FIELD: agriculture.
SUBSTANCE: method of obtaining organic-mineral complex humic fertilizer is characterized by the fact that in 600 ml of water with vigorous stirring and heating from 20°C 214 g of carbamide (NH2)2CO or 25 g of boric acid (H3BO3) or a mixture of 25 g of boric acid (H3BO3) and 214 g of carbamide (NH2)2CO is dissolved to obtain a solution, to the resulting solution 50 ml of a 2% liquid humic extract is added, or 6 g of ammonium molybdate (NH4)2 MoO4 are dissolved in 600 ml of water with vigorous stirring, 2.5 g of potassium hydroxide (KOH) are added, 25 g of boric acid are added (H3BO3) and intensively stirred to obtain a solution, 50 ml of a 2% liquid humic extract is added to the resulting solution, or 44 ml of 85% o-phosphoric acid (H3PO4) is added to 600 ml of water, stirred and neutralized 60 g of potassium hydroxide (KOH) to obtain a solution, 50 ml of a 2% liquid humic extract is added to the resulting solution, or in 400 ml of water with vigorous stirring and heating from 20°C 90 g of carbamide (NH2)2 CO and 85 g of potassium nitrate KNO3 are dissolved to obtain a solution, 500 ml of a 2% liquid humic extract is added to the resulting solution, and a liquid humic extract with a concentration of sodium or potassium of not more than 15 % or their absence to obtain a liquid humic extract in the final product — 0.1% or 1%, while controlling the pH and homogeneity of the solution by light scattering.
EFFECT: invention makes it possible to create a method for producing water-soluble complex fertilizers containing chelate complexes of humic substances with the necessary trace elements of plant nutrition without the use of additional chelating agents.
1 cl, 6 ex
