High-efficiency organic granulated fertilizer and preparation method thereof

Abstract

The invention discloses a high-efficiency organic granulated fertilizer and a preparation method thereof. The fertilizer comprises the following raw materials in percentage by weight: 10-78% of molasses fermentation liquid, 10-40% of fulvic acid and 10-70% of substrate, wherein the sum of the percentage of the raw materials is 100%. The preparation method of the fertilizer of the invention comprises the following steps of: laying the substrate in a spray granulation fluidized bed (1), and spraying the substrate with the atomized molasses fermentation liquid; discharging granules with the granularity of 2-4mm; recovering the fluidized and atomized fine powder by using a cyclone separator to be used as a new substrate; continuously spraying the granules with the atomized fulvic acid in a rotary granulator (7); and cooling finished products, and then packing the finished products. The fertilizer of the invention has high content of organic nutrients, and the absorption ratio and the utilization ratio reach more than 90%; the fertilizer is suitable for various kinds of soils and can obviously increase the yield and improve the quality of various kinds of plants, wherein the yield of grain crops can be increased by more than 15%, the yield of cash crops can be increased by more than 20%, and the yield of vegetables can be increased by more than 20%; and the fertilizer is a preferred product for producing organic green foods.

Description

technical field [0001] The invention belongs to the field of agricultural biotechnology, and in particular relates to a preparation method of high-efficiency organic granular fertilizer. Background technique [0002] In sugar and other food production processes, a large amount of waste is produced, many of which are not utilized, which not only causes environmental pollution, but also causes a great waste of resources. In fact, these food production wastes contain a lot of nutrients, and after biological fermentation, they can be turned into bio-organic fertilizers with high utilization value. There have also been domestic precedents of using these wastes from food production to make organic fertilizers, but most of them have not undergone biological fermentation or the fermentation is not complete, resulting in many unfavorable results. First, the products made contain toxic and harmful substances, which pollute the environment; second, Most of the existing production proc...

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Problems solved by technology

There have also been domestic precedents of using these wastes from food production to make organic fertilizers, but most of them have not undergone biological fermentation or the fermentation is not complete, resulting in many unfavorable results. First, the products made contain toxic and harmful substances, which pollute the environment; second, Most of the existing production processes use mechanical mixing or simple extrusion, resulting in poor product form; third, due to incomplete fermentation, the nutrient content of the product is not high, which cannot meet the nutritional needs of crops

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