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苏铁是热带和亚热带植物,在温带地区很少开花、结籽。繁殖多沿用分蘖法,但获苗量少,生长又慢。作者于1979～1981年在苏铁开花时进行多次人工授粉,并进行了播种和育苗等试验,为今后在北温带苏铁有性繁殖和一次育出大量小苗等方面,提供了新的途径。
Cycas is a tropical and subtropical plant that seldom flowers and seeds in temperate regions. Reproduction and use of more tillers, but by the seedling less growth and slow. The author conducted many artificial pollination during the bloom of cycads from 1979 to 1981 and carried out experiments such as sowing and nursery for seedling so as to provide a new way for future sexual reproduction of cycads in the north temperate zone and breeding a large number of seedlings once.