Photosynthetic bacteria (PSB) are bacteria that can photosynthesize, and they play an important role in nature. Due to their unique physiological characteristics, PSB have been widely used in agricultural production and can be used as an efficient and environmentally friendly biological fertilizer and water quality improver. By using PSB rationally, the yield and quality of agricultural products can be improved, the use of pesticides and fertilizers can be reduced, and the ecological environment can be protected.

Application in planting:
* Improve soil quality: PSB can decompose organic matter in the soil, improve soil fertility, and improve soil structure.
* Promote plant growth: Substances such as auxin and vitamins produced by PSB can promote plant growth and development and enhance plant disease resistance.
* Increase soil pH: PSB metabolize alkaline substances, and long-term use can help improve acidic soil.
* Increase crop yield: By improving the soil environment and promoting plant growth, PSB can increase crop yield and quality.

Application in aquaculture:
* Improve water quality: PSB can decompose organic matter in water, reduce the concentration of harmful substances such as ammonia nitrogen and nitrite, and improve water quality.
* As bait: PSB are rich in nutrients such as protein and vitamins, and can be used as bait for aquatic animals to increase their growth rate and survival rate.
* Disease prevention: PSB can inhibit the growth of pathogens in water and prevent aquatic animal diseases.

Usage:
* Foliar spraying: Dilute 1-2ml of PSB into water and spray it on the leaves of plants.
* Water splashing: Spraying PSB about 2-3ppm into water