| 变量施肥对改善土壤养分空间差异性的综合评价 |
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| 引用本文： | 王国伟,闫 丽,陈桂芬. 变量施肥对改善土壤养分空间差异性的综合评价[J]. 农业工程学报, 2009, 25(10): 82-85. DOI: 10.3969/j.issn.1002-6819.2009.10.014 |
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| 作者姓名： | 王国伟 闫 丽 陈桂芬 |
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| 作者单位： | 1. 吉林农业大学信息技术学院,长春,130118
2. 吉林农业大学信息技术学院,长春,130118;吉林大学计算机科学技术学院,长春,130062 |
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| 基金项目： | 国家“863”高科技计划项目（2006AA10A309） |
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| 摘 要： | 精准农业中一个非常重要的环节就是变量施肥，其核心思想是根据土壤中养分含量的多少来决定施肥量，以达到土壤养分平衡。目前通常对土壤养分情况评价的做法是分别考察每种土壤养分的变异情况，不能综合分析。因此，该文提出利用一种加权模糊聚类算法，综合评价经过变量施肥作业后土壤养分空间差异性的变化情况。通过对榆树市弓棚镇十三号村3号地未变量施肥、连续变量施肥2年和连续变量施肥5年的土壤养分进行综合分析比较，可知经过连续变量作业后土壤养分空间差异明显减小。
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| 关 键 词： | 模糊聚类，土壤，养分，变量施肥，空间差异 |
| 收稿时间： | 2008-11-26 |
| 修稿时间： | 2009-07-21 |
Comprehensive evaluation of effect of variable rate fertilization on spatial variability of soil nutrients |
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| Wang Guowei,Yan Li and Chen Guifen. Comprehensive evaluation of effect of variable rate fertilization on spatial variability of soil nutrients[J]. Transactions of the Chinese Society of Agricultural Engineering, 2009, 25(10): 82-85. DOI: 10.3969/j.issn.1002-6819.2009.10.014 |
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| Authors: | Wang Guowei Yan Li Chen Guifen |
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| Affiliation: | 1. College of Information and Technology Science, Jilin Agricultural University, Changchun 130118, China,1. College of Information and Technology Science, Jilin Agricultural University, Changchun 130118, China and 1. College of Information and Technology Science, Jilin Agricultural University, Changchun 130118, China; 2. College of Computer Science Technology, Jilin University, Changchun 130062, China |
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| Abstract: | Variable rate fertilization is very important part of precision agriculture. Its core idea is based on that according nutrient content in soil to determine fertilizer amount, so as to achieve balance of soil nutrients. Now the conventional method for evaluating the soil nutrients is based on inspecting variations of each kind of soil nutrient separately, and this method can not comprehensive analysis. Therefore, the soil nutrients spatial difference after the variable rate fertilization was comprehensive evaluated by using a weighted fuzzy clustering algorithm. In 3rd field of 13th village in Gongpeng Town of YuShu city, comprehensive comparing of the soil nutrients of the field with no variable rate fertilization, with continuous variable fertilization for two years or five years was conducted. Result showed that the soil nutrients spatial difference was reduced obviously after continuous variable rate fertilization. |
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| Keywords: | fuzzy clustering soil nutrients variable rate fertilization spatial difference |
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