| 黑龙江精准农业示范区土壤养分空间变异研究 |
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| 引用本文： | 隋常玲,蔡德利,翟瑞常,汪春.黑龙江精准农业示范区土壤养分空间变异研究[J].黑龙江八一农垦大学学报,2005,17(5):28-32. |
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| 作者姓名： | 隋常玲 蔡德利 翟瑞常 汪春 |
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| 作者单位： | 1. 黑龙江八一农垦大学植物科技学院,大庆,163319
2. 黑龙江八一农垦大学工程学院 |
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| 基金项目： | 国家高技术研究发展计划（863 计划）资助项目（2003AA209090）. |
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| 摘 要： | 以面积为129 hm^2农田为采样区,使用Ag132 DGPS仪定位,网格法采集0～20 cm耕层土壤样品,实验室测定土壤碱解氮、速效磷、速效钾和有机质的含量.应用传统统计学方法和空间分析方法对土壤养分变异进行了研究.结果表明,土壤养分性质均存在着空间变异性,速效磷、速效钾和有机质变异相对较大,碱解氮变异亦小;土壤养分性质均存在半方差结构,分别拟合Exponential、Gaussian、Pentaspherical、Gaussian模型;碱解氮、速效磷、速效钾和有机质均显示中等的空间相关性.
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| 关 键 词： | GPS 土壤养分 网格法 空间分析 半方差 |
| 文章编号： | 1002-2090（2005）05-0028-05 |
| 收稿时间： | 2005-09-02 |
| 修稿时间： | 2005-09-02 |
Study on Spatial Variability of Soil Nutrients in The Precision Agriculture Demonstration Plot of Heilongjiang Province |
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| SUI Chang-ling, CAI De-li, ZHAI Rui-Chang et al..Study on Spatial Variability of Soil Nutrients in The Precision Agriculture Demonstration Plot of Heilongjiang Province[J].Journal of Heilongjiang August First Land Reclamation University,2005,17(5):28-32. |
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| Authors: | SUI Chang-ling CAI De-li ZHAI Rui-Chang |
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| Abstract: | Observing points by grid were made in field 129 hm^2 and adopted method of Ag132 DGPS position. Soil samples were obtained under land of 0-20 cm. N, P, K and organic matter were measured in laboratory. Soil variability was studied with routine statistics method and spatial analysis method. The result showed that there existed spatial variability of soil nutrients. P, K and organic matter had medium variability. On the contrary, N has a smaller spatial variability, soil nutrient had semi-variance structure, and model best fit included Exponential, Gaussian, Pentaspherical and Gaussian. There existed medium spatial correlation in N, P, K and OM. |
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| Keywords: | GPS soil nutrient grid method spatial variability semi-variance |
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