The invention relates to the field of composite fertilizers for crops, and concretely relates to a special slow release composite
fertilizer for sesame plantation. The composite
fertilizer is prepared by using the raw materials, by weight, 20-25 parts of decomposed
livestock and poultry
night soil, 10-12 parts of rice
husk, 10-12 parts of
sorghum straw, 3-6 parts of wood
chip, 0.1-0.2 parts of
gypsum powder, 18-20 parts of
ammonium hydrogen phosphate, 1-2 parts of
amino acid powder, 30-35 parts of
potassium dihydrogen
phosphate, 8-10 parts of
urea-
formaldehyde resin, 35-40 parts of
urea, 8-10 parts of
ammonium chloride, 4-5 parts of
sodium tetraborate, 1-3 parts of
sodium silicate, 15-18 parts of perilla cake
meal, 1-3 parts of
bark of
Debregeasia orientalis, 10-12 parts of
sludge compost, 0.01-0.02 parts of
nordihydroguaiaretic acid, 2-3 parts of tungoiltree seed shell, 0.02-0.05 parts of
cellulase, 0.05-0.08 parts of an EM inoculant and 3-5 parts of an assistant. The slow release composite
fertilizer enables nutrients to be adsorbed and coated, so the nutrients cannot be lost, the fertilizer effect is lasting, and the fertilizing rule accords with the fertilizer demanding rule of sesame growth; and contained
active components can promote the absorption and utilization of the nutrients by the roots of sesame plants, so the
plant growth is strong, the fruit ratio is high, grains are plump, and the yield and income increasing effect is obvious.