The invention provides a method for preparing a special compound biological
medicine fertilizer for apple trees, which comprises the following raw materials in parts by weight: 30-40 parts of kitchen wastes, 20-30 parts of tobacco straws, 10-15 parts of
plant ash, 10-15 parts of distillers' grains, 16-18 parts of
potassium humate, 10-12 parts of bird feathers, 18-22 parts of modified
fly ash, 12-14 parts of
urea, 11-13 parts of
ammonia water, 14-16 parts of
diammonium phosphate, 13-15 parts of
potassium sulfate, 11-13 parts of
calcium superphosphate, 2-4 parts of
cnidium fruit, 2-4 parts of aloe, 3-5 parts of
eucalyptus leaves, 2-4 parts of pharbitis seed, 3-5 parts of
cyrtomium rhizome, 0.5-0.8 part of
zinc sulfate, 0.8-1.0 part of
magnesium sulfate, 0.7-0.9 part of
boric acid, 0.4-0.6 part of
fermentation preparation and a proper amount of
citronella oil. After various organic wastes are mixed and fermented to produce green organic fertilizers, the environmental
pollution is reduced, the fermented
organic matter is mixed with the
inorganic fertilizer, the Chinese herbal
medicine juice (
citronella oil) with insecticide properties is added, the
nutrition is more comprehensive, and the
bactericidal effect is increased; the
fertilizer has the advantages of obviously improved
fertilizer utilization ratio, single time of application, effective slow release, reduced fertilization frequency, reduced fertilizer cost and improved economic benefit; and after the application of the fertilizer, the quality of the apple trees can be effectively improved, and the yield can be improved.