The monitoring data in a small area is analyzed with NOAA/AVHRR data in a parallel way. NOAA/AVHRR data gets applied to winter wheat growth monitoring of the small area. The relationship between the agricultural index and the degree of greenness by remote sensing is set up with the developing equation in the satellite remote figures of crop classification. So a set of practical methods of classifying crops by means of satellite remote sensing are provided for the local area.