Abstract: The progress in technology and application of agricultural weather forecast in Heilongjiang province was introduced. The method and technology of agricultural weather forecast were summarized, and the index database, the knowledge database, the technology and the work flow were emphasized. The light and heat resource of rice growth were assessed in Heilongjiang province. It indicates that the effect of sunshine on rice yield is significant compared with temperature, and its contribution rate on rice yield reaches 64.58%. The maximum contribution rate of sunshine appears in blossom stage and the minimum one is in sowing stage, while that of temperature is in jointing stage and the minimum one is in transplanting stage.

Key words: Meteorological index, Agricultural weather forecast, Evaluation model