Academic
Full analysis of NFT hydroponic system technology: the "hardcore technological power" behi
作者: 时间: 2026-08-23
NFT (Nutrient Film Technique) hydroponic system is often misunderstood as a simple assembly of "several tubes and a water pump". But in reality, the truly efficient NFT system is a precision engineering that integrates multiple disciplines such as fluid mechanics, materials science, plant nutrition, and automation control.
Why do some NFT systems grow vegetables quickly and well, while others frequently clog pipes, rot roots, and have uneven growth? The core difference lies in the 'technical details'.
As a member unit of the Facility Agriculture Association with 16 independent intellectual property rights, 4 production processes, and three major product lines including DFT hydroponics, NFT hydroponics, and plant factories, LEAFYMAN will deeply analyze the seven core technologies behind NFT hydroponic systems and guide you to understand what true "hardcore technological power" is.
1、 The technical essence of NFT hydroponic system: creating an ideal environment for "water gas symbiosis" for roots
The basic principle of NFT system is to continuously flow nutrient solution through plant roots in the form of an extremely thin liquid film (1-2 millimeters) through inclined pipes (usually with a slope of 1:80 to 1:100). The bottom of the root system contacts the liquid film to absorb water and nutrients, while the upper part of the root system is exposed to moist air to absorb oxygen.
This definition may seem simple, but achieving "uniform liquid film, continuous stability, and no blockage or leakage" in the actual production of large areas, long pipelines, and multiple bends poses great technical challenges.
In the development of NFT systems, Yecai Xia Technology has carried out refined research and development around the following core technologies:
2、 Seven core technologies of Yecaixia Technology NFT system
Technology 1: Fluid Dynamics Channel Design (Patent Technology)
Whether the liquid film is uniform directly determines whether the crop growth is consistent. Common problems include: excessive liquid film at the inlet of the pipeline, flow interruption at the end, liquid accumulation or uneven flow velocity at the elbow.
Yecaixia Technology Solution: Based on CFD (Computational Fluid Dynamics) simulation, optimize the cross-sectional shape, bottom guide groove curvature, slope, and elbow structure of NFT pipelines to ensure that the liquid film thickness is controlled at 1-2mm and the flow rate is stable at 2-4L/min during long-distance transportation. This technology has obtained national patents and is one of the core technological barriers of the Yecai Xia NFT system.
Technology 2: Pipeline Material and Formulation Process (Independent Material Process)
NFT pipeline, which is exposed to nutrient solution for a long time, needs to be acid and alkali resistant, ultraviolet resistant, anti-aging, and cannot release substances harmful to plants. Ordinary PVC pipes are prone to brittleness or precipitation of plasticizers under long-term exposure to sunlight and nutrient solution immersion.
Yecaixia Technology Solution: By independently developing material formulas, using high-strength UV resistant and weather resistant PVC, and optimizing pipe wall thickness (above 3.0mm), the system ensures a service life of over 10 years in outdoor greenhouses and artificial light environments. At the same time, the smoothness of the inner wall of the pipe has been specially treated, effectively reducing the retention of nutrient solution and the growth of algae.
Technology 3: Precise liquid supply circulation system (dual pump redundant design and intelligent control)
The supply water pump of NFT system is the "heart". Once the water pump malfunctions and the liquid film is interrupted, crops may be damaged within a few hours. Meanwhile, crops at different growth stages have varying requirements for liquid supply frequency.
Yecai Xia Technology Solution:
Dual pump redundancy design: one in use and one backup. In case of main pump failure, the backup pump will automatically start and switch seamlessly.
Variable frequency speed regulation technology: According to the length of the pipeline and planting density, the flow rate can be infinitely adjusted to avoid "inlet flooding and outlet dryness".
Intelligent timed liquid supply strategy: Built in multiple liquid supply modes (continuous liquid supply, intermittent liquid supply, day night differentiated liquid supply), which can be flexibly set for different crops and growth stages such as lettuce and spinach.
Technology 4: Multi stage filtration and water treatment module
During the circulation of nutrient solution, it is easy to mix in root debris, algal spores, and impurities, leading to pipeline blockage or disease transmission.
Yecaixia Technology Solution: Configure a three-level filtering system:
First level: precipitation+coarse filtration (50 mesh)
Secondary: Fine filtration (120 mesh)
Level 3: UV/ozone disinfection and sterilization
Ensure the cleanliness of the nutrient solution and reduce root rot and disease occurrence from the source.
Technology 5: Intelligent Environment Linkage Control Technology (IoT)
The environmental sensitivity of NFT systems determines that their deep integration with intelligent environmental control systems is an inevitable choice. Yecai Xia Technology integrates NFT devices with greenhouse environmental control.
Yecai Xia Technology Solution:
Integrated sensors: Real time monitoring of temperature, humidity, light, CO ₂, nutrient solution EC/pH/liquid temperature.
The controller adopts industrial grade PLC/embedded system, which automatically adjusts the sunshade net, wet curtain fan, fill light, CO ₂ generator, nutrient solution freezer and other equipment according to preset strategies.
Support remote monitoring and alarm on mobile apps/computers, enabling real-time monitoring of environmental dynamics even when not in the park.
Technology 6: Modular planting units and three-dimensional expansion structures
Yecai Xia Technology has designed the NFT system as a highly modular planting unit, which can be quickly disassembled and flexibly expanded.
Yecai Xia Technology Solution:
The standard planting unit includes: liquid supply main pipe, reflux main pipe, planting pipeline, planting cup, plug, bracket connector, etc.
All joints adopt a self-locking quick connect design, which does not require glue and can be installed by hand, greatly reducing construction difficulty.
The three-dimensional planting frame adopts a combination of hot-dip galvanized steel and aluminum alloy, with strong load-bearing capacity. It can stack 3-6 layers, and each layer has an independent liquid supply/reflux design to ensure uniform distribution of liquid film in all layers.
Why do some NFT systems grow vegetables quickly and well, while others frequently clog pipes, rot roots, and have uneven growth? The core difference lies in the 'technical details'.
As a member unit of the Facility Agriculture Association with 16 independent intellectual property rights, 4 production processes, and three major product lines including DFT hydroponics, NFT hydroponics, and plant factories, LEAFYMAN will deeply analyze the seven core technologies behind NFT hydroponic systems and guide you to understand what true "hardcore technological power" is.
1、 The technical essence of NFT hydroponic system: creating an ideal environment for "water gas symbiosis" for roots
The basic principle of NFT system is to continuously flow nutrient solution through plant roots in the form of an extremely thin liquid film (1-2 millimeters) through inclined pipes (usually with a slope of 1:80 to 1:100). The bottom of the root system contacts the liquid film to absorb water and nutrients, while the upper part of the root system is exposed to moist air to absorb oxygen.
This definition may seem simple, but achieving "uniform liquid film, continuous stability, and no blockage or leakage" in the actual production of large areas, long pipelines, and multiple bends poses great technical challenges.
In the development of NFT systems, Yecai Xia Technology has carried out refined research and development around the following core technologies:
2、 Seven core technologies of Yecaixia Technology NFT system
Technology 1: Fluid Dynamics Channel Design (Patent Technology)
Whether the liquid film is uniform directly determines whether the crop growth is consistent. Common problems include: excessive liquid film at the inlet of the pipeline, flow interruption at the end, liquid accumulation or uneven flow velocity at the elbow.
Yecaixia Technology Solution: Based on CFD (Computational Fluid Dynamics) simulation, optimize the cross-sectional shape, bottom guide groove curvature, slope, and elbow structure of NFT pipelines to ensure that the liquid film thickness is controlled at 1-2mm and the flow rate is stable at 2-4L/min during long-distance transportation. This technology has obtained national patents and is one of the core technological barriers of the Yecai Xia NFT system.
Technology 2: Pipeline Material and Formulation Process (Independent Material Process)
NFT pipeline, which is exposed to nutrient solution for a long time, needs to be acid and alkali resistant, ultraviolet resistant, anti-aging, and cannot release substances harmful to plants. Ordinary PVC pipes are prone to brittleness or precipitation of plasticizers under long-term exposure to sunlight and nutrient solution immersion.
Yecaixia Technology Solution: By independently developing material formulas, using high-strength UV resistant and weather resistant PVC, and optimizing pipe wall thickness (above 3.0mm), the system ensures a service life of over 10 years in outdoor greenhouses and artificial light environments. At the same time, the smoothness of the inner wall of the pipe has been specially treated, effectively reducing the retention of nutrient solution and the growth of algae.
Technology 3: Precise liquid supply circulation system (dual pump redundant design and intelligent control)
The supply water pump of NFT system is the "heart". Once the water pump malfunctions and the liquid film is interrupted, crops may be damaged within a few hours. Meanwhile, crops at different growth stages have varying requirements for liquid supply frequency.
Yecai Xia Technology Solution:
Dual pump redundancy design: one in use and one backup. In case of main pump failure, the backup pump will automatically start and switch seamlessly.
Variable frequency speed regulation technology: According to the length of the pipeline and planting density, the flow rate can be infinitely adjusted to avoid "inlet flooding and outlet dryness".
Intelligent timed liquid supply strategy: Built in multiple liquid supply modes (continuous liquid supply, intermittent liquid supply, day night differentiated liquid supply), which can be flexibly set for different crops and growth stages such as lettuce and spinach.
Technology 4: Multi stage filtration and water treatment module
During the circulation of nutrient solution, it is easy to mix in root debris, algal spores, and impurities, leading to pipeline blockage or disease transmission.
Yecaixia Technology Solution: Configure a three-level filtering system:
First level: precipitation+coarse filtration (50 mesh)
Secondary: Fine filtration (120 mesh)
Level 3: UV/ozone disinfection and sterilization
Ensure the cleanliness of the nutrient solution and reduce root rot and disease occurrence from the source.
Technology 5: Intelligent Environment Linkage Control Technology (IoT)
The environmental sensitivity of NFT systems determines that their deep integration with intelligent environmental control systems is an inevitable choice. Yecai Xia Technology integrates NFT devices with greenhouse environmental control.
Yecai Xia Technology Solution:
Integrated sensors: Real time monitoring of temperature, humidity, light, CO ₂, nutrient solution EC/pH/liquid temperature.
The controller adopts industrial grade PLC/embedded system, which automatically adjusts the sunshade net, wet curtain fan, fill light, CO ₂ generator, nutrient solution freezer and other equipment according to preset strategies.
Support remote monitoring and alarm on mobile apps/computers, enabling real-time monitoring of environmental dynamics even when not in the park.
Technology 6: Modular planting units and three-dimensional expansion structures
Yecai Xia Technology has designed the NFT system as a highly modular planting unit, which can be quickly disassembled and flexibly expanded.
Yecai Xia Technology Solution:
The standard planting unit includes: liquid supply main pipe, reflux main pipe, planting pipeline, planting cup, plug, bracket connector, etc.
All joints adopt a self-locking quick connect design, which does not require glue and can be installed by hand, greatly reducing construction difficulty.
The three-dimensional planting frame adopts a combination of hot-dip galvanized steel and aluminum alloy, with strong load-bearing capacity. It can stack 3-6 layers, and each layer has an independent liquid supply/reflux design to ensure uniform distribution of liquid film in all layers.