The aquaponics system is like an exquisite "ecological magic cube", which organically combines aquaculture and vegetable cultivation to build a closed-loop ecological cycle chain. In a small water area, fish swim merrily. Their daily metabolic product - feces, is by no means useless waste. On the contrary, the rich nutrients such as nitrogen, phosphorus and potassium it contains are exactly the essential elements for plant growth. These excretions are decomposed and transformed by microorganisms in the water and instantly turn into the "nutrient source" for the vigorous growth of vegetables.
In the vegetable planting area, hydroponics or substrate cultivation methods are mostly adopted. The vegetables take root there and, with their well-developed roots, like tireless "nutrient hunters", accurately absorb the decomposed nutrients from the water. Their leaves become increasingly green and their branches grow stronger day by day. At the same time, the roots of the vegetables also possess magical "purifying power". They adsorb suspended impurities in the water and degrade harmful substances, continuously optimizing the living water quality for the fish, allowing the fish to always swim freely in a clear and oxygen-rich water environment. The two form a mutually complementary symbiotic relationship.
From the perspective of environmental protection, the aquaponics system has incomparable advantages. Traditional agriculture relies heavily on chemical fertilizers and pesticides, resulting in soil compaction, water pollution and damage to biodiversity. However, the aquaponics system completely abandons these drawbacks. It doesn't need to discharge sewage to the outside world. The water resources are recycled within the system with extremely low loss, greatly saving precious water resources and being a "blessing" for the agricultural development in arid and water-deficient areas. Moreover, without using pesticides and chemical fertilizers throughout the process, the produced fish and vegetables are naturally pure and of high quality, ensuring the safety of the dining table.
The economic benefits are equally remarkable. On the one hand, dual outputs of fish and vegetables are achieved on a unit area of land, and the land utilization rate is greatly increased. Whether it is the courtyard economy of small farmers or large-scale commercial farms, the income has increased significantly. Take a 20-square-meter aquaponics device on the roof of an ordinary city building as an example. Under reasonable planning, it is not difficult to harvest dozens of catties of fresh fish and hundreds of catties of vegetables in a year, which can not only meet the family's own needs but also sell the surplus products to generate income. On the other side, with the increasing demand of consumers for green and organic food, the market prospect of aquaponics products is broad and can easily occupy a place in the high-end food field.
Post time: Dec-27-2024