关键词: 水稻（Oryza sativa L.）, 一稻两虾, 克氏原螯虾（Procambarus clarkii）, 罗氏沼虾（Macrobrachium rosenbergii）, 种养要点, 效益, 湖北省

Abstract: In response to issues in conventional rice-crayfish co-culture systems, such as the susceptibility of the second batch of crayfish to high temperatures and diseases, as well as low aquaculture yields, a new comprehensive rice-crayfish co-culture model “crayfish (Procambarus clarkii)+ rice (Oryza sativa L.)+ Macrobrachium rosenbergii” (one rice crop and two shrimp species) was introduced. Compared with the conventional rice-crayfish co-culture model, this model replaced crayfish with Macrobrachium rosenbergii in the perimeter trenches during the high-temperature period from June to October. Without affecting rice yield, the utilization rate of the ring ditch in the paddy field increased by 21.1%, and the utilization rate of the accumulated temperature in the system increased by 53.7%. The yield of this model was 2 381.2 kg/hm² for crayfish, 877.5 kg/hm² for Macrobrachium rosenbergii, and 8 250.2 kg/hm² for high-quality rice. The total output value was 113 550 yuan/hm², and the income was 55 650 yuan/hm², which was 15 780 yuan/hm² higher than that of conventional rice-crayfish co-cropping. It had great market potential and development prospects.

Key words: rice (Oryza sativa L.), one rice crop and two shrimp species, crayfish (Procambarus clarkii), Macrobrachium rosenbergii, key points of planting and breeding, benefit, Hubei Province