Drip irrigation uniformity >95%, accuracy >97%, fertilizer uniformity >95%.
Conclusion and evaluation: The greenhouse precision fertilization irrigation system, irrigation, fertilization uniformity and accuracy have met or exceeded the design requirements, and have been fully recognized by the experimental unit. The experimental results prove that such a technology can bring considerable economic benefits if it can be widely promoted.
Facility agriculture is a high-tech, high-input, high-output, high-efficiency intensive production method. Foreign development is quite fast. However, most of the solar greenhouses in China do not use fertilisers, even if they are used. Fertilizer, the amount of fertilizer is very uneven. Although in recent years there are also manufacturers in the country to produce venturi-type, jet-type fertilizer, but the performance is not very good, and no production capacity. Especially in the field of precision fertilization irrigation equipment with high technical level, it is basically blank, which greatly reduces the actual production efficiency of the greenhouse. Beijing Jiayuan Yirun Engineering Technology Co., Ltd. has developed a greenhouse precision fertilization irrigation system to adapt to this situation. The application of this result will bring considerable economic benefits to the development of agriculture.
1. There is obvious increase in production and water saving.
Tests prove that: when used properly, it can generally increase production by about 30%. The water saving effect is very significant. The system can save more than 70% of water compared with the traditional flood irrigation method; it saves more than 30% of water by micro-spray irrigation; it also saves 10% of water than the general drip irrigation.
2. High fertilizer utilization rate.
Because the system uses a highly targeted fertigation method, it can form a round water and fertilizer circle at the root of the crop to ensure that the fertilizer is fully utilized 100%.
3. Save labor.
The precision fertilization irrigation system replaces the manual operation with the system, which greatly reduces the labor intensity, and also reduces the influence of artificial subjective uncertain factors on the growth of the crop during the fertilization process.
4. Promote early maturity of crops.
Precision fertilization and irrigation can basically reduce the temperature of the ground, reduce the humidity of the air in the greenhouse, and promote the early maturity of the crop. Practice has proved that the use of this system can make agricultural products listed two to three weeks in advance.
5. Reduce the occurrence of pests and diseases.
The reduction of indoor air humidity and precise fertigation in the greenhouse destroy the external environmental conditions for the development of pests and diseases, and reduce the use of pesticides due to the reduction of pests and diseases.
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