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1 2022-2023年试验点0~30 cm耕层土壤养分含量
Table 1 Soil nutrient content in the 0-30 cm layer at the test site in 2022-2023
年份
Year
试验地点
Experimental location
有机质
Organic
matter
(g kg-1)
碱解氮
Alkali-hydrolyzale
nitrogen
(mg kg-1)
速效磷
Rapidly available
phosphorus
(mg kg-1)
速效钾
Rapidly available
potassium
(mg kg-1)
pH
2022 TRB 23.7 53.6 4.5 114.9 7.5
TLB 23.9 33.1 14.7 148.0 7.5
2023 TRB 22.5 58.9 3.9 123.4 7.9