Method for efficient alternate culture of procambarus clarkii and eriocheir sinensis

The invention relates to the technical field of cultivation, in particular to an efficient alternate cultivation method for procambarus clarkii and eriocheir sinensis. The method comprises the following steps: (1) modifying a rice field; (2) putting juvenile crabs; (3) shrimp seeds are put into the annular breeding ditch at the end of March, high-protein feed 1 is put, the specification of the shrimp seeds is 300-400/kg, and the putting density of the shrimp seeds is 3000-3800/mu; (4) rice planting; (5) from July to September, keeping the ground of the rice planting area wet or keeping the water depth of the rice planting area to be 12-15cm; (6) catching the crabs in mid-to-late October. According to the method, through complementation, mutual promotion and mutual control of the rice, the shrimps and the crabs, the application amount of pesticides and chemical fertilizers in the rice field can be reduced, the comprehensive benefits of the farmland can be improved, and remarkable economic benefits are achieved