对从福建建欧县引种的泽泻[Alisma orientalis(Sam) Juiep.]进行了探索性研究，将其由秋 种改为冬种，使得冬闲土地充分利用，采取1年两季水稻的间隔轮作，以减少病虫害，防止早抽苔，解决 “双花”难题，从而提高了泽泻质量和产量，亩产由100 kg提高到300 kg.同时在栽培技术上精选土地、 种子，适时播种、育苗、加强田间管理、施肥、防虫等。

Oriental water-plantain rhizome has a liking for sunlight temperature of 16～20'C and humid soil. It matures in 160 days. Our city has a oceanic climate with a mean temperature of 21℃,the coldest being 15—C ,and rich sunlight. We transformed the summer,autumn seeds in winter because there were a lot of unoccupied field in winter. We had a higher per mu yield from 100 to 300 kg.At the beginning of winter,varieties of oriental water-pharntain rhizome were planted in good soil which was given 1500 kg night-soil,100 kg compound fertilizer 2～3 days after the rice had been harvested. The seedlings in 38～45 days were provided a shed in nursery garden given by water to make the temperture drop.The seedilings were transplanted to the field shallowly 6000 pears per mu. After 15～20 days，straw needed to cut,followed by water shallowly.Three times of urea were given to them every 20 days after transplanting:7.5 kg,15kg and 25 kg. And diseases and pests were avoided.Collected in 115 days, they were simmered for 2 days,turning over every 24 hours.After 3 days they were simmered again and sheded.So the medicine oriental water-plantain rhizome was prepared.