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种植模式对当归根际土壤真菌群落与功能类群的影响

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再植障碍问题限制了当归产业健康发展。为了建立高效种植方式，在甘肃渭源县设置 5 种种植方式[A:豌豆-小麦-当归;B:豌豆-蒙古黄芪-当归;C:豌豆-马铃薯-当归;D:豌豆-当归-当归(对照);E:豌豆-休耕-当归]，采挖期通过Illumina Hisqe 2500 高通量测序平台测定了不同种植模式下当归根际土壤真菌ITS1 变异区的基因序列，分析不同种植方式对当归根际土壤真菌群落和功能差异性的影响。结果表明:(1)5种种植方式下当归根际真菌多样性差异不大，较对照D处理，A、B、C和E处理的Chao1指数、Ace指数和Shannon指数较低，Simpson指数较高。(2)5种种植方式下当归根际土壤真菌群落隶属于11门167属，其中，子囊菌门(Ascomycota)、被孢菌门(Mortierellomycota)、担子菌亚门(Basidiomycota)和壶菌门(Chytridiomycota)为优势门;被孢霉属(Mortierella)、四枝孢属(Tetracladium)为优势属。(3)冗余度分析发现:在门水平影响土壤真菌群落结构组成的主要因子为速效钾、电导率、pH值，在属水平影响土壤真菌群落结构组成的主要因子为有机质、pH值、二氧化碳呼吸速率。(4)FUNGuild预测表明:植物病原体和木质腐生真菌功能群的相对丰度较高。综上所述，不同作物轮作较当归连作，降低了当归根际土壤真菌群落的相对丰度和多样性，有利于根际土壤真菌群落向有益的方向发展。
Effects of cropping pattern on soil fungal community and functional groups in rhizosphere soil of Angelica sinensis
The problem of replanting obstacle limits the healthy development of Angelica sinensis industry.In order to establish an efficient planting method,five planting methods were established in Weiyuan county,Gansu province,including A:pea-wheat-A.sinensis;B:pea-Mongolian astragalus-A.sinensis;C:pea-potato-A.sinensis;D:pea-A.sinensis-A.sinensis(control);E:pea-fallow-A.sinensis.The gene sequences of ITS1 variation region of fungi in the rhizosphere soil under different cropping patterns were determined during A.sinensis harvest period by Illumina Hisqe 2500 sequencing platform,and the effects of different cropping patterns on fungal communities and functional differences in the rhizosphere soil were analyzed.The results showed as follows:(1)Compared to the control D,the Chao1 index,Ace index and Shannon index for A,B,C and E treatments were lower,but the Simpson index was higher.(2)Soil fungi communities in the rhizosphere under five planting methods attached to 167 genera in 11 phyla,in which Ascomycota,Mortierellomycota,Basidiomycota and Chytridiomycota were the dominant phyla and Mortierella and Tetracladium were the dominant genera.(3)Redundancy analysis showed that available potassium,electrical conductivity,and pH value were the main factors affecting soil fungal community structure at phylum level,while organic matter,pH value,and carbon dioxide respiration rate were the main factors affecting soil fungal community structure at genus level.(4)FUNGuild prediction showed that the relative abundances of functional groups of plant pathogens and woody saprophytic fungi were higher.In conclusion,compared with continuous cropping A.sinensis,different crops rotation reduced the relative abundance and diversity of fungal communities in the rhizosphere soil,which was conducive to the profitable development of soil fungal communities in the rhizosphere soil.

soil fungisoil fungal communityfunctional groupscrop rotationcontinuous cropping

姜小凤、郭凤霞、陈垣、郭建国

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甘肃省农业科学院旱地农业研究所/植物保护研究所,甘肃 兰州 730070

甘肃省旱作区水资源高效利用重点实验室,甘肃 兰州 730070

甘肃农业大学生命科学技术学院/农学院,甘肃 兰州 730070

土壤真菌 真菌群落 功能群 轮作 连作

甘肃省科技计划民生科技专项乡村振兴专项甘肃省农科院农业科技自主创新专项重点研发计划现代丝路寒旱农业科技支撑计划国家重点研发计划子课题国家重点研发计划子课题国家重点研发计划子课题国家自然科学基金国家自然科学基金国家自然科学基金

22CX2NA0072021GARS11GSLK-2022-62021YFD11005042021YFD110050412021YFD11005042314605473156017531360317

2024

10.11838/sfsc.1673-6257.22802

中国土壤与肥料
中国农业科学院农业资源与农业区划研究所 中国植物营养与肥料学会

中国土壤与肥料

CSTPCD北大核心
影响因子：1.197
ISSN：1673-6257
年,卷(期)：2024.(1)
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