| 摘要 |
FIELD: agriculture.SUBSTANCE: composition comprises water-alcohol extracts of speedwell grass, birch leaves, meadowsweet grass, marigold flowers, fir or spruce needles, Echinacea grass, eucalyptus leaves, horsetail grass, flowers of helichrysum, balm lemon grass, thyme grass, bark of aspen, celandine grass, thallus of Iceland moss, garlic at a certain ratio of the components.EFFECT: use of the invention improves the productivity and winter hardiness of bee families by increasing the bee body resistance to ascospherosis, and increases the duration of the effect of the preparation.7 tbl, 1 ex |
