Abstract: The geographic information aimed the areas of gradient<6° and territorial areas of>1 ha in Yungui Plateau was extracted and separated by GIS. The big basin which rice was cultivated was chosen to be the monitoring area by remote sensing. A composed ten days NDVI sequence of MODIS from 2005 to 2006 was compared to the data observed by meteorological stations to analyze the relationship between the NDVI value and growth durations and growth status of rice. The results showed that each growing period of rice corresponded with the NDVI. The NDVI was at about 0.6 after rice regreening, and up to 0.70 rapidly from tillering to stem extension period. It reached at the peak with 0.75 during booting and sprouting period and then turned down during milkripe and mature period. The point which NDVI was at 0.7 could be as an indicator represented the beginning of reproductive growth of rice. Comparing the NDVI to temperature at the same period, the growth status rice could be assessed and forecasted qualitatively.

Key words: MODIS, MODIS, GIS, NDVI, Yungui Plateau, Growth duration