Nitrogen (N) is significantly related to crop photosynthetic capacity. Over-and-under-
application of N fertilizers not only limits crop productivity but also leads to negative
environment impacts. With such a dilemma, a feasible solution is to match N supply with
crop needs across time and space. Hyperspectral remote sensing has been gradually
regarded as a cost-effective alternative to traditional destructive field sampling and
laboratory testing for crop N status determination. Hyperspectral vegetation indices (VIs) and …