Rice slow-release fertilizer and preparation method thereof

The invention discloses rice slow-release fertilizer. The rice slow-release fertilizer consists of the following raw materials in parts by weight: 25-30 parts of manioc waste, 40-45 parts of excrement of livestock, 34-39 parts of straw, 15-20 parts of bean dregs, 5-10 parts of calcium bentonite, 8-12 parts of attapulgite, 3-7 parts of heteroauxin, 15-20 parts of urea, 11-15 parts of monoammonium phosphate, 5-9 parts of ammonium hydrogen carbonate, 3-7 parts of potassium chloride, 1-3 parts of magnesium sulfate, 0.3-0.6 part of boron sulfate, 0.2-0.5 part of zinc sulfate, 15-19 parts of paraffin, 8-13 parts of coated resin, and 6-10 parts of talcum powder. The invention also discloses a preparation method of the rice slow-release fertilizer. The fertilizer prepared by the invention is high in utilization rate, the loss of the fertilizer is reduced, the rice yield can be increased, the rice quality is improved, and the rice resistance is enhanced. 本发明公开了种水稻缓释肥料，由以下按照重量份的原料组成：木薯渣25-30份、畜禽粪便40-45份、秸秆34-39份、豆渣15-2