CAJ | 학술논문

运用统计学和ArcGIS软件的地统计分析模块对海南砖红壤香蕉园59个土壤采样点两个取样土层（0～20 cm和20～40 cm）养分进行空间变异性研究。结果表明：香蕉园土壤各养分变异系数均为中等变异。0～20cm土层土壤各养分含量大于20～40 cm土层。0～20 cm和20～40 cm土层中的碱解氮、交换性钙和交换性镁及0～20 cm土层的有机质均符合高斯模型,0～20 cm土层速效磷与20～40 cm土层速效钾符合球状模型,而20～40 cm土层速效磷与0～20 cm土层速效钾符合圆形模型,20～40 cm土层有机质符合指数模型。各养分的变程范围为109.217～279.796 m,有机质具有强烈的空间相关性。0～20 cm土层速效钾的块金效应值小于20～40 cm土层,0～20 cm土层碱解氮、速效磷、交换性钙、交换性镁高于20～40 cm土层。有机质、20～40 cm土层速效磷、0～20 cm土层速效钾的块金效应小于25%,其它养分均在25%～75%,具有中等的空间相关性。确定了合理取样数,0～20 cm碱解氮、速效磷、速效钾、交换性钙、交换性镁、有机质合理取样数分别为：5、30、26、29、25、3;20～40 cm碱解氮、速效磷、速效钾、交换性钙、交换性镁、有机质合理取样数分别为：4、44、30、26、25、3,就可以满足变量施肥的要求。
운용통계학화ArcGIS연건적지통계분석모괴대해남전홍양향초완59개토양채양점량개취양토층（0～20 cm화20～40 cm）양분진행공간변이성연구。결과표명：향초완토양각양분변이계수균위중등변이。0～20cm토층토양각양분함량대우20～40 cm토층。0～20 cm화20～40 cm토층중적감해담、교환성개화교환성미급0～20 cm토층적유궤질균부합고사모형,0～20 cm토층속효린여20～40 cm토층속효갑부합구상모형,이20～40 cm토층속효린여0～20 cm토층속효갑부합원형모형,20～40 cm토층유궤질부합지수모형。각양분적변정범위위109.217～279.796 m,유궤질구유강렬적공간상관성。0～20 cm토층속효갑적괴금효응치소우20～40 cm토층,0～20 cm토층감해담、속효린、교환성개、교환성미고우20～40 cm토층。유궤질、20～40 cm토층속효린、0～20 cm토층속효갑적괴금효응소우25%,기타양분균재25%～75%,구유중등적공간상관성。학정료합리취양수,0～20 cm감해담、속효린、속효갑、교환성개、교환성미、유궤질합리취양수분별위：5、30、26、29、25、3;20～40 cm감해담、속효린、속효갑、교환성개、교환성미、유궤질합리취양수분별위：4、44、30、26、25、3,취가이만족변량시비적요구。
Use of traditional statistical and geostatistical analysis Arcgis software module 59 in Hainan banana two layers of soil samples（0～20cm and 20～40 cm） spatial variability of nutrients,the results show that the banana coefficient of variation of soil nutrients are moderate variation.The 0～20 cm nutrient content of soil layer is greater than 20～40 cm soil layer.0～20 cm and 20～40 cm soil layer in nitrogen,exchangeable calcium and exchangeable magnesium,and 0～20 cm layer of organic matter are in line with the Gaussian model,0～20cm soil available phosphorus and available 20～40 cm soil potassium by spherical model,while the 20～40cm soil available P and K 0～20 cm soil layer model consistent round,20～40 cm of soil organic matter in line with the exponential model.Variable range of the nutrients in the range of 109.217～279.796 m,organic matter has a strong spatial correlation.0 ～ 20cm of soil available K nugget effect is less than 20～40 cm soil layer,0～20 cm of soil nitrogen,available phosphorus,exchangeable calcium,exchangeable magnesium than 20～ 40 cm soil layer.Organic matter,20～40 cm soil available P,0～20 cm of soil available K nugget effect is less than 25%,other nutrients are in the 25% to 75%,and a moderate spatial correlation.To determine a reasonable number of samples,0～20 cm nitrogen,phosphorus,potassium,exchangeable calcium,exchangeable magnesium,a reasonable number of samples of organic matter were： 5,30,26,29,25,3;20～40 cm available N,available K,exchangeable Ca,exchangeable Mg,organic matter,a reasonable number of samples were 4,44,30,26,25,3 to meet the requirements of variable rate fertilization.