| 我国南方红壤酸化问题及改良修复技术研究进展 |
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| 引用本文： | 芦 美, 范茂攀, 李永梅, 杨继芬, 杨春怀, 罗志章, 赵吉霞. 玉米与马铃薯间作对作物根际土壤丛枝菌根真菌群落的影响[J]. 土壤通报, 2023, 54(6): 1392 − 1400. DOI: 10.19336/j.cnki.trtb.2022052703 |
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| 作者姓名： | 芦美 范茂攀 李永梅 杨继芬 杨春怀 罗志章 赵吉霞 |
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| 作者单位： | 云南农业大学资源与环境学院，云南 昆明 650201 |
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| 基金项目： | 国家自然科学基金（41661063；42007002）、云南省科技重大专项子课题（2019ZG00902-08）资助 |
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| 摘 要： | 目的 研究间作对作物根际土壤理化性质、球囊霉素相关土壤蛋白含量和AMF群落的影响，为我国南方红壤坡耕地种植模式的选择提供理论依据。 方法 以红壤坡耕地为研究对象，设置玉米单作、马铃薯单作、玉米与马铃薯间作3个处理，分析各作物在不同种植模式下其根际土壤理化性质、球囊霉素相关土壤蛋白含量、AMF群落的组成和多样性的变化，以及各指标之间的相互关系。 结果 玉米、马铃薯间作与单作相比均显著增加了两种作物根际土壤总球囊霉素和易提取球囊霉素含量，增加幅度为10.5% ~ 30.1%。玉米间作与玉米单作相比根际土壤有机质含量显著降低了10.6%，马铃薯间作与马铃薯单作相比根际土壤有机质和速效磷含量分别显著增加了13.5%和46.5%。玉米间作相比于玉米单作其根际土壤AMF群落特有的操作分类单元数量有增加趋势，而马铃薯间作相比马铃薯单作有降低趋势。非度量多维尺度法分析结果表明，种植模式较明显的改变了玉米根际土壤中AMF的群落组成，但没有明显改变马铃薯根际土壤中AMF的群落组成。玉米间作与玉米单作相比根际土壤AMF群落的Chao1指数显著增加了9.3%，香农指数有增加趋势，其值为1.3%，辛普森指数有降低趋势，其值为7.6%。马铃薯间作与马铃薯单作相比根际土壤AMF群落的辛普森指数有增加趋势，其值为53.3%，Chao1指数显著降低了10.8%，香农指数有降低趋势，其值为10.6%。在玉米、马铃薯的各处理中，根际土壤AMF群落优势属为巨孢囊霉属、无梗囊霉属和根孢霉属。冗余分析得出，pH是影响作物根际土壤AMF群落丰度、α多样性指数和球囊霉素相关土壤蛋白含量的主要因素。 结论 玉米与马铃薯间作可显著增加作物根际土壤的球囊霉素相关土壤蛋白含量，提高玉米根际土壤AMF群落组成的多样性，这一研究结果可为云南省红壤坡耕地种植模式的选择提供理论依据。
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| 关 键 词： | 玉米 马铃薯 间作 丛枝菌根真菌 群落多样性 球囊霉素相关土壤蛋白 |
| 收稿时间： | 2022-05-27 |
| 修稿时间： | 2022-10-23 |
Plant root and mycorrhizal fungal traits for understanding soil aggregation |
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| LU Mei, FAN Mao-pan, LI Yong-mei, YANG Ji-fen, YANG Chun-huai, LUO Zhi-zhang, ZHAO Ji-xia. Effects of Intercropping Maize and Potato on Arbuscular Mycorrhizal Fungi Community in Crop Rhizosphere Soil[J]. Chinese Journal of Soil Science, 2023, 54(6): 1392 − 1400. DOI: 10.19336/j.cnki.trtb.2022052703 |
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| Authors: | LU Mei FAN Mao-pan LI Yong-mei YANG Ji-fen YANG Chun-huai LUO Zhi-zhang ZHAO Ji-xia |
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| Affiliation: | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China |
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| Abstract: | Objective Arbuscular mycorrhiza fungi (AMF) is a kind of endophytic fungi belonging to Ascomycota, which can not only promote the growth of host plants, improve the stress resistance of plants and maintain the stability of soil ecosystem, but also increase soil erosion resistance by glomalin-related soil protein produced by its hyphae and spores. The growth and development of AMF are affected by planting patterns. Therefore, this study revealed the effects of intercropping on the physical and chemical properties of crop rhizosphere soil, glomalin-related soil protein content and AMF community, and provided a theoretical basis for the selection of planting patterns in red soil sloping farmland in southern China. Method The red soil sloping farmland was taken as the research object, and three treatments of maize monoculture, potato monoculture, and maize-to-potato intercropping were set to analyze the changes of rhizosphere soil physical and chemical properties, glomalin-related soil protein content, AMF community composition and diversity of each crop under different planting patterns, as well as the relationship between each index. Result Compared with monoculture, maize and potato intercropping significantly increased the contents of total glomalin and extractable glomalin in rhizosphere soil of two crops, with an increase of 10.5% - 30.1%. Rhizosphere soil organic matter content of maize intercropping decreased by 10.6% compared with maize monoculture, while rhizosphere soil organic matter and available phosphorus content of potato intercropping increased by 13.5% and 46.5% compared with potato monoculture. Compared with maize monoculture, the number of operational taxonomic units specific have increasing trend to rhizosphere soil AMF community of maize intercropping, while the potato intercropping has a decreasing trend compared with potato monoculture. Nonmetric multidimensional scaling analysis results showed that planting patterns significantly changed the community composition of AMF in maize rhizosphere soil, but did not significantly change the community composition of AMF in potato rhizosphere soil. Compared with monoculture maize, Chao1 of AMF community in rhizosphere soil of intercropping maize significantly increased by 9.3%, Shannon index increased by 1.3%, Simpson index decreased by 7.6%. Compared with potato monoculture, the Simpson index of AMF community in rhizosphere soil increased by 53.3%, Chao1 index significantly decreased by 10.8%, and Shannon index decreased by 10.6%. In each treatment of maize and potato, the dominant genera of rhizosphere soil AMF community were Gigaspora, Acaulospora and Rhizophagus. Redundant analysis showed that pH was the main factor affecting the abundance of AMF community, α diversity index and GRSP content in crop rhizosphere soil. Conclusion The intercropping of maize and potato significantly increased the glomalin-related soil protein content and the diversity of AMF community composition in maize rhizosphere soil. The results can provide a theoretical basis for the selection of planting patterns of red soil sloping farmland in Yunnan Province. |
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| Keywords: | Maize Potato Intercropping Arbuscular mycorrhiza fungi Community diversity Glomalin-related soil protein |
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