文章摘要
曲成闯,陈效民,韩召强,张俊,黄春燕,刘云梅.生物有机肥对潮土物理性状及微生物量碳、氮的影响[J].水土保持通报,2018,38(5):70~76
生物有机肥对潮土物理性状及微生物量碳、氮的影响
Effects of Bioorganic Fertilizer Application on Soil Physical Properties and Microbial Biomass Carbon and Nitrogen in Fluvoaquic Soil
投稿时间:2018-04-23  修订日期:2018-05-29
DOI:10.13961/j.cnki.stbctb.2018.05.012
中文关键词: 生物有机肥  潮土  物理特性  微生物量碳、氮
英文关键词: bioorganic fertilizer  fluvoaquic soil  physical properties  microbial biomass carbon and nitrogen
基金项目:国家重点研发计划项目“耕地地力影响化肥养分利用的机制与调控”(2016YFD0200305)
作者单位E-mail
曲成闯 南京农业大学 资源与环境科学学院, 江苏 南京 210095  
陈效民 南京农业大学 资源与环境科学学院, 江苏 南京 210095 xmchen@njau.edu.cn 
韩召强 南京农业大学 资源与环境科学学院, 江苏 南京 210095  
张俊 如皋市农业科学研究所, 江苏 如皋 226500  
黄春燕 如皋市农业科学研究所, 江苏 如皋 226500  
刘云梅 如皋市农业科学研究所, 江苏 如皋 226500  
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中文摘要:
      [目的]研究生物有机肥对潮土不同土层土壤物理特性及微生物碳氮的影响,为生物有机肥在土壤改良、水土保持和促进设施农业可持续发展等方面提供科学依据。[方法]采用田间小区试验的方法,研究生物有机肥对潮土0—15和15—30 cm土层土壤水力学性质、土壤团聚体及微生物量碳、氮的改善效果,其中生物有机肥施用量分别为0,10,20 t/hm2。[结果]施用生物有机肥可显著降低土壤容重,提高土壤孔隙度和各水力学指标,其中土壤容重降低了10.37%~19.26%,田间持水量和饱和导水率提高了13.12%~32.25%和37.28%~67.11%;生物有机肥可提高土壤大团聚体含量和平均质量直径,降低分形维数;生物有机肥提高了土壤微生物量碳、氮含量,增幅分别为33.66%~52.67%和11.52%~22.64%;土壤物理特性与微生物量碳、氮具有明显相关性。[结论]生物有机肥可有效改善潮土土壤结构和水力学特性,增加土壤蓄水供水能力,提高土壤大团聚体含量、稳定性和微生物量碳、氮含量。
英文摘要:
      [Objectives] To study the effects of bioorganic fertilizer application on soil physical properties and microbial biomass carbon and nitrogen in different soil layers, in order to provide scientific data for applying bioorganic fertilizer in soil improvement, soil and water conservation and the sustainable development of agricultural facilities.[Methods] Field soil tests were conducted to study the effects of bioorganic fertilizers on soil hydraulic properties, aggregate and microbial biomass carbon and nitrogen in 0-15 and 15-30 cm soil layers of fluvoaquic soil. The application rates of bioorganic fertilizer were 0, 10 and 20 t/hm2, respectively.[Results] The application of bio-organic fertilizer could significantly reduce soil bulk density, increase soil porosity and hydraulics indexes. The soil bulk density decreased by 10.37%~19.26%, the field capacity and saturated hydraulic conductivity increased by 13.12%~32.25% and 37.28%~67.11%, respectively. Bioorganic fertilizer could also increase the content and average mass diameter of soil aggregates and reduce the fractal dimension of aggregates. Application of bio-organic fertilizer could increase the content of soil microbial biomass carbon and nitrogen by 33.66%~52.67% and 11.52%~22.64%, respectively. Soil physical properties had a significant correlation with microbial biomass carbon and nitrogen.[Conclusions] Application of bioorganic fertilizer can effectively improve the structure and hydraulic characteristics of fluvoaquic soil, increase the capacities of soil water storage, improve soil aggregate content, stability and microbial biomass carbon and nitrogen content.
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