The invention discloses a special
gardenia fertilizer as well as a preparation method and application thereof. The special
gardenia fertilizer comprises the following raw materials in parts by weight:18-26 parts of cinerite soil, 2-6 parts of
urea, 3-7 parts of a
phosphorus-
potassium nitrate fertilizer, 11-19 parts of
macleaya cordata, 23-31 parts of akebiaquinata and 25-35 parts of
sophora alopecuroide. The preparation method comprises the following steps: mixing cinerite soil with an
acetic acid solution, sealing, heating, stirring,
drying, and calcining so as to obtain pretreated cineritesoil; mixing and mixing
macleaya cordata and akebiaquinata, soaking with absolute ethyl
alcohol, adding deionized water, heating, and filtering so as to obtain filtrate; crushing
sophora alopecuroide,adding the
acetic acid solution, heating, stirring, adding the filtrate, performing ultrasonic treatment, performing
centrifugal separation, and abandoning precipitate so as to obtain a mixture; mixing the pretreated cinerite soil with the mixture, uniformly stirring,
drying, adding
urea and the
phosphorus-
potassium nitrate fertilizer, uniformly mixing, and
pelletizing, thereby obtaining the special
gardenia fertilizer. With a small amount of the special gardenia fertilizer, the morbidity of anthracnose and yellow diseases of gardenia can be greatly reduced, the flower amount is increased, the
flowering time is prolonged, flowers can be relatively large in size, and a weeding effect can be also achieved.