基于无人机多光谱数据和氮素空间分异的玉米冠层氮浓度估算

郝琪, 陈天陆, 王富贵, 王振, 白岚方, 王永强, 王志刚

Estimation of canopy nitrogen concentration in maize based on UAV multi- spectral data and spatial nitrogen heterogeneity

HAO Qi, CHEN Tian-Lu, WANG Fu-Gui, WANG Zhen, BAI Lan-Fang, WANG Yong-Qiang, WANG Zhi-Gang

图1 田间试验布局(A)与无人机RGB影像(B), 各处理施肥罐照片(C) N0、N270、N360分别表示施氮量为0、270 kg hm-2、360 kg hm-2。F3、F5分别表示施氮次数为3次和5次。

Fig. 1 Test field layout (A) and UAV RGB image (B), fertilization tanks layout for each treatment (C) N0, N270, and N360 indicate that the nitrogen application rates were 0, 270 kg hm-2, and 360 kg hm-2, respectively. F3 and F5 indicate that the nitrogen application times are three and five times, respectively.