Particle fractionation and organic carbon content in coastal saline soils with natural fallow and pig slurry amendments
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摘要: 通过对西瓜Citrullus lanatus地滨海盐土施加养猪沼液试验,讨论弃耕和施加沼液年限对土壤总有机碳(TOC)和各粒级有机碳的影响,阐明弃耕和沼液施加影响下土壤有机碳的积累和演化规律,为滨海盐土改良提供基本依据。结果表明:①随着剖面深度和沼液施加年限的增加,土壤总有机碳质量分数分别减少和增加;②土壤中以粉粒有机碳为主且随着剖面深度和沼液施加年限的增加,土壤各粒级有机碳质量分数分别减少和增加;③弃耕和沼液施加均可提高滨海盐土总有机碳和各粒级有机碳质量分数,其中弃耕地总有机碳的变化范围是8.90 ~ 14.40 gkg-1,施肥地总有机碳为5.45 ~ 13.55 gkg-1,从而改良滨海盐土。图1表2参16Abstract: To provide a reference for coastal saline soil improvement,an experiment with pig slurry amendments from coastal saline soils was conducted to determine the effects on content and particle fractionation of organic carbon and to demonstrate the accumulation and evolution law of soil organic carbon. Results showed that soil total organic carbon(TOC) and carbon content for different sized soil particles decreased with an increase of soil profile depth and increased with the length of time that pig slurry amendment was used. Also,soil carbon consisted mainly of silt carbon. In natural fallow land TOC was 8.90 - 14.40 gkg-1,and on fertilized land it was 5.45 - 13.55 gkg-1. Thus,both natural fallow and pig slurry amendments could improve TOC and carbon from different sized soil particles in coastal saline soils,thereby improving their quality.[Ch,1 fig. 2 tab. 16 ref.]
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Key words:
- soil science /
- natural fallow /
- pig slurry /
- coastal saline soil /
- organic carbon /
- particle fractionation
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.02.007

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