

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作者单位：

中国热带农业科学院香料饮料研究所/国家热带植物种质资源库木本粮食种质资源分库/国家农业科学万宁观测实验站/海南省热带香辛饮料作物遗传改良与品质调控重点实验室/海南省张福锁院士创新平台,海南万宁 571533

云南农业大学热带作物学院,云南普洱 665000

海南省食品检验检测中心(海南省实验动物中心)/国家市场监管重点实验室(热带果蔬质量与安全),海口 570314

关键词：

土壤质地菠萝蜜微生物代谢多样性线虫群落果实糖分

基金：

海南省自然科学基金国家市场监管重点实验室(热带果蔬质量与安全)基础应用研究课题中国热带农业科学院国家热带农业科学中心科技创新团队2021年云南省谭乐和专家工作站

项目编号：

322QN400KF-2023011CATASCXTD202312

出版年：

2024

DOI：

10.3864/j.issn.0578-1752.2024.02.010

中国农业科学

中国农业科学院

中国农业科学

CSTPCD北大核心

影响因子：1.899

ISSN：0578-1752

年,卷(期)：2024.57(2)

参考文献量48