Abstract: Based on the synthesized cluster indicators of meteorological factors at different growing periods of early rice, the similar meteorological years were chosen to calculate meteorological impact index of yield for the prediction, and a dynamic prediction model of the early rice yield per unit was established. The early rice yield per unit of ten years was dynamically predicted from 1995 to 2004. The results showed that all of the predications of increasing or decreasing tendency were highly valid and the average accuracy of ten years was with 97.5%, 96.6%, 98.1% and 96.9% for April 30, May 31, June 30 and July 31 respectively. The dynamic prediction model realized a successive dynamic quantitative prediction of early rice yields.

Key words: Early rice, Early rice, Yield dynamic prediction, Synthesized cluster of meteorological factors