Novel liquid nitrogen fertilizer and preparation method thereof

Abstract

The invention relates to a novel liquid nitrogen fertilizer and a preparation method thereof. The novel liquid nitrogen fertilizer comprises, by mass, 90-99% of a urea and ammonium nitrate mixed solution and 1-10% of a cyanamide nitrogen stabilizer, the cyanamide nitrogen stabilizer is a mixture of cyanamide, thiourea and dicyandiamide, and in the cyanamide nitrogen stabilizer, cyanamide accounts for 10-20%, thiourea accounts for 20-30%, and dicyandiamide accounts for 50-70%. According to the novel liquid nitrogen fertilizer, the nitrogen stabilizer is added into the liquid nitrogen fertilizer. The nitrogen stabilizer has obvious sterilization and inhibition effects on urease for decomposing urea and nitrosomas causing denitrification in soil, and is safe and pollution-free. In the fertilizer production process, cyanamide nitrogen stabilizers are respectively added into a fertilizer production process system according to a certain proportion for homogeneous mixing, and different types of liquid nitrogen fertilizers containing the nitrogen stabilizers are produced. The utilization rate of nitrogen in the liquid nitrogen fertilizer is increased, the effective period is prolonged, and the purpose of no topdressing or less fertilization is achieved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a novel liquid nitrogen fertilizer and a preparation method thereof. Background technique [0002] my country's chemical fertilizer industry has developed rapidly and has become the world's largest producer and consumer of chemical fertilizers, accounting for 30% of the world's total, ranking first in the world. [0003] Compared with developed countries, my country's fertilizer utilization rate is low, the formula is unreasonable, and the nutrients are not balanced. According to statistics, my country's nitrogen fertilizer utilization rate is 30% to 40%, of which urea is about 35% to 40%, and phosphorus fertilizer is 10% to 20%. Potassium fertilizer is 35% to 50%. my country's fertilizer utilization rate is 20 percentage points lower than that of developed countries. my country has become a big country in the production and consumption of chemical fertilizers,...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above technical problems, the present invention provides a new type of liquid nitrogen fertilizer and its preparation method to solve the technical problems in the prior art that the height and angle of the spray beam are inconvenient to adjust and the spray effect is poor

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