桃园生草对土壤有机碳及活性碳库组分的影响

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 桃园生草对土壤有机碳及活性碳库组分的影响 DOI: 10.5846/stxb201301240144 作者: 作者单位: 浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江省农业科学院环境资源与土壤肥料研究所,浙江大学环境与资源学院资源科学系,浙江省农业科学院环境资源与土壤肥料研究所 作者简介: 通讯作者: 中图分类号: 基金项目: 浙江省重大科技专项（2009C12012）；国家公益性行业专项（201303095）；国家桃产业技术体系杭州综合试验站（CARS-31-Z-06） Effects of interplanting grass on soil organic carbon and active components of carbon pool in peach orchard Author: Affiliation: Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,,,Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,,,,Department of Resource Science,College of Environmental and Resource Science,Zhejiang University,Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:果园生草是解决传统清耕引起的水土流失、土壤有机质减少、土壤肥力下降和果品品质变劣的果园地面管理措施之一。阐明不同牧草种类对土壤有机碳及其活性组分的影响是实现果园土壤生态管理、促进有机果品生产技术体系完善和果园土壤质量提高过程中亟待解决的问题。通过研究桃园人工种植黑麦草和毛苕子对土壤总有机碳（TOC）及其活性组分（微生物量碳（MBC）、水溶性有机碳（WSOC）、轻组有机碳（LFOC）、重组有机碳（HFOC）以及团聚体有机碳）的影响，探明豆科牧草与禾本科牧草种植对桃园土壤有机碳及其组分的影响及其差异。结果表明：与清耕对照（CK）相比，种植黑麦草后土壤TOC、MBC和WSOC分别提高了5.13%、76.4% 和18.1%，种植毛苕子土壤LFOC提高了11.3%，土壤HFOC降低了13.2%，但对土壤TOC、MBC和WSOC未产生显著影响。此外，黑麦草显著提高土壤较大粒级（> 74 μm）团聚体有机碳含量，而毛苕子则显著降低土壤较小粒级（< 2000 μm）团聚体有机碳含量。对提高TOC而言，在桃园种植禾本科牧草黑麦草优于豆科牧草毛苕子。土壤MBC、WSOC、LFOC以及HFOC可以作为指示桃园土壤质量提高与否、表征土壤有机碳变化的敏感指标。 Abstract:Interplanting grass is one of the important orchard floor management measures for avoiding negative potential effects, such as soil erosion, soil organic matter decrease, soil fertility reduction and deterioration of fruit quality induced by traditional orchard clean cultivation activities. The effect of interplanting grass on soil organic carbon and its active components is very critical for implementing soil ecological management, promoting the system of organic fruit production and improving the soil quality in orchards. Therefore, this study focused on addressing the issues relating to the effect of interplanting ryegrass (Lolium perenne L.) and hair vetch (Vicia villosa Roth) in peach orchard on soil total organic carbon (TOC) and its fractions, including microbial biomass carbon (MBC), water-soluble organic carbon (WSOC), light fraction organic carbon (LFOC), heavy fraction organic carbon (HFOC) and aggregates organic carbon. The results showed that compared to the clean cultivation control (CK), TOC, MBC and WSOC in interplanting ryegrass treatment (RG) were significantly increased by 5.13%, 76.4% and 18.1%, respectively. For hair vetch treatment (HV), LFOC and HFOC were significantly increased by 11.3% and decreased by 13.2% respectively when they are compared with CK. However, soil TOC, MBC and WSOC had no significant changes in HV. In addition, RG significantly raised the content of larger size fraction (> 74 μm) aggregates of soil organic carbon, and reduced the smaller size fraction (< 2000 μm). As for TOC improvement effect, interplanting ryegrass seemed to be better than hair vetch in peach orchard. MBC, WSOC, LFOC and HFOC can be served as sensitive indices for characterizing the changes of soil quality and soil organic carbon in peach orchards. 参考文献 相似文献 引证文献