河南省潮土、砂姜黑土基本性质变化分析
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国家科技基础性工作专项项目(2008FY110600)资助


Basic Properties Variation of Fluvo-aquic Soil and Lime Calcic Black Soil in Henan Province
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    摘要:

    通过对河南省潮土、砂姜黑土的室外采集与室内测定,对其基本性质的时空变化进行研究。结果表明:①潮土和砂姜黑土表层质地均以粉砂壤土为主,潮土颗粒大小级别以壤质为主,砂姜黑土颗粒大小级别以细壤质为主;②1979—2012 年, 潮土表层 pH 平均值由 8.3 降为 8.2,砂姜黑土表层 pH 平均值由 7.8 降为 6.9,有机质、全氮平均含量均随时间变化上升,CEC 均随时间变化而降低;砂姜黑土速效钾平均含量增加了 51.3 mg/kg,潮土速效钾平均含量降低了 21.2 mg/kg;潮土、砂姜黑土有效磷平均值分别由 5.8 mg/kg 和 4.8 mg/kg 上升至 27.9 mg/kg 和 33.6 mg/kg,变化幅度较大,且变异系数较高,都达 70% 以上;③潮土、砂姜黑土不同地区及不同剖面层次的基本性质均存在较为明显的空间变化。

    Abstract:

    Spatial and temporal variability of basic properties of fluvo-aquic soil and lime calcic black soil?in Henan Province were studied. The results showed that the main texture was silt loam for both fluvo-aquic soil?and lime calcic black soil, and the particle size levels were loam and clayey loam for each of them. From 1979 to 2012, the mean pH of top layer?declined from 8.3 to 8.2 in fluvo-aquic soil and from 7.8 to 6.9 in lime calcic black, the mean organic matter and total nitrogen contents of the top layer increased but CEC declined, the mean content of rapidly available potassium increased by 51.3 mg/kg in lime calcic black soil but decreased by 21.2 mg/kg in fluvo-aquic soil, the mean content of available phosphorus of top layer increased obviously in both soils, increased from 5.8 mg/kg to 27.9 mg/kg and 4.8 mg/kg to 33.6 mg/kg, respectively. The above properties of fluvo-aquic soil?and lime calcic black soil varied greatly in different areas and different profile layers.

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李少丛,万红友,王兴科,陈 杰.河南省潮土、砂姜黑土基本性质变化分析[J].土壤,2014,46(5):920-926. LI Shao-cong, WAN Hong-you, WANG Xing-ke, CHEN Jie. Basic Properties Variation of Fluvo-aquic Soil and Lime Calcic Black Soil in Henan Province[J]. Soils,2014,46(5):920-926

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  • 在线发布日期: 2014-11-18
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