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| 基于多源数据的县域冬小麦氮肥调控管理分区 | |
| 引用本文： | 王备战,王来刚,温 暖,任瑞萍,郑 涛,杨武德.基于多源数据的县域冬小麦氮肥调控管理分区[J].农业工程学报,2012,28(17):95-101. |
| 作者姓名： | 王备战 王来刚 温 暖 任瑞萍 郑 涛 杨武德 |
| 作者单位： | 1. 山西农业大学农学院,太谷,0308011 2. 河南省农业科学院农业经济与信息研究中心,郑州,450008 3. 河南农业大学经济与管理学院,郑州,450002 4. 河南省科学技术干部学校,郑州,450008 5. 安阳县农业局,安阳,455000 |
| 基金项目： | 河南省重点科技攻关项目（092102110042）；山西省科技攻关项目（20110311038） |
| 摘 要： | 为便于对县域尺度冬小麦进行精确氮肥调控,该文以安阳县冬小麦种植区为研究对象,在3S技术的支持下,利用定性和定量相结合的分析方法,分别对影响冬小麦氮肥调控的重要因子,如地形、土壤类型、土壤养分和光谱信息等多源数据,进行聚类和综合叠加分析,以确定最终的县域氮肥调控管理分区。基于土壤养分和产量的管理分区划分结果评价表明,各级分区土壤养分和产量的变异系数均有所减低,其中三级分区的21个子区为最终分区结果,其管理分区之间的土壤理化性质差异显著,有机质、碱解氮和产量变异系数均值分别降低70%、53%、66%。基于光谱数据的管理分区划分结果评价表明,不同分区内归一化植被指数(NDVI)的集中程度明显提高。分区结果可以作为冬小麦氮肥调控的决策单元,为精确农业管理提供有效途径。 |
| 关 键 词： | 氮肥 调控 数据 管理分区 县域 冬小麦 |
| 收稿时间： | 2011/12/29 0:00:00 |
| 修稿时间： | 2012/6/20 0:00:00 |
Management zoning for winter wheat nitrogen regulation at county level based on multisource data |
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| Wang Beizhan,Wang Laigang,Wen Nuan,Ren Ruiping,Zheng Tao and Yang Wude.Management zoning for winter wheat nitrogen regulation at county level based on multisource data[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(17):95-101. | |
| Authors: | Wang Beizhan Wang Laigang Wen Nuan Ren Ruiping Zheng Tao and Yang Wude |
| Institution: | 1(1.College of Agriculture,Shanxi Agricultural University,Taigu 030801,China;2.Agricultural Economy and Information Research Center,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;3.College of Economics and Management;Henan Agricultural University;Zhengzhou 450002,China;4.Henan Science and Technology Cadre School Zhengzhou 450008,China;5.Agriculture bureau of Anyang County,Anyang 455000,China) |
| Abstract: | In order to improve winter wheat nitrogen regulation and precision farming at county level,this study selected Anyang county as the study region.Major impacting factors,including terrain,soil type,soil nutrient and spectral data were analyzed and appropriate indices were chosen for the management zone.The zone was executed by cluster analysis and spatial overlay using qualitative and quantitative analyses based on 3S.The results revealed that coefficient variation of soil property and yield were reduced in each level zone.The management zones were the divided 21 subzones under third-level,there were significantly statistical differences between the chemical properties of soil samples in the sub zones.The average coefficients of variation of organic matter;nitrogen and yield reduced 70%,53% and 66% respectively.The results on zoning can be used as decision-making unit in winter wheat nitrogen regulation and can provide an effective pathway in precision agricultural management. |
| Keywords: | nitrogen regulation data management zone county level winter wheat |
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