1977年11月以来,我省一些科研和生产单位先后引进细绿萍,积极开展试验、示范和推广。实践证明,细绿萍耐寒,起繁温度低,在适宜的条件下繁殖快、产量高、固氮能力强,是一种有发展前途的优良萍种。但是,它不耐高温强光,越夏保种比较困难。因此,能否突破越夏保种关,就成为细绿萍大面积推广的关键之一。 Since November 1977, some scientific research and production units in our province have successively introduced fine green ping and actively carried out experiments, demonstrations and popularization. Practice has proved that fine green Ping cold, low temperature from the fan, under the appropriate conditions, fast propagation, high yield, strong ability to fix nitrogen, is a promising Ping Ping species. However, it is not heat-resistant glare, the more difficult summer species. Therefore, the ability to break the summer off the summer, it has become one of the key areas of green Luping large-scale promotion.