六十年代后,我省开展了红萍养殖利用的试验、示范和推广,但发展速度不快。其原因是越冬、越夏时间长,利用时间短,要求越冬保种数量多,用薄膜覆盖成本高;春繁中,存在争田、争肥、争鲜力的矛盾;套养作追肥,若倒萍不及时,还影响增产效果。 1978年,我省引进了细绿萍(Azollafilicluo After the 1960s, our province launched a trial, demonstration and promotion of Hongping breeding and utilization, but its development was not fast. The reason is overwintering, the summer time is long, the use of time is short, requiring a large number of overwintering conservation, covering the film with a high cost; spring and the existence of fields, fight fat, fight fresh power conflicts; Ping is not timely, but also affect the stimulation effect. In 1978, the province introduced fine green Ping (Azollafilicluo