Highly effective carbamide and preparation method and application thereof

Abstract

The invention relates to a preparation method and application for efficient urea and a relative, and the preparation method and application is formed by the polymerization amino acid or the salt with a weight proportion of 0.01 to 2.0, urease inhibitor with weight proportion of 0.01 to 0.2, the nitrification inhibitor with weight proportion of 0.01 to 0.6, and the common urea with weight proportion of 97.2 to 99.97. The efficient urea is produced by adding the mixture solution of polymerization amino acid or the salt, the urease inhibitor and the nitrification inhibitor into the common urea at fusing state, and then mixing and granulating. The invention provides the application of the efficient urea in agriculture; for the field crop, the economic crop, the fruit and vegetable, and the flowers, the efficient urea can promote to comprehensively regulate the physiological and biochemical effect inside the plant so as to sufficiently excite the plant endogenous somatotropin and accelerate the nutrition producing, as well as improving the utilization and absorption of the urea, increasing the utilization rate by 20 percent to 60 percent. By the bonding effect of the polymerization amino acid or the salt molecule chemical bond and the effect of the urease inhibitor and the nitrification inhibitor, the invention slowly releases the urea in the soil, and increases the releasing time from 50 days up to around 120 days.

Description

technical field [0001] The invention relates to a high-efficiency urea, in particular to a high-efficiency urea produced by using ordinary urea, a plant nutrient absorption accelerator, a urease inhibitor, and a nitrification inhibitor, a preparation method thereof, and an agricultural application of the high-efficiency urea. Background technique [0002] Relevant experts pointed out that the amount of chemical fertilizers used in my country has far exceeded the international average level. The current application amount, taking nitrogen fertilizer as an example, is already three times that of the United States, 1.5 times that of France, and 1.6 times that of Germany. In this case, Increasing the amount of nitrogen fertilizer will bring two problems, one is diminishing marginal benefit and lower product quality. According to the National Chemical Fertilizer Network of the Chinese Academy of Agricultural Sciences: From 1952 to 2002, the return rate of chemical fertilizers in m...

AI Technical Summary

Problems solved by technology

However, the production of coated urea is difficult, and the coating effect is difficult to guarantee; and the commonly used urease inhibitors cannot be well mixed with urea, and cannot be added to the industrial process of urea, which brings great difficulties to industrial production

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