A nutritional-type fertilizer and a preparation method thereof

Abstract

The invention discloses a nutritional-type fertilizer. The fertilizer is prepared from following raw materials in parts by weight: 35-40 of gypsum, 25-30 of bentonite, 13-16 of diammonium phosphate, 10-13 of potassium fulvate, 1-2 of ammonium molybdate, 1-3 of copper sulfate, 1-2 of ferrous sulfate, 3-4 of boric acid, 2-3 of polyvinyl alcohol, 4-6 of chitosan, 3-7 of sodium alginate, 8-12 of a soil conditioner and a proper amount of water. The fertilizer adopts the potassium fulvate and plant essential nutrient elements as components. The ratio of the plant nutrients is reasonable. The fertilizer has characteristics of capability of allowing premature ripening and preventing premature senility for grain crops, vegetables, fruits and economic crops. The fertilizer prepared from the chitosan and the boric acid not only is capable of killing pests, preventing diseases for plants and functioning as a fertilizer, but also is capable of decomposing animal and plant residual bodies and trace metal elements, thus converting the residual bodies and the trace metal elements into nutrients for the plants, enhancing plant immunity and promoting plant health. The bentonite has strong moisture adsorption capability, and can absorb water having a volume of 8-20 times of the volume of the bentonite itself and swell to 30 times in volume. The bentonite has certain glutinousness, thixotropy and lubricity. The blend of the bentonite and silt has plasticity and caking property, and has strong cation exchange capability and adsorption capability.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a nutritional fertilizer and a preparation method thereof. Background technique [0002] At present, fertilizers mainly include nitrogen, phosphorus, potassium and chlorine. Although the ratio of nitrogen, phosphorus and potassium can be adjusted according to the fertilizer requirements of plants to better meet the needs of crops, with the increase of fertilizer concentration, the nutrient content of raw materials is also getting higher and higher. The content is getting lower and lower; the application of compound fertilizers with only nitrogen, phosphorus, and potassium can only give plants the most basic material requirements, and cannot better meet the growth of plants. In addition, there are some difficult problems in the application of fertilizers, such as the relatively low utilization rate of fertilizers and the pollution of the ecological environment caused by exces...

AI Technical Summary

Problems solved by technology

Although the ratio of nitrogen, phosphorus and potassium can be adjusted according to the fertilizer requirements of plants to better meet the needs of crops, with the increase of fertilizer concentration, the nutrient content of raw materials is also getting higher and higher. The content is getting lower and lower; the application of compound fertilizers with only nitrogen, phosphorus, and potassium can only give plants the most basic material requirements, and cannot better meet the growth of plants

In addition, there are some difficult problems in the application of fertilizers, such as the relatively low utilization rate of fertilizers, the pollution of the ecological environment caused by excessive application of chemical fertilizers, etc.

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