並列摘要
According to the factors affected flower bud formation, citrus plants could divide into three types, that were chilling sensitive, drought sensitive and high temperature sensitive type. Chilling sensitive type citrus plants, included most of main citrus of Taiwan like 'Ponkan' mandarin, 'Tangkan' tangor,'Liucheng' sweet orange and 'Madou' pumelo, almost had no forcing culture ability, while other two types citrus plants could easily induce off-season fl owers and fruits. This paper review the basic studies and forcing cultural practices of three citrus plants, that were lemon, calamodin and kumquat, in Taiwan.