热带作物学报2012，Vol.33Issue(8)：1348-1353,6.
橡胶园土壤肥力指标的小尺度空间变异Ⅰ:0～20cm土层
Micro-scale Spatial Variance of Soil Fertility Indices in the Rubber Plantation Ⅰ :0～20 cm Soil Layer
摘要
Abstract
The objective of this study was to explore the micro-scale spatial variance of soil fertility indices in the rubber plantation. 168 soils were sampled by 0.5 mxl m grid within a 84 m2 region. Soil fertility indices selected included total N, available P, available K, soil organic matter and pH. Geostatistics method was used to analyze the data. Results showed that the semi-variance of the total N, available P, available K, soil organic matter and pH could be simulated by the exponential model. The ranges for total N, available P, available K, soil organic matter and pH were 1.44 m, 1.65 m, 3.36 m, 1.20 m and 1.74 m. The geostatic analysis showed these soil indices were strongly heterogeneity. The distributions of soil fertility indices were obviously different. Contour maps of total N, available P, soil organic matter showed as a island of fertility. Area of the island of total N was the biggest, soil organic matter was in the following, available P was the smallest. The contour maps of available K showed relatively uniformity, which may be related to the parent material of the soil.关键词
橡胶园/土壤肥力指标/空间变异/小尺度/砖红壤Key words
Rubber plantation/ Soil fertility indices/ Spatial variance/ Micro-scale/ Laterite分类
农业科技引用本文复制引用
林清火,林钊沐,贝美容,张培松,罗微..橡胶园土壤肥力指标的小尺度空间变异Ⅰ:0～20cm土层[J].热带作物学报,2012,33(8):1348-1353,6.基金项目
公益性行业(农业)科研专项(No.201303139-4-2) （农业）
现代农业产业技术体系建设专项资金项目(No.CARS-34). （No.CARS-34）
