Planting method for crop rotation of zizania aquatica and rice

The invention relates to a shoot tube seedling raising method for zizania aquatica, and belongs to the technical field of agricultural cultivation. The method comprises the following steps: (1) transformation of a zizania aquatica field: completing transformation of a new field parcel in the middle of March, leveling the field by using an excavator, and completing ditches and operation ways which are suitable for planting zizania aquatica and rice; (2) autumn zizania aquatica seedling raising: starting to perform autumn zizania aquatica seedling raising in the field in late March; (3) harvesting spring zizania aquatica: harvesting spring zizania aquatica in the field from late May to mid June, and planting rice after harvesting; (4) late rice planting: the late rice is sown in late June, a direct sowing mode is adopted, the sowing amount per mu is 3.5 kg, and base fertilizer and topdressing are not applied; (5) rice harvesting: completing rice harvesting in late October, and turning over the rice field in tim