Zizania latifolia (also known as high melon, Zizania latifolia, Zizania latifolia hand, Zizania latifolia. ), a perennial herb of Gramineae. Divided into double-season water bamboo and single-season water bamboo (or divided into first-season water bamboo and second-season water bamboo), double-season water bamboo (second-season water bamboo) has higher yield and better quality. Only China and Viet Nam plant Zizania latifolia as a vegetable in the world. Zizania latifolia is known as one of the "three good" in Zhuangzi, Xintai, Shandong, and has been passed down since ancient times. Most of them grow in rivers and lakes and are suitable for fresh water. Poaceae rice subfamily Zizania latifolia