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Abstract
Taking Hubei Province as an example, starting with the present situation and existing problems of grain production, this paper expounds the great significance of "crayfish-rice continuous cropping" model in improving grain quality, and analyzes the beneficial influence of "crayfish-rice continuous cropping" on grain production and the difficulties it faces. This paper also puts forward some measures and suggestions for the further popularization of "crayfish-rice continuous cropping" in order to maintain food security.