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寿光设施菜田碳、氮演变及其对土壤性质的影响 被引量:26

Changes of soil carbon and nitrogen in Shouguang intensive vegetable production fields and their impacts on soil properties
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摘要 寿光菜田土壤质量衰退的情况日趋严重,直接影响到了蔬菜产业的可持续发展。土壤碳、氮的演变调控着土壤中的物理、化学和生物学过程。为了明确寿光菜田土壤碳、氮演变及其对土壤性质的影响,通过野外调查和室内土壤碳、氮分析,得出以下结论:与附近粮田相比,寿光菜田的土壤C/N比下降了2.4个单位,有机质增加了4.1g/kg,全氮增加了0.61 g/kg,土壤全氮的增长量是有机质增长量的2倍。设施菜田土壤NO3--N的显著升高不是菜田土壤C/N比下降的根本原因。菜田土壤碳素输入的量是粮田输入量的1.9倍,设施菜田氮素投入量分别是小麦和玉米的9.9和8.5倍。设施菜田投入的C/N比为4.2∶1,粮田的为9.9∶1,菜田碳、氮投入比例低可能是菜田土壤C/N比下降的重要原因。土壤碳、氮含量的增加和C/N比的下降,伴随着菜田土壤明显的酸化和盐渍化,同时也伴随着土壤氮磷钾养分的富集。 Soil quality deterioration in Shouguang vegetable fields has become more serious,which directly affects the sustainable development of vegetable production.Variations of soil carbon and nitrogen will influence soil physical,chemical and biological processes,and the objective of this research is to have a better understanding of these influences.The results of this research indicated that C/N ratio,organic matter and total nitrogen in Shouguang vegetable fields were 2.4 unit lower,4.1 g/kg and 0.61 g/kg higher than that in the grain fields,respectively.The increased amount of soil total nitrogen was two times higher than that of organic matter.Dramatic increase in NO3^--N content in protective fields was not the critical reason for the decrease in C/N ratio in vegetable fields.Carbon input in vegetable fields was 1.9 times higher than that in grain crop fields,and nitrogen input in protective fields was 9.9 and 8.5 times higher than that in wheat and grain crop fields,respectively.The ratio of input carbon and nitrogen was 4.2∶1 in protective fields and 9.9∶1 in grain fields,respectively.The lower ratio of carbon and nitrogen input in vegetable fields may be the important reason for the decrease in C/N ratio in those soils.The increase in soil carbon and nitrogen contents and the decrease in C/N ratio obviously induced soil acidification,stalinization and accumulation of soil nitrogen,phosphorus and potassium in vegetable fields.
出处 《植物营养与肥料学报》 CAS CSCD 北大核心 2008年第5期914-922,共9页 Journal of Plant Nutrition and Fertilizers
基金 农业部“948”项目“土壤养分管理技术引进与建立”(2006-G60) 中国农业大学科研启动基金项目(2007019)资助
关键词 寿光 设施菜田 C/N比 土壤性质 Shouguang county protected vegetable field carbon to nitrogen ratio soil property
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参考文献25

  • 1Haynes R J. Labile organic matter fractions as central components of the quality of agricultural soils: An overview [J]. Adv. Agron., 2005, 85: 221-268.
  • 2Fred M, Ray R W. Soil organic matter in sustainable agriculture[ M]. Am. Soc. Agron., 2004: 83-87.
  • 3Davidson E A, Janssens I A. Temperature sensitivity of soil carbon decomposition and feedbacks to climate change[ J]. Nature, 2006, 440: 165-173.
  • 4Lal R. Soil carbon sequestration impacts on global climate change and food security[J]. Sci., 2004, 304: 1623-1627.
  • 5Batjes N H. Total carbon and nitrogen in the soils of the world [ J ]. Eur. J. of Soil Sci., 1996, 47: 151-163.
  • 6Glendining M J, Powson D S. 130 years of inorganic nitrogen fertilizer application to the Broadbalk wheat experiment: The effect on soil organic nitrogen [ C ]. Transaction of 14th International Congress of Soil Science, 1990, 4: 9-13.
  • 7Cao Z H, Huang J F, Zhang C S et al. Soil quality evolution after land use change from paddy soil to vegetable land[J]. Environ. Geochem. Health, 2004, 26(2): 97-103.
  • 8Diekowa J, Mielniczuka J, Knickerb H, Bayer C. Soil C and N stocks as affected by cropping systems and nitrogen fertilization in a southern Brazil Acrisol managed under no-tillage for 17 years [ J]. Soil Till. Res., 2005, 81: 87-95.
  • 9Wells A T, Chin K Y, Cornish P S. Comparison of conventional and ahernative vegetable farming systems on the properties of a yellow earth in Ncw South Wales[J]. Agrlc. Ecosyst. Environ. , 2@, 80: 47- 60.
  • 10Lin X G, Yin R, Zhang H Y et al. Changes of soil microbiological properties caused by land use changing from rice-wheat rotation to vegetable cultivation[J]. Environ. Geochem. Health, 2004, 26(2- 3): 119-128.

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