| 肖明礼1，刘 高2，韦建玉3，金亚波3，王 军4，王 行4，王 维2.烤烟根系分泌物对植烟土壤酶及养分活化作用的影响[J].广东农业科学,2017,44(12):59-66 |
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烤烟根系分泌物对植烟土壤酶及养分活化作用的影响 |
| Effects of root exudates of flue-cured tobacco on soil enzymes and nutrient activation in tobacco planting |
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| DOI：10.16768/j.issn.1004-874X.2017.12.010 |
| 中文关键词: 根系分泌物 土壤团聚体 酶活性 土壤养分 有机质 |
| 英文关键词: root exudates soil aggregate enzyme avtivity soil nutrient organic matter 普 |
| 基金项目:广东中烟工业有限责任公司科技计划项目（15XM-QK〔201502〕）；广西中烟工业有限责任公司科技
计划项目（201545000034017） |
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| 摘要点击次数: 2347 |
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| 中文摘要: |
| 为探究不同浓度烤烟根系分泌物处理对植烟土壤酶活性及养分的影响，以广西河池市罗城县
植烟田0～20 cm 耕作层土壤为试验材料，将获取的烤烟根系分泌物浓缩液配置成低、中、高3 种浓度梯度
均匀滴入土壤，分别于培养5、15、30 d 时采集土样，测定土壤团粒结构、土壤酶活性及土壤养分含量。结果
表明：根系分泌物可有效增加土壤大团聚体数量，降低土壤有机质含量，提高土壤速效磷、速效钾、速效氮
含量；增强了土壤过氧化氢酶、多酚氧化酶、脲酶、磷酸酶、蔗糖转化酶活性；土壤酶活性与土壤养分密切
关系，脲酶、磷酸酶和蔗糖转化酶均与土壤养分呈显著相关。综合分析认为，烤烟根系分泌物可有效增加土
壤水稳性团聚体比例，并通过影响酶活性而影响土壤养分释放、改善土壤肥力状况，为根系营造良好的生
态微环境。 |
| 英文摘要: |
| In order to investigate the effects of root exudates treated with different concentrations of flue-cured
tobacco on the soil enzyme activity and nutrient content of flue-cured tobacco，the 0-20 cm tillage layer of Luocheng
county，Hechi city，Guangxi province was used as the experimental material to set the root exudates of flue，the soil
concentration，soil enzyme activity and soil nutrient content were measured at 5 days，15 days and 30 days after
soil concentration. The results showed that root exudates could effectively increase the number of large aggregates
in soil，the soil organic matter content could be significantly reduced，and the contents of available phosphorus，
available potassium and available nitrogen increased；soil catalase，Polyphenol oxidase，urease，phosphatase and sucrose converting enzyme enhanced. Soil enzyme activity was closely related to soil nutrient，especially urease，
phosphatase and sucrose converting enzyme were significantly correlated with soil nutrient. The results showed that
the root exudates of flue-cured tobacco could effectively increase the proportion of soil water-stable aggregates and
improve the soil fertility status by affecting the activity of soil nutrients and improve the soil fertility，and create a good
ecological environment for the roots. |
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