Multi-stage fertilizer recommendation for spring maize at the field scale based on narrowband vegetation indices
Computers and Electronics in Agriculture(2023)
摘要
•Proposing a cost-effective approach for multi-stage fertilizer recommendation.•Combining a long-term NPK fertilizer experiment and UAV hyperspectral images.•Five vegetation indices presented high fitting accuracy with N fertilizer amounts.•Vegetation indices sensitivity raised with N fertilizer amounts increased.
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关键词
Precision fertilization,Critical growth stages,Spring maize,Yield response,UAV-remote sensing,Smallholder farming systems
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