The invention provides a specialized organic / inorganic composite biological
medicine fertilizer for watermelon, and a preparation method thereof. The weight parts of composition raw materials are as follows: 50-70 parts of
sludge produced by
sewage treatment, 20-30 parts of tree ash, 30-40 parts of watermelon vines, 20-30 parts of cow
manure, 15-20 parts of
bagasse, 5-7 parts of fishbone dust, 8-10 parts of oil cakes, 10-15 parts of the tree ash, 10-15 parts of
phosphorus slag, 8-10 parts of
poultry feather, 8-10 parts of monoammonium
phosphate, 10-12 parts of
triple superphosphate, 12-15 parts of
potassium chloride, 2-4 parts of
carboxymethyl chitosan, 20-30 parts of modified
bentonite, 10-12 parts of decomposed
coal, 2-4 parts of seven leaf clover, 9-11 parts of angled bittersweet, 8-10 parts of capillary
artemisia, 5-7 parts of fructus cnidii, 6-8 parts of fructus quisqualis, 3-5 parts of wormwood, 3-5 parts of
litsea cubeba, 8-10 parts of daturae flower
powder, 3-5 parts of paraffin, 1-1.25 parts of
zinc sulfate, 2-3 parts of
ferrous sulfate, 0.8-1.2 parts of
borax, 10-12 parts of
potassium fulvic acid, 3-4 parts of chili oil and 0.2-0.5 part of EM strains. A green
organic fertilizer is obtained by mixing a plurality of organic wastes and fermenting the mixture, thereby reducing environment pollutions. The specialized organic / inorganic composite biological
medicine fertilizer for the watermelon has the advantages of comprehensive
nutrition and enhanced sterilizing effects by mixing the fermented organic materials and
inorganic fertilizer and adding
medicine juice of the Chinese herbal medicine having insectidical functions. With the application of the
fertilizer, watermelon quality can be effectively increased; and the watermelon has green leaves, bright flower, prolonged flowering period and increased output.