细绿萍1977年从东德引进。它耐盐性强,在土壤含盐达0.5％的水面上也能保持一定的繁殖能力。近几年引入沿海滩涂地区,放萍种稻,不仅对改造盐碱地卓有成效,同时还能获得亩产250公斤左右的稻谷。 细绿萍对氮、磷、钾肥的要求,一般认为磷、钾肥是不可缺少的,在正常条件下,并不需要施用氮肥。但在海涂盐碱地上放萍,配合施用适量的氮肥,对其生长、繁殖有很好的促进作用。在沿海含盐土壤上放养细绿萍,如何配比氮、磷、钾的数量,目前研究较少。为此,我们参照沿海滩涂地区春繁细 Fine Green Ping introduced from East Germany in 1977. It is salt-tolerant and maintains a certain level of reproductive capacity on water up to 0.5% of the salt content in the soil. In recent years, the introduction of coastal tidal flat areas, put Pingchu rice, not only effective transformation of saline-alkali soil, but also get about 250 kg of paddy per mu. Fine green Lvping requirements of nitrogen, phosphorus and potassium, phosphorus, potassium are generally considered indispensable, under normal conditions, does not require the application of nitrogen fertilizer. But in the saline-alkali soil on the floor, with the appropriate amount of nitrogen fertilizer, its growth and reproduction have a good role in promoting. How to match the quantity of nitrogen, phosphorus and potassium in the salt-bearing soils of the coastal areas is less studied at present. For this reason, we refer to the area along the coastal tidal spring fine