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Position: Home > Articles > Nitrogen Monitoring of Winter Wheat Based on UAV Multispectral Image Journal of Anhui Agricultural Sciences 2020 (5) 239-241+245

基于无人机多光谱影像的冬小麦氮肥监测

作  者:
斯钧浪;董超;李百红
单  位:
山东省泰安市自然资源和规划局;浙江艺佳地理信息技术有限公司;山东农业大学信息科学与工程学院
关键词:
无人机;多光谱影像;植被指数;冬小麦;氮水平
摘  要:
[目的]研究无人机多光谱影像与土壤养分水平变化的关系。[方法]利用无人机搭载的多光谱传感器生成研究区50 m高的反射率正射影像,计算NDVI,GNDVI和SAVI指数值,调取作物感兴趣区进行研究。[结果]植被指数在小麦越冬期的不同长势小麦有明显差别。在其他外部条件一致的情况下,土壤N水平的变化对冬小麦越冬期长势影响较明显。[结论]无人机多光谱影像对冬小麦有较好的氮诊断潜力,可利用估测结果指导精准氮肥管理。
译  名:
Nitrogen Monitoring of Winter Wheat Based on UAV Multispectral Image
作  者:
SI Jun-lang;DONG Chao;LI Bai-hong;Zhejiang Yijia Geographic Information Technology Co., Ltd.;College of Information Science, Shandong Agricultural University;Tai'an Natural Resources and Planning Bureau;
关键词:
Unmanned aerial vehicle(UAV);;Multispectral image;;Vegetation index;;Winter wheat;;Nitrogen level
摘  要:
[Objective]To study the relationship between UAV multispectral imagery and soil nutrient level. [Method] Multispectral sensors carried by UAV were used to generate orthophoto images with reflectivity of 50 m in the study area. NDVI, GNDVI and SAVI indexes were calculated to extract the region of interest of crops for research. [Result]Vegetation index has obvious difference among different growing wheat during winter. By plotting frequency histogram, regional differences can be observed. Under the same external conditions, through further analysis with nitrogen level, the change of soil N level was more obvious for winter wheat growth during overwintering period. [Conclusion] UAV multi-spectral image has good diagnostic potential for winter wheat, and the estimated results can be used to guide precise nitrogen management.

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