昆明市植烟土壤肥力状况评价
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中国烟草总公司云南省烟草公司科技计划项目(2010YN44)


Comprehensive evaluation of soil fertility status for tobaccogrowing soils in Kunming
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    摘要:

    为了全面分析昆明市植烟土壤肥力状况,以1 000个代表性植烟土壤的理化指标为基础数据,运用模糊综合评价法(Fuzzy)对植烟土壤的肥力状况进行综合评价。结果表明:(1)昆明市植烟土壤质地以壤土为主,容重、孔隙度和持水量整体处于适宜烤烟生长范围,>025 mm水稳性团粒含量较高,土壤抗侵蚀能力强。(2)植烟土壤pH变异系数较小,微酸性土壤比例占4810%;有机质含量丰富,全氮含量适宜,碱解氮含量中等,有利于烤烟种植中氮素的调控;速效磷含量变异程度较高,速效钾含量丰富;交换性镁、有效钼含量变异程度较大,有效硼含量中等,水溶性氯含量不均衡。(3)昆明市植烟土壤肥力综合评价指数(IFI)的变化范围是0258~0957,平均值为0703,整体IFI分值较高。植烟土壤肥力综合评价中养分强度因素的有效钼、有效硼、交换性镁和速效磷指标相对其余指标对植烟土壤肥力的作用分值较小,是影响昆明市植烟土壤肥力的限制因子。

    Abstract:

    The Fuzzy comprehensive evaluation was adopted to evaluate soil fertility status for tobaccogrowing soils in Kunming based on the physicalchemical properties of 1 000 representative samples.The results showed that:(1)The textures of tobaccogrowing soils were mainly loam.The bulk density,porosity and water holding capacity were suitable for tobacco growth,and water stable aggregate content high.(2)The main soil in Kunming tobacco area was acidulous and variation coefficient small.Tobaccogrowing soils were rich in organic matters,medium of whole nitrogen and available nitrogen,which was beneficial to nitrogen regulation.The coefficients of variation in available phosphorus,exchangeable magnesium available molybdenum were high.There were high available potassium,medium available boron,and disproportion in water soluble chlorine.(3)The range of IFI in tobaccogrowing soils was 0258~0957 and average being 0703,which was scored high.In comprehensive evaluation of soil fertility status,evaluation indexes of available molybdenum,available boron,exchangeable magnesium and available phosphorus were low effect value,which were limiting factors.

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邱学礼,高福宏,李忠环*,詹莜国,彭云,彭荣珍,付斌.昆明市植烟土壤肥力状况评价[J].中国土壤与肥料,2012,(5):11-16.

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  • 收稿日期:2012-03-12
  • 最后修改日期:2012-04-20
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  • 在线发布日期: 2012-10-19
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