Field Rice Growth Monitoring and Fertilization Management Based on UAV Spectral and Deep Image Feature Fusion
文献类型: 外文期刊
作者: Chen, Bingnan;Su, Qihe;Li, Yansong;Chen, Rui;Yang, Wanneng;Huang, Chenglong
作者机构:
关键词: (1-1-3)unmanned aerial vehicle;vegetation indices;deep learning and machine learning;feature fusion;fertilization management
期刊名称: AGRONOMY-BASEL
ISSN:
年卷期: 2025 年 15 卷 4 期
页码:
收录情况: SCIE(2025版)
摘要: Rice, as a globally vital staple crop, requires efficient field monitoring to ensure optimal growth conditions. This study proposed a novel framework for classifying nutrient deficiencies and formulating fertilization strategies in field-grown rice by fusing UAV-derived vegetation indices (VIs) with deep image features extracted via deep neural networks. The framework integrated visible light VIs, spectral VIs, and image features to provide a comprehensive reflection of crop nutritional conditions, aligning closely with practical production needs. The deep image features achieved nutrition classification accuracies of 88.78% and 84.56% for rice spikelet protection fertilizer application stage (S1) and bud-promoting fertilizer application stage (S2), while the fusion of VIs and deep image features significantly enhanced the accuracy of nutrient classification, with the RF model achieving the highest accuracy (97.50% in S1 and 96.56% in S2). The proposed fertilization strategy effectively improved rice growth traits, demonstrating the potential of UAV-based remote sensing for precision agriculture, which would provide a scalable solution for optimizing rice cultivation and ensuring food security.
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