|本期目录/Table of Contents|

[1]于春雷,高嵩,孙文松.连作对辽细辛土壤理化性质和根际微生物群落特征的影响[J].江苏农业科学,2022,50(14):250-258.
 Yu Chunlei,et al.Impacts of continuous cropping on soil physicochemical properties and rhizosphere microbial community characteristics of Asarum heterotropoides[J].Jiangsu Agricultural Sciences,2022,50(14):250-258.
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连作对辽细辛土壤理化性质和根际微生物群落特征的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第50卷
期数:
2022年第14期
页码:
250-258
栏目:
资源与环境
出版日期:
2022-07-20

文章信息/Info

Title:
Impacts of continuous cropping on soil physicochemical properties and rhizosphere microbial community characteristics of Asarum heterotropoides
作者:
于春雷12高嵩12孙文松12
1.辽宁省经济作物研究所,辽宁辽阳 111000; 2.辽宁省农业科学院药用植物研究所,辽宁辽阳 111000
Author(s):
Yu Chunleiet al
关键词:
辽细辛根际土壤微生物群落连作障碍微生物多样性群落结构
Keywords:
-
分类号:
S344.4
DOI:
-
文献标志码:
A
摘要:
连作障碍是制约辽细辛产业发展的瓶颈问题。为探究连作对辽细辛根际土壤微生物多样性、群落结构以及土壤理化性质的影响,以未种植辽细辛土壤为对照,测定不同种植年限土壤理化性质含量,采用Illumina Miseq测序根际土壤的细菌和真菌群落,分析土壤理化性质与微生物群落特征之间的相互关系。连作辽细辛根际土壤中细菌分属于36个门、46个纲、96个目、161个科、282个属;真菌分属于14个门、38个纲、81个目、136个科、194个属。结果表明,连作使土壤pH值和有机质含量逐年下降,碱解氮、有效磷和速效钾含量先增后降,碱解氮和有效磷含量均显著高于对照。随着连续种植年限的增加,变形菌门和拟杆菌门相对丰度明显增加,放线菌门、酸杆菌门和芽单胞菌门相对丰度明显降低;粪壳菌纲和孢霉纲为优势真菌菌群,其丰度呈逐年递减趋势。分析结果表明,土壤碱解氮含量与细菌辛普森指数呈显著负相关,碱解氮含量与香农指数呈显著负相关,速效钾含量与真菌香农指数呈显著正相关;在细菌属水平上,有嗜酸菌属、节杆菌属、罗河杆菌属、褚氏杆菌属和Methylovirgula等优势菌属,种植6年后显著高于对照。而Gaiella、诺卡氏菌属、地杆菌属、罗河杆菌属等优势菌群在对照土壤中丰度最高。连作后根际微生物环境发生改变,影响辽细辛根际益生菌和致病菌群间的平衡关系,从而减少了有益微生物数量,增加了土壤有害微生物数量。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2021-08-14
基金项目:国家现代农业产业技术体系项目;辽宁省农业科技自主创新资金项目(编号:2020CGPY0403);辽宁省农科院学科建设择优支持项目(编号:2019DD144221)。
作者简介:于春雷(1980—),男,黑龙江绥化人,副研究员,主要从事中药材标准化栽培研究。E-mail:zxb_ycl@163.com。
通信作者:孙文松,硕士,研究员,主要从事中药材种质收集保护、品种选育及标准化栽培研究。E-mail:sunwensong12@126.com。
更新日期/Last Update: 2022-07-20