FIELD: agriculture.
SUBSTANCE: invention relates to agriculture. Biological fertilizer includes cereal straw and nitrogen fertilizers, wherein it additionally contains liquid manure, micronutrient fertilizers, while cereal straw is used of winter wheat or barley as nitrogen fertilizers use carbamide-ammonia mixture, as a micronutrient fertilizer use sulfate manganese. All components are taken at a certain ratio.
EFFECT: invention improves soil fertility.
1 cl, 4 ex
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