Macroelement water-soluble fertilizer containing polymorphic nitrogen and preparing method of macroelement water-soluble fertilizer

Abstract

The invention discloses macroelement water-soluble fertilizer containing polymorphic nitrogen and a preparing method of the macroelement water-soluble fertilizer. The macroelement water-soluble fertilizer containing polymorphic nitrogen comprises, by mass, 12%-30% of urea, 4%-10% of ammonia water, 10%-35% of potassium nitrate, 10%-38% of ammonium dihydrogen phosphate, 15%-28% of monopotassium phosphate, 1%-2% of magnesium nitrate and 3%-5% of water-soluble polymerized substance. Due to the fact that the ammonia water is added, ammoniation of potassium nitrate, ammonium dihydrogen phosphate and monopotassium phosphate in the drying process is completed, the technological problem that the urea and a nitrate nitrogen material cannot be directly mixed is solved, and a product cannot be agglomerated by generated urea phosphate during storage. The final product contains nitrate nitrogen, ammonium nitrogen and amide nitrogen, the granular structure of soil is increased through the water-soluble polymerized substance, and the effects of preventing the soil from hardening and improving the soil are achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizers, and in particular relates to a water-soluble fertilizer of a large number of elements containing polymorphic nitrogen and a preparation method thereof. The final product contains nitrate nitrogen, ammonium nitrogen and amide nitrogen. Background technique [0002] The nutrient release of traditional chemical fertilizers is too fast, and the effective utilization rate of fertilizers is low. Long-term large-scale application of chemical fertilizers not only increases crop production, but also brings great negative impacts on soil, crops and the environment. Studies have shown that conventional chemical fertilizers concentrate a large amount of nutrients and release them quickly in the early stage of application. Loss, or even reduce crop production due to burning seedlings; compared with traditional compound fertilizers, compound fertilizers, slow-release fertilizers and other fertili...

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to complete the ammonification of potassium nitrate, ammonium dihydrogen phosphate and potassium dihydrogen phosphate in the drying process by adding ammonia water, so as to solve the technical problem that urea and nitrate nitrogen materials cannot be directly mixed, and Prevent the production of urea phosphate from causing caking problems during product storage;

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