Forage canopy spectral reflectance measurements (350nm to 2500 nm) were made weekly using ASD Fieldspec in eight random spots in each of the three pastures.

• 试验选择3个草场,每个草场随机选取8个观测点,每周用ASD Fieldspec收集饲草的冠层反射率的数据(波段从350nm到2500nm)。