| 精准农业土壤养分与水稻产量关系模型研究 |
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| 引用本文： | 段项锁,薛正平,杨星卫,陆 贤.精准农业土壤养分与水稻产量关系模型研究[J].中国生态农业学报,2003,11(1):62-65. |
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| 作者姓名： | 段项锁 薛正平 杨星卫 陆 贤 |
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| 作者单位： | 上海精准农业技术公司,上海,200030 |
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| 基金项目： | 中国科学院知识创新工程重要方向性项目"精准种植研究--上海精准种植技术集成示范"(KZCX2-412)资助 |
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| 摘 要： | 采用主成分分析法对上海精准农业示范基地土壤养分要素与水稻产量的定量关系进行分析结果表明,全N等营养要素与产量呈正相关关系,其中产量对土壤P含量高低的反应最为敏感;pH值及盐分与产量呈负相关关系。对主成分因子进一步分析表明,养分主成分中速效氮起主要作用,酸碱特性主成分中以pH值最能反应土壤酸碱性状。运用土壤养分要素主成分建立的土壤水稻产量模型平均绝对误差406.5kg/hm~2,平均相对误差4.88％,效果良好。
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| 关 键 词： | 土壤养分 水稻产量 主成分分析 产量模型 |
| 收稿时间： | 2002/6/26 0:00:00 |
| 修稿时间： | 2002年6月26日 |
Study on relation model between soil nutrient and rice yield in Shanghai Precision Agriculture Demonstration Base |
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| DUAN Xiang-Suo,XUE Zheng-Ping,YANG Xing-Wei and LU Xian.Study on relation model between soil nutrient and rice yield in Shanghai Precision Agriculture Demonstration Base[J].Chinese Journal of Eco-Agriculture,2003,11(1):62-65. |
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| Authors: | DUAN Xiang-Suo XUE Zheng-Ping YANG Xing-Wei and LU Xian |
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| Abstract: | According to the actual field data in Shanghai Precision Agriculture Demonstration Base,this paper analyzes the relation between the soil nutrient and the rice yield with the main composition method.The results show that the relation between the yield and the soil nutrient such as the total nitrogen (N) is positive correlation.Among them the yield reaction is sensitive to the content of phosphor (P) in soil while the pH and the salt have negative correlation with the yield.Further analysis of the main composition method shows that among the main composition the available N has the main function.In the sour alkali characteristics,the pH shows the character of sour alkaline of soil most obviously.Absolute error of soil nutrient-paddy rice yield model that is established with the main composition analytical method is 406.5 kg/hm2,and the relative error is 4.88%,so the result is good. |
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| Keywords: | Soil nutrient Rice yield Main composition analyse Yield model |
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