COMPLEX MINERAL FERTILISER FOR FLAX AND METHOD OF OBTAINING THEREOF Russian patent published in 2014 - IPC C05D9/02 

FIELD: chemistry.

SUBSTANCE: complex mineral fertiliser for flax includes nitrogen-containing, phosphorus, potassium components, as well as microadditives. A ratio of N:P:K in it is equal 1:(1.25-1.5):(2.0-2.5). As the microadditives taken are boron and zinc or boron and magnesium in accordance with compositions: for long-fibred flax - N- 12-15%; P₂O₅ - 15-20%; K - 25-30%; B - 0.2%; Zn - 0.4%; for seed flax N - 12-15%; P₂O₅ - 15-20%; K - 25-30%; B - 0.2%; MgO - 3-7%. The method of obtaining the complex mineral fertiliser for flax includes mixing the phosphorus, nitrogen-containing and potassium components, introduction of the microadditives, granulation of the mixture and drying of the final product. As the nitrogen-containing component taken is ammonia, or ammonia and ammonia nitrate, or ammonia and carbamide; phosphoric acid is neutralised with ammonia with obtaining a phosphate pulp, and the microadditives are introduced either into phosphoric acid, or into the phosphate pulp.

EFFECT: increased yield of both long-fibred flax and seed-flax.

8 cl, 10 tbl