1. Trim and level the land one month before planting, spread the distiller's grains on the surface of the land with a thickness of about 10 cm, and then mix the distiller's grains with the turned soil evenly. You can grow crops or flowers only by aging and fermenting in the soil for one month.

2. Mix wet distiller's grains with 0.5- 1% urea (or 1-2% ammonium bicarbonate) by volume, pile them on the cement floor, cover them with plastic film, and ferment them in a closed way for more than one month, which can become an organic humic acid fertilizer with high fertility and can be used as an excellent base fertilizer for cultivating plants.

3. Mix chicken, duck and pig manure with the volume ratio of 65,438+00-20% to make wet distiller's grains, pile them on the cement floor and cover them with plastic film for closed fermentation for more than one month, which becomes an organic fertilizer with high fertility and can be used as an excellent farmer's base fertilizer for cultivating various plants.

4. The inferior raw soil rich in trace elements is ground, mixed into the wine residue at a volume ratio of 2-3 times, and fermented in a wet state for 3-6 months, thus becoming an excellent ripe soil for potted flowers.