果草套种对南方丘陵山地表层土壤微生物量碳氮及酶活性的影响
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国家科技支撑计划项目"漓江流域遥感动态评估与监管技术体系研究;漓江流域面源污染和水土流失治理技术研究与示范"(2012BAC16B01/2);广西科技攻关计划项目(1298006-2);广西科学院基本科研业务费(13YJ22ZWS22);广西植物研究所基本业务费(13010;12001)


Effects of Fruit and Grass Intercropping on Soil Microbial Biomass C, N and Soil Enzyme Activities in Hilly Lands of Southern China
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    摘要:

    [目的] 探究不同果草套种模式下0-10 cm土层土壤微生物量碳、氮及酶活性的差异,为改善土壤肥力条件、促进桂林旅游城市生态循环农业经济的发展提供理论依据。[方法] 在桂林潮田河流域大山口农业综合示范区内设置样地,采集表层(0-10 cm)土壤样品,测定与分析不同果草套种模式下表层土壤微生物量碳、氮及酶活性的差异。[结果] 0-10 cm土层土壤氮磷钾、土壤微生物量碳氮和土壤酶活性大小基本表现为:阳朔金桔+牧草 >桂橙1号+牧草 >翠冠梨+牧草 >对照样地。其中,阳朔金桔+牧草模式对0-10 cm土层土壤微生物量碳、氮含量和土壤酶活性的影响最为明显(p<0.05)。相关性分析表明,土壤微生物量碳氮和3种土壤酶活性存在极显著正相关关系。[结论] 果草套种模式特别是阳朔金桔+牧草模式对南方丘陵山地表层土壤肥力条件的改善作用较为明显。

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    [Objection] Differences of soil microbial biomass carbon, nitrogen and soil enzyme activities in different patterns of fruit and grass intercropping were compared in order to provide a support for soil fertility melioration and agriculture modernization.[Methods] Top soil layer(0-10 cm) from four patterns of fruit and grass intercropping was sampled in sites of Dashankou comprehensive agriculture demonstration zone, which located at Chaotian watershed of Guilin area. Variance and correlation analyses were used to compare the differences of soil microbial biomass carbon, nitrogen and soil enzyme activities.[Result] Soil total nitrogen, total phosphorus, total potassium and their available components, soil microbial biomass carbon, nitrogen and soil enzyme activities behaved almost similar ranks as:Fortunella margarita+grass >Guicheng No.1+grass >Pyrus spp+grass >control plot. Pattern of Fortunella margarita+grass intercropping had significant effects on soil microbial biomass carbon, nitrogen and soil enzyme activities(p<0.05). This pattern ameliorated soil better than other patterns did. There existed positive correlations between soil microbial biomass carbon, biomass nitrogen and soil enzyme activities.[Conclusion] Fruit and grass intercropping, especially the pattern of Fortunella margarita+grass, had significant effects on soil amelioration in hilly lands in the southern of China.

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姚月锋,徐广平,黄玉清,莫凌.果草套种对南方丘陵山地表层土壤微生物量碳氮及酶活性的影响[J].水土保持通报,2015,35(6):53-57

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  • 收稿日期:2014-10-31
  • 最后修改日期:2014-12-04
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  • 在线发布日期: 2016-04-05
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