| 植物覆盖对蕉园土壤微生物群落功能多样性的影响 |
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| 引用本文： | 魏加弟,王永芬,何翔,杨佩文,俞艳春,郑泗军,徐胜涛. 植物覆盖对蕉园土壤微生物群落功能多样性的影响[J]. 中国农学通报, 2022, 38(17): 90-97. DOI: 10.11924/j.issn.1000-6850.casb2021-0672 |
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| 作者姓名： | 魏加弟 王永芬 何翔 杨佩文 俞艳春 郑泗军 徐胜涛 |
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| 作者单位： | 1.云南省农业科学院农业环境资源研究所,昆明 650205;2.云南农业大学动物科学技术学院,昆明 650201;3.云南省农业科学院热带亚热带经济作物研究所,云南保山 678000;4.国际生物多样性中心,昆明 650205 |
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| 基金项目： | 云南省万人计划“青年拔尖人才”项目;国家自然科学基金青年科学基金项目“植物覆盖对蕉园土壤微生物群落结构和生产力的影响机制”(31600349);国家香蕉产业技术体系“红河试验站”和 “保山试验站”(CARS-32-20) |
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| 摘 要： | 蕉园地表裸露造成土壤肥力下降是阻碍香蕉产业可持续发展的重要因素之一。植物覆盖是缓解蕉园土壤肥力下降的有效措施,土壤微生物群落功能多样性能够敏感反应土壤的质量变化,是土壤质量变化的重要衡量指标。本研究以香蕉园常规种植方式（行间地表裸露）为对照,以行间自然生杂草覆盖和人工种植大翼豆[Macroptilium atropurpureum (DC.) Urb.]覆盖为处理,利用微生物Biolog鉴定技术研究植物覆盖措施对蕉园土壤微生物功能多样性的影响。结果表明：不同植物覆盖处理下,蕉园土壤微生物对碳源的利用能力有显著差异,结果表现为大翼豆覆盖(CP)>自然生杂草覆盖(NW)>无覆盖(CK)。与行间地表裸露对比,植物覆盖显著(P<0.05)提高了蕉园土壤微生物的Richness Index、Shannon-Wiener和Simpson指数;蕉园土壤微生物对糖类、氨基酸类和羧酸类的利用率高,其中自然生杂草覆盖下土壤微生物偏向利用羧酸类碳源,大翼豆覆盖土壤微生物偏向利用糖类及氨基酸类碳源。不同覆盖植物对土壤微生物功能多样性影响差异显著,大翼豆覆盖较自然生杂草更能改善土壤微生物群落多样性,在蕉园裸露行间人工种植大翼豆的方法可有效减轻土壤退化程度,以植物多样性促进土壤微生物多样性的提高,可促进香蕉园土壤健康可持续利用。
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| 关 键 词： | 植物覆盖 香蕉 土壤微生物 Biolog-ECO 土壤肥力 |
| 收稿时间： | 2021-07-06 |
Effect of Plant Covering on Soil Microbial Community Functional Diversity Under Banana Cropping System |
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| WEI Jiadi,WANG Yongfen,HE Xiang,YANG Peiwen,YU Yanchun,ZHENG Sijun,XU Shengtao. Effect of Plant Covering on Soil Microbial Community Functional Diversity Under Banana Cropping System[J]. Chinese Agricultural Science Bulletin, 2022, 38(17): 90-97. DOI: 10.11924/j.issn.1000-6850.casb2021-0672 |
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| Authors: | WEI Jiadi WANG Yongfen HE Xiang YANG Peiwen YU Yanchun ZHENG Sijun XU Shengtao |
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| Affiliation: | 1.Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205;2.Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201;3.Institute of Tropical and Subtropical Cash Crops, Yunnan Academy of Agricultural Sciences, Baoshan, Yunnan 678000;4.Bioversity International, Kunming 650205 |
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| Abstract: | Bared soil causes the decline of soil fertility in the banana cropping system, which is one of the crucial factors limiting the sustainable development of banana industry. Plant covering could be an effective way to alleviate the decline of soil fertility in banana cropping system. The functional diversity of soil microbial communities could sensitively reflect the variation of soil properties, and is an important indicator for assessing soil quality. In this study, conventional planting method with bare soil between rows was used as control (CK), natural weeds covering (NW) and artificially planted legumes [Macroptilium atropurpureum (DC.) Urb.] covering (CP) were taken as the treatments in banana cropping system. The effects of plant covering on the functional diversity of soil microorganisms under banana cropping system were studied with microbial Biolog identification technology. The results showed that the carbon utilization of soil microorganisms had significant differences under different covering plants, ranked as: CP> NW> CK. Compared with CK, plant covering significantly (P<0.05) improved the Richness Index, Shannon-Wiener Index and Simpson Index of soil microorganisms under banana cropping system; the soil microorganisms showed a high utilization rate of sugars, amino acids and carboxylic acids. The soil microorganisms under NW showed better utilization of carboxylic acid carbon sources, and the soil microorganisms under CP showed better utilization of sugars and amino acid carbon sources. Different covering plants had significantly affected soil microbial community functional diversity under banana cropping system. Compared with CK, CP could improve the soil microbial community and effectively mitigate the degree of soil degradation. Promoting soil microbial diversity by covering plant diversity, the healthy and sustainable utilization of soil could be achieved in banana industry. |
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| Keywords: | plant covering banana soil microorganism Biolog-ECO soil fertility |
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