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
表2 各处理施肥情况
Table 2 Fertilization of each treatment
处理
Treatment
施肥时期和施肥量 Fertilizer application time and rate (kg hm-2)
V4 V8 V12 R1 R3
N P2O5 K2O N N P2O5 K2O N N
N0 0 48 28.2 0 72 42.3 0
N270-F3 108.0 48 28.2 108.0 72 42.3 54
N360-F3 144.0 48 28.2 144.0 72 42.3 72
N270-F5 40.5 48 28.2 67.5 94.5 72 42.3 40.5 27
N360-F5 54.0 48 28.2 90.0 126.0 72 42.3 54.0 36