所谓合理施肥,是指要注意适时、适量。所谓适时,是指花卉需要时施,如发现花卉叶色变淡,植株生长细弱时,施肥即为适时。至于什么时候施什么肥,应根据花卉不同生育期而定,如苗期可多施些氮肥,以促进幼苗迅速、健壮地生长;孕蕾期可多施些磷肥,以促进花大籽壮;座果初期适当控制施肥,以利座果。无论什么时期施肥,都应注意适量,若施氮肥过多,易造成徒长;施钾肥过多,阻碍生育,影响开花结果。施肥时要注意以下几点:①要看花的种类。不同种类的花卉对肥料的要求不同。如桂花、茶花喜猪粪,忌人粪尿;杜鹃、茶花、栀子等南方花卉忌碱性肥料;需要每年重剪的花卉需加大磷、钾肥的比例,以利萌 The so-called rational fertilization, is to pay attention to timely, appropriate amount. The so-called timely, refers to the flowers Shi Shi Shi Shi, such as found that the fades of flowers fade, plant growth is weak, fertilization is timely. As for when to apply any fertilizer, flowers should be based on different reproductive period, such as seedling stage can be applied some nitrogen fertilizer to promote seedling rapid and robust growth; pregnant buds can be more than some phosphate to promote large seedlings; Early fruit appropriate control fertilization, to facilitate fruit. No matter what time of fertilization, should pay attention to the amount, if too much nitrogen fertilizer, easy to cause leggy; too much potassium, hinder birth, affecting flowering results. Fertilizer should pay attention to the following points: ① depends on the type of flower. Different types of flowers require different fertilizers. Such as sweet-scented osmanthus, Camellia hi pig manure, avoid human excrement; Rhododendron, camellia, gardenia and other southern flowers avoid alkaline fertilizers; need annual heavy cut flowers need to increase the proportion of phosphorus and potash,