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薇甘菊叶片水提液对土壤钾素活化及酶活性的影响

欧巧菁 杨悦 梁伟杰 孙锋 彭长连

欧巧菁, 杨悦, 梁伟杰, 孙锋, 彭长连. 薇甘菊叶片水提液对土壤钾素活化及酶活性的影响[J]. 华南师范大学学报(自然科学版), 2020, 52(1): 63-69. doi: 10.6054/j.jscnun.2020010
引用本文: 欧巧菁, 杨悦, 梁伟杰, 孙锋, 彭长连. 薇甘菊叶片水提液对土壤钾素活化及酶活性的影响[J]. 华南师范大学学报(自然科学版), 2020, 52(1): 63-69. doi: 10.6054/j.jscnun.2020010
OU Qiaojing, YANG Yue, LIANG Weijie, SUN Feng, PENG Changlian. Effects of Leaf Leachates of the Invasive Plant Mikania micrantha H.B.K. on Soil Potassium Activation and Soil Enzyme Activity[J]. Journal of South China normal University (Natural Science Edition), 2020, 52(1): 63-69. doi: 10.6054/j.jscnun.2020010
Citation: OU Qiaojing, YANG Yue, LIANG Weijie, SUN Feng, PENG Changlian. Effects of Leaf Leachates of the Invasive Plant Mikania micrantha H.B.K. on Soil Potassium Activation and Soil Enzyme Activity[J]. Journal of South China normal University (Natural Science Edition), 2020, 52(1): 63-69. doi: 10.6054/j.jscnun.2020010

薇甘菊叶片水提液对土壤钾素活化及酶活性的影响

doi: 10.6054/j.jscnun.2020010
基金项目: 

国家自然科学基金项目 31870374

国家自然科学基金项目 4190702

详细信息
    通讯作者:

    孙锋, 博士后, Email:sf0204@163.com

    彭长连, 研究员, Email:pengchl@scib.ac.cn

  • 中图分类号: Q55

Effects of Leaf Leachates of the Invasive Plant Mikania micrantha H.B.K. on Soil Potassium Activation and Soil Enzyme Activity

  • 摘要: 为探究薇甘菊(Mikania micrantha H.B.K.)的化感作用, 通过盆栽实验, 研究了不同质量浓度的薇甘菊叶片水提液对薇甘菊及其伴生植物火炭母(Polygonum chinense)根际土壤钾素活化及土壤酶活性的影响.研究结果显示:薇甘菊叶片水提液显著提高了薇甘菊根际土壤的脱氢酶与β-葡糖苷酶活性; 在薇甘菊单种中, 当叶片水提液质量浓度为15.00 g/L时, 薇甘菊的根际土壤速效钾的质量分数是对照(0 g/L)的2.53倍; 而薇甘菊叶片水提液也显著增加了火炭母根际土壤的脱氢酶与β-葡糖苷酶活性; 当叶片水提液质量浓度为15.00 g/L时, 火炭母根际土壤速效钾的质量分数增加了2.03倍, 但其火炭母的地上部分生物量及其钾的质量分数显著下降.上述结果表明:薇甘菊叶片水提液能增强自身根际土壤的酶活性, 并且加速土壤钾养分活化; 但薇甘菊叶片水提液的化感物质可能对火炭母的生长具有抑制作用.这表明薇甘菊化感作用对其入侵具有重要作用.
  • 图  1  薇甘菊叶片水提液对薇甘菊与火炭母根际土壤中解钾菌数量和速效钾质量分数的影响

    注:图中数据为平均值±标准误, n=4, 图 2图 4同.

    Figure  1.  The effect of leaf leachates of M. micrantha on the density of potassium-solubilizing bacteria and available potassium in rhizosphere soil of M. micrantha and P. chinense

    图  2  薇甘菊叶片水提液对薇甘菊与火炭母根际土壤酶活性的影响

    Figure  2.  The effect of leaf leachates of M. micrantha on enzymes activity in rhizosphere soil of M. micrantha and P. chinense

    图  3  薇甘菊叶片水提液对薇甘菊与火炭母生物量的影响

    Figure  3.  The effect of leaf leachates of M. micrantha on biomass of M. micrantha and P. chinense

    图  4  薇甘菊叶片水提液对薇甘菊及火炭母植株中钾质量的影响

    Figure  4.  The effect of leaf leachates of M. micrantha on potassium content in plant of M. micrantha and P. chinense

    表  1  薇甘菊叶片水提液对薇甘菊与火炭母根际土壤pH的影响

    Table  1.   The effect of leaf leachates of M. micrantha on pH in rhizosphere soil of M. micrantha and P. chinense

    物种 薇甘菊叶片水提液的质量浓度/(g·L-1) 根际土壤pH
    薇甘菊 0 7.19±0.04
    3.75 7.00±0.02
    7.50 6.84±0.02
    15.00 6.74±0.02
    火炭母 0 7.12±0.00
    3.75 6.97±0.03
    7.50 7.00±0.04
    15.00 6.96±0.03
    双因素方差分析结果:
    物种 F=12.636, P=0.003
    水提液 F=43.774, P=0.000
    物种×水提液 F=12.257, P=0.000
    注:表中数据为平均值±标准误, n=4.
    下载: 导出CSV
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  • 收稿日期:  2019-05-10
  • 刊出日期:  2020-02-25

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