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Inside the greenhouse, rows of NFT growing pipes are neatly arranged. Lush green vegetables unfurl from the planting holes, their roots submerged in a thin nutrient solution film. This is not a harvest scene from traditional farmland, but a modern agricultural miracle created by the NFT hydroponic system — soilless cultivation that achieves an annual output of over 3,000 tons, freeing vegetable farming from the constraints of land and seasons.
The essence of NFT hydroponic technology lies in supplying plants with growth energy via a continuously circulating shallow nutrient solution film. Plant roots are partially immersed in 3-5 cm deep nutrient solution to absorb water and nutrients, while the rest are exposed to air to get sufficient oxygen — perfectly resolving the supply-demand conflicts of water, fertilizer, and air in traditional farming.
Composed of a nutrient solution tank, growing pipes, a circulating water pump, and intelligent monitoring equipment, the system works as follows: after precise proportioning, the nutrient solution flows steadily along the pipes; once nutrient supply is complete, it flows back to the tank for recycling, forming a closed-loop ecosystem.
This design enables full-process control of the farming process: monitoring equipment adjusts the nutrient solution’s pH value and trace element content in real time, ensuring vegetables efficiently absorb nutrients like nitrogen, phosphorus, and potassium. Without soil as a medium, it not only avoids soil-borne diseases, pests, and heavy metal pollution, but also eliminates the tedious step of soil disinfection, making the growing environment cleaner and safer.
The application of the NFT system has brought a qualitative leap to vegetable harvests. In terms of growth efficiency, the direct nutrient supply to roots shortens the vegetable growth cycle by 20%-30%, allowing 6-12 crop rotations per year — with a yield per unit area 2-3 times that of traditional soil cultivation.
In terms of resource use, the closed-loop system boosts water utilization by over 90% and drastically reduces fertilizer waste, truly realizing water- and fertilizer-saving green farming.
Even more impressive is the comprehensive upgrade in vegetable quality. The soil-free growing environment keeps pesticide residues in hydroponic vegetables near zero, with heavy metal content far below national standards. By precisely regulating the nutrient solution composition and light spectrum, hydroponic vegetables have higher vitamin C content, significantly increased levels of trace elements like iron and zinc, and a crisper, tenderer, and sweeter taste. Workers move between planting racks, harvesting fresh, soil-free vegetables — each plump and bright, carrying the high-quality promise of tech-enabled agriculture.
From urban farms to large-scale planting bases, the NFT hydroponic system demonstrates strong adaptability. Its modular design saves 70% of planting space, enabling efficient production of fresh vegetables even in cities or arid regions with scarce arable land. The automated monitoring and regulation functions cut labor costs by over 60%, making farming management more convenient and efficient.
The NFT system can not only use purified sewage or biogas slurry as raw materials for nutrient solution to realize resource recycling, but also reduce carbon emissions through high-density cultivation — providing an effective path for low-carbon agricultural transformation. Today, more and more hydroponic bases are adopting NFT technology, driving the intelligent transformation of agriculture.
