杜鹃花极喜肥,它宜用酸性或低碱性氮、磷、钾含量均较高的肥力缓和、肥效较长的肥料。由于品种不同,吸肥量也有差异。四海波、双花红、蛤蟆牡丹等用肥量要少;而仙女舞、五宝珠、富贵姬等则比较耐肥,其中大叶杜鹃耐肥力最强。应本着薄肥勤施的原则,切忌浓肥。一般说来,一年生苗不用施肥,二—四年生苗可施液肥,而大植株则干肥、液肥皆可施用。 Rhododendron is very fond of fertilizer, it is appropriate to use acidic or low alkaline nitrogen, phosphorus and potassium content of higher fertility and fertilizer, fertilizer longer. Due to different varieties, the amount of fat absorption are also different. Sihai wave, double red, toad peony and other fertilizer to be less; and fairy dance, pearl, rich Ji, etc. are more resistant to fertilizer, of which the largest leaf Rhododendron most resistant to fertility. Should be based on the principle of thin fertilizer Qin Shi, avoid fatty. In general, no annual fertilization fertilization, two-four-year-old seedlings can be applied liquid fertilizer, and large plant dry fertilizer, liquid fertilizer can be applied.