桉树科技
桉樹科技
안수과기
EUCALYPT SCIENCE & TECHNOLOGY
2014年
4期
27-31
,共5页
李孔生%周保彪%陈马兴%简明
李孔生%週保彪%陳馬興%簡明
리공생%주보표%진마흥%간명
土壤肥力%综合评价%模糊数学%隶属度
土壤肥力%綜閤評價%模糊數學%隸屬度
토양비력%종합평개%모호수학%대속도
soil fertility%integrated evaluation%fuzzy mathematics%membership function
利用相关分析和模糊数学原理，建立土壤肥力的综合评价体系。根据作物效应曲线，对雷州半岛桉树林地12项肥力指标建立隶属度函数，并依据各指标的相关系数确定各指标的权重，求得土壤肥力综合指标(IFI)。结果表明：土壤肥力综合指标值IFI主要分布在0.2~0.4之间，平均值为0.27，土壤肥力总体处于四级低等水平。
利用相關分析和模糊數學原理，建立土壤肥力的綜閤評價體繫。根據作物效應麯線，對雷州半島桉樹林地12項肥力指標建立隸屬度函數，併依據各指標的相關繫數確定各指標的權重，求得土壤肥力綜閤指標(IFI)。結果錶明：土壤肥力綜閤指標值IFI主要分佈在0.2~0.4之間，平均值為0.27，土壤肥力總體處于四級低等水平。
이용상관분석화모호수학원리，건립토양비력적종합평개체계。근거작물효응곡선，대뇌주반도안수임지12항비력지표건립대속도함수，병의거각지표적상관계수학정각지표적권중，구득토양비력종합지표(IFI)。결과표명：토양비력종합지표치IFI주요분포재0.2~0.4지간，평균치위0.27，토양비력총체처우사급저등수평。
A comprehensive soil fertility evaluation system was developed usingcorrelation analyses and fuzzy mathematics.From the crop-effect curves obtained,12 soil indices were found to be important for defining the fertility ofEucalyptusplantations in Leizhou Peninsula. Correlation coefficients of each index were used to determine weights for each of these 12 indicators in formulating an Integrated Soil Fertility Index (IFI) function.The results showed thatvalues of thisIFIon the Leizhou peninsular were distributed mainly inthe range of 0.2~0.4,withthe average value being 0.27.Overall, soil fertility in the region is considered to be of a low level and categorized as grade4.
