In this paper

spectral reflectance of stressed rice by cadmium and copper in soil was discussed. A high resolution spectroradiometer. was employed to measure spectral reflectance of polluted rice at natural condition. It was closer to actual state than that of measurement of leaves in laboratory. It was also suitable to analysis with remotely sensed image.The results indicated that effects of cadmium and copper in soil on physiological properties and spectral reflectance of rice were the most significant at tillering stage. Optimum time for monitoring polluted rice by heavy metal was tillering stage

and effective bands were 0.54-0.58

0.64-0.69

0.74-0.80 micrometers. Analysis methods for spectral reflectance of rice

such as wave shape analysis

differential spectra

greenness indices and principal component analysis etc.

were discussed. It stated that these methods were more effective for monitoring polluted rice by high concentration of cadmium and copper

and not significant to lower concentration.