| 摘要 |
FIELD: agriculture. ^ SUBSTANCE: biological growth promoter comprises aqueous extract of mechanical composite based on larch bark used as plant growth promoter. Mechanical composite is produced by processing of mixture containing larch bark, alkaline agent and abrasive material used in the ratio of 40-70:5-50- the balance, respectively. Mechanical composite is processed by means of flow-type mechanical activator. ^ EFFECT: increased growth promoting efficiency. ^ 6 tbl, 6 ex |
