| 砖红壤香蕉园土壤养分空间变异研究 |
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| 引用本文： | 李炜芳,陈秋波,罗 微.砖红壤香蕉园土壤养分空间变异研究[J].热带作物学报,2011,31(6):1-6. |
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| 作者姓名： | 李炜芳 陈秋波 罗 微 |
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| 作者单位： | 1 海南大学环境与植物保护学院 海南儋州 571737；2 中国热带农业科学院橡胶研究所 海南儋州 571737;2 中国热带农业科学院橡胶研究所 海南儋州 571737;2 中国热带农业科学院橡胶研究所 海南儋州 571737 |
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| 摘 要： | 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。0～20 cm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。
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| 关 键 词： | 香蕉 砖红壤 养分 空间变异 |
Research on Spatial Variability of Latosol Nutrients in Banana Plantations |
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| Institution: | 1 College of Environment and Plant Protection of Hainan University, Danzhou, Hainan 571737;2 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737;2 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737;2 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737 |
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| Abstract: | 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. |
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| Keywords: | banana latosol nutrients spatial variability |
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