“Fish and vegetable symbiosis” to achieve zero pollution and emissions

Here, we have truly achieved zero pollution, zero emissions, and sustainable development, “explained farm manager Yu Jiaqiang, pointing to the water pump in the fish pond. The so-called” fish vegetable symbiosis “simply means that the water in the fish pond is pumped into the vegetable pond, and the fish manure and bait residue are decomposed by microorganisms and converted into the nutrients required for vegetable growth. When vegetables have absorbed all the nutrients, the purified water can return to the fish pond again, forming an ecological cycle system of “fish fertilizer water vegetable purification water water fish farming”.

The discharge of tail water from traditional aquaculture is a problem, and now pollution has turned into nutrition, without any waste being discharged to the outside. It only needs to clean up the fish feces that settle in the vegetable pond once a year. These fish feces have fully fermented and become rare organic fertilizers, “said Yu Jiaqiang.
However, the aquaculture water continuously circulates and does not require water replacement. In addition to natural evaporation and plant absorption, the water replenishment rate is only about 5%, which is about 95% less water than traditional models. In terms of management, it is particularly labor-saving and labor-saving. Because the water body has been recycled, only about 5 cubic meters of water need to be replenished every week. Turn on the water pump and pump for about 20 minutes, which is enough for vegetables to absorb and sunlight to evaporate for a week, “said Yu Jiaqiang.

How do hydroponic vegetables taste? The reporter casually picked a celery tree and took a light bite. Not only did it have less tendons and sufficient water, but it also had a refreshing, sweet, and full flavor. After eating, there was a lingering fragrance in the mouth. Because there are fish in the water, we dare not apply pesticides. If there is a problem with the fish, the entire system will collapse. Therefore, our vegetables are not treated with pesticides throughout the entire process, “said Yu Jiaqiang. At the same time, fish manure is one of the most comprehensive organic fertilizers in all animal manure. Therefore, in the fish vegetable symbiosis model, hydroponic vegetables are fed on fish manure throughout the entire process without the need for any additional fertilizers.

In addition, these vegetables are all planted in water, and the ground is completely hardened, isolating the breeding of pests. All ventilation openings are also equipped with insect prevention nets, so that pests will not easily enter the shed. Even if they do, they will be isolated and can be manually removed without causing extensive harm.