滿江紅通称紅萍或绿萍,学名Azolla pinnata。由于具有固氮、繁殖快的特性和提高作物产量、改良土壤、不与粮爭地、抑制杂草生长以及营养价值高的功用,在浙南的平原水网地带,群众素有稻田养萍肥田的习慣。一九六二年冬浙江省溫州专区有一千余个队(社)作了滿江紅就地越冬試驗和示范推广。看来发展养萍不够迅速的主要原因是对于养萍在采种、留种技术上,农民强調了异地采种(山区冷水田)、水湖(溫泉水田)越冬繁殖的重要性。他們认为,唯有这种萍种,才能保证作物的增产。 Azolla commonly known as Hongping or Lupin, scientific name Azolla pinnata. Due to the function of nitrogen fixation and fast propagation, the function of improving crop yield, improving soil, not competing with grain, inhibiting the growth of weeds and high nutritional value, habit. In 1962 there were more than a thousand teams (or agencies) in Wenzhou area in Zhejiang province who made over-the-counter experiments and demonstrations on the spot. It appears that the main reason for the development of Yang-ping is not fast enough is that Yang-ping stressed the importance of over-wintering breeding of cold-paddy fields and water lakes (hot spring paddy fields) in different places in terms of seed collection and seed-saving techniques. They think that only this kind of seed can ensure the increase of crops.