Abstract:Wheat in the experimental field was inoculated using stripe rust pathogen. When wheat stripe rust occurred, canopy reflectance of wheat was measured with an ASD field spectral handheld sensor, and corresponding SPOT-2 satellite remote sensing image at the same period was also obtained. The comparison of the reflectance between these both situations was conducted. The results showed that satellite and near-ground reflectance have the same rule in three bands of SPOT-2 satellite remote sensing spectrum on wheat stripe rust. For satellite remote sensing spectrum, the reflectances of diseased plot were 19.02% and 15.40% at the first band and the second band, respectively, and were higher than those in normal plot with the value of 18.61% and 14.90%. However, the reflectances in diseased plot and normal plot at the third band were 34.65% and 35.90%, respectively. It was indicated that the difference between the relectances in diseased plot and normal plot at the third band was more distinctively than those at the first band and the second band. Therefore, the third band of SPOT-2 satellite remote sensing spectrum can be used to monitor wheat stripe rust.