Abstract:

This study is done in order to apply biogas fertilizer cleanly and efficiently in planting garden flowers. It comprised three sub-tests, namely biogas slurry purification, optimal time of biogas slurry spraying and garden raw soil’s aging. And its material was chrysanthemum and fruit mulberry planted in pots. The results showed as follows: (1) the optimal deal way was walnut shells filter with 3 cm diameter and 50 cm thickness. (2) The optimal concentration of spraying foliar was 60% concentration, and the optimal time was 7 days to chrysanthemum and it was 11days to fruit mulberry. (3) The optimal quantity to garden raw soil’s aging was 66.7 L/t. The way was adding 66.7 L biogas fertilizer (biogas slurry + biogas residue) in 1 t garden raw soil before planting, spraying 33.3 L biogas slurry (concentration 60%) every 6 days after planting, the raw soil maturation can mature and fit for planting garden plants after 50 days.