早稻田中大面积养殖利用滿江紅(簡称为萍),在浙南溫州地区已有百余年的历史。以其可以提供大量优貭的有机貭肥料,花本不多,而且不与作物爭地,所以深受当地群众欢迎。至于在浙北嘉兴地区,气候、土壤、耕作制度、水稻品种与溫州地区都有差別,稻田能否养殖利用滿江紅,以往缺少这方面的試驗研究。自1962年起,根据全省“南萍北移試驗” Waseda large-scale breeding use of Azolla (referred to as Ping), in Wenzhou, southern Zhejiang has more than 100 years of history. With its ability to provide a large number of excellent natural organic fertilizer, the flower is small, and not compete with crops, so welcomed by the local people. As in the Jiaxing area of ​​northern Zhejiang, climate, soil, tillage system, rice varieties and Wenzhou are different, whether the use of rice paddy fields Man Jiang Hong, in the past the lack of experimental studies in this area. Since 1962, according to the province “South Ping moved north trial”