秦艽不同种植年限对根际土壤微生物群落结构影响的研究
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S567.9

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固原市科技研发项目(2020GYKYF011);宁夏回族自治区农业科技自主创新资金项目(NGSB-2021-16-05);宁夏回族自治区农业种质资源库基础条件建设项目(2022DPC05001)


Effect of Gentiana on Soil Microbial Community Structure in Different Planting Years
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    摘要:

    为了揭示秦艽不同种植年限对根际土壤微生物群落结构的影响,利用Biolog-ECO板的方法,开展了秦艽不同种植年限对根际土壤酶活性、土壤微生物群落平均颜色变化率(AWCD)、土壤微生物群落丰富度和土壤微生物群落多样性指数影响的研究。结果表明,0~20 cm土层,栽培秦艽3年的土壤脲酶活性和蔗糖酶活性最高,种植3、5、7年的土壤过氧化氢酶活性差异不显著;土壤微生物群落多样性(Shannon)指数随着种植年限的延长也呈现逐渐下降的趋势;土层AWCD随培养时间的延长呈现逐步增加的趋势。土壤微生物碳源整体利用能力大小顺序为:种植3年>种植1年>种植5年>种植7年>CK,且不同种植年限下0~20 cm土层土壤微生物群落的碳源利用能力均高于20~40 cm土层。秦艽作为以根茎入药的中药材,长期连作种植对土壤酶活性、微生物群落AWCD、微生物群落丰富度及微生物群落多样性有较大影响,因此,人工栽培秦艽应在充分满足其生态和环境生长要求的基础上,合理增加土壤微生物总量,可提高秦艽产量。

    Abstract:

    In order to reveal the effects of different planting years of Gentiana on soil microbial community structure and to provide theoretical basis for artificial cultivation of Gentiana, the effects of Gentiana on soil enzyme activity,soil microbial community AWCD, soil microbial community richness and soil microbial community diversity index were studied by using Biolog-Eco plate method.The results showed that in 0-20 cm soil layer, soil urease activity and sucrase activity reached the highest in the 3rd year of cultivation, while there was no significant difference in soil catalase activity in the 3rd, 5th and 7th years, and soil enzyme activity was higher than CK in all planting years.Shannon index also showed a decreasing trend with the extension of planting years. At the same time, AWCD in 0-20 cm soil layer showed a trend of gradual increase with the extension of culture time, and the overall utilization capacity of soil microbial carbon sources was in the following order: 3 years of planting > 1 year of planting > 5 years of planting > 7 years of planting >CK, and the carbon source utilization capacity of soil microbial community in 0-20 cm soil layer was higher than that in 20-40 cm soil layer under different planting years. As a traditional Chinese herbal medicine, long-term continuous cultivation of Gentiana has a great impact on soil enzyme activity, AWCD value, abundance and diversity of microbial community. Therefore, it is suggested that artificial cultivation of Gentiana should fully meet the ecological and environmental growth requirements, and reasonably change the cultivation environment to increase the total amount of soil microorganisms, which can increase the yield of Gentiana.

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王晓军,李和明,马廷吉,丁鹏,马廷菊,马远.秦艽不同种植年限对根际土壤微生物群落结构影响的研究[J].东北农业科学,2024,49(6):45-49.

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  • 收稿日期:2024-07-22
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  • 在线发布日期: 2025-01-18
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