A preparation method of a special
fertilizer for nursery stock
transplantation comprises the following steps: 1, mixing
fly ash with
crop straws, fermenting the obtained mixture in a
fermentation tank, removing the fermented material,
drying the fermented material, and mixing and granulating the dried fermented material, monoammonium
phosphate and
potassium selenite to obtain grains 1; 2,
drying young tangelos in the sun,
drying the young tangelos, crushing the dried young tangelos by a
crusher, adding an
ethanol solution with the concentration of 50% according to a
solid-to-
liquid ratio of 1:20, stirring the crushed young tangelos and the
ethanol solution, filtering the obtained solution to obtain an
ethanol extract, and evaporating the ethanol extract until the ethanol extract is dry in order to obtain a
powder 1; 3, calcining rice husks in a closed environment to obtain carbon
powder, adding water to immerse the carbon
powder, filtering the obtained solution, adding water and the powder 1, adding
dimethyl formamide,
methyl jasmonate and
sodium alginate, heating the obtained solution for a period of time, cooling the heated solution, filtering the cooled solution, and drying the filtered solution to obtain a material 1; and 4, mixing the granules 1 with the material 1, and carrying out
extrusion molding by using a
heat sealer to prepare the special
fertilizer for nursery stock
transplantation. The special
fertilizer can well reduce the loss of water in newly transplanted nursery stocks, keep good growth vigor of the newly transplanted nursery stocks and improve the
survival rate of the newly transplanted nursery stocks.