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Abstract: Due to the differences of rice plant types, light—receiving States and light distribution may appear distinctly. It gives much influences on photosynthesis, organ formation, and accumulation and distribution of dry matters. So it influences the formation of rice yields. Rice Varieties with different plant—types were used as experimental materials. As results of field observation and statistical analysis, some formula of light—receiving rate on rice community are obtained, the steps of the measurement of light—receiving were simplified and the rules and main characteristics of light—receiving rate on different plant types of rice community are elucidated. Thus a primary conclusion about the proper plant type for improving light—receiving and raising solar energy utilization of rice has been advanced.

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