笔者在业余养花实践中发现,用已锈的铁末掺和在盆土表层,可以促进花木生长。受试花木有铁树、茶花、杜鹃、含笑、月季、金桔等。铁末用量根据花盆及植株的大小不同,每盆约200—400克不等,大盆大株多施,小盆小株少施。施用铁末后,浇水、施肥及其它管理照常进行。施用半年到一年后的观察表明,与同样管理但不施铁末的同种 The author found in practice in amateur flowers, with rusty iron powder mixed in the basin surface, can promote the growth of flowers and trees. Takeshusen trees were tested, Camellia, Rhododendron, smiling, rose, kumquat and so on. According to the size of iron pots and plants according to the size of each pot about 200-400 grams, large pots and more facilities, small plants and small plants less facilities. After the iron is applied, watering, fertilizing and other management are carried out as usual. Observations from six months to one year after administration showed the same kind of administration as the same management but not iron-deficiency