| 强还原土壤灭菌处理对人参连作土壤细菌群落结构及土壤酶活的影响 |
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| 引用本文： | 闫宁,战宇,苗馨月,王二刚,陈长宝,李琼.强还原土壤灭菌处理对人参连作土壤细菌群落结构及土壤酶活的影响[J].中国农业科技导报,2022,24(6):133-144. |
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| 作者姓名： | 闫宁 战宇 苗馨月 王二刚 陈长宝 李琼 |
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| 作者单位： | 长春中医药大学吉林省人参科学研究院，长春 130117 |
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| 摘 要： | 强还原土壤灭菌（reductive soil disinfestation，RSD）和土壤熏蒸（soil fumigation，SF）是缓解人参连作障碍的常用方法。为研究2种方法对土壤细菌群落和土壤酶活性的影响，采用高通量测序技术和化学分析方法对强还原土壤灭菌加氯化苦熏蒸（RSD+SF）、强还原土壤灭菌加复合菌（RSD+F）、氯化苦熏蒸加复合菌（SF+F）3种方式改良的土壤细菌群落和土壤酶活性进行分析。结果表明，RSD+F组细菌群落多样性与丰富度均最高，SF+F组均最低，3组拥有相同细菌菌属431个。RSD+SF组中，丰富度最高的细菌为Gemmatimonas，其丰富度为9.17%；RSD+F组中丰富度最高的细菌为norank_f_noranko_Gaiellales，其丰富度为8.72%；RSD+F组中丰富度最高的细菌为Bacillus，其丰富度为9.16%；Bacillus为3种方式改良土壤前10种优势菌群中共有的优势菌群。土壤酶活性与土壤细菌群落结构存在显著性关系，随着生长时间的增加，不同方式改良后的连作人参土壤酶活性均具有显著性差异（P<0.05）。由此可知，3种土壤改良方式均能在不同程度地增加有益细菌属的丰富度并提高土壤酶活性，其中RSD+SF组和RSD+F组的有益细菌属数量及土壤酶活性均高于SF+F组。
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| 关 键 词： | 强还原土壤灭菌 高通量测序 土壤细菌群落 土壤酶活性 人参 |
| 收稿时间： | 2021-08-13 |
Effects of Reductive Soil Disinfestation on Soil Bacterial Community Structure and Soil Enzyme Activity in Continuous Cropping of Ginseng |
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| Ning YAN,Yu ZHAN,Xinyue MIAO,Ergang WANG,Changbao CHEN,Qiong LI.Effects of Reductive Soil Disinfestation on Soil Bacterial Community Structure and Soil Enzyme Activity in Continuous Cropping of Ginseng[J].Journal of Agricultural Science and Technology,2022,24(6):133-144. |
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| Authors: | Ning YAN Yu ZHAN Xinyue MIAO Ergang WANG Changbao CHEN Qiong LI |
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| Institution: | Jilin Ginseng Academy，Changchun University of Chinese Medicine，Changchun，130117，China |
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| Abstract: | Reductive soil disinfestation （RSD） and soil fumigation （SF） technologies can control soil-borne diseases more effectively and repair degraded soil quickly. In order to research the effects of 2 technologies on soil bacterial community of continuous cropping ginseng， 3 treatments were set up： reductive soil disinfestation plus soil fumigation （RSD+SF）， reductive soil disinfestation plus compound bacteria （RSD+F） and soil fumigation plus compound bacteria （SF+F）. IlluminaMiseq high-throughput sequencing technology was used to analyze and determine the soil bacterial community and soil enzyme activities by 3 soil modification methods. The results showed that the highest diversity and richness of bacterial community was found in RSD+F group， and those of the lowest was found in SF+F group， and 3 groups had 431 identical bacterial genera. The highest bacterial richness was Gemmatimonas with abundance of 9.17% in RSD+SF group， norank_f_noranko_Gaiellales had the highest bacterial richness with abundance of 8.72% in RSD+F group， and Bacillus had the highest bacterial richness with abundance of 9.16% in RSD+F group. Bacillus was the common dominant bacterial community of the top 10 dominant flora in the soil by 3 improved methods. Correlation analysis showed that the soil enzyme activity significantly correlated with soil bacterial community structure. With the increase of growth time， the soil enzyme activities of continuous cropping ginseng with different soil modification methods were significantly different （P<0.05）. In conclusion， 3 soil improvement methods could increase the richness of beneficial bacteria genus and improve soil enzyme activity to different degrees， and the number of beneficial bacteria genus and soil enzyme activity in RSD+SF group and RSD+F group were higher than those in SF+F group. |
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| Keywords: | reductive soil disinfestation high-throughput sequencing soil bacterial community diversity soil enzyme activities ginseng |
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