| abstract |
The invention discloses a special rapeseed fertilizer and a preparation method thereof. The special rapeseed fertilizer is prepared by the following raw materials in parts by weight: 30-40 parts of biogas residue, 20-25 parts of rapeseed meal, 20-25 parts of decomposed coal, 8-12 parts of gelatin, 7-11 parts of lime, 20-25 parts of animal waste, 15-18 parts of rice bran, 10-15 parts of coal cinder, 15-20 parts of egg shells, 9-13 parts of a soil improver, 5-10 parts of ferrous sulfate, 1-5 parts of ammonium molybdate, 1-3 parts of manganese sulfate and 1-3 parts of nanocarbon. The gelatin and the decomposed coal in the formula of the special rapeseed fertilizer have functions of improving and repairing the soil and are good for effective release of the fertilizer effect; the nanocarbon is capable of passivating and repairing the soil polluted by heavy metal; the special rapeseed fertilizer can not pollute the environment and the crops; the yield and the quality of rape can be greatly improved. |