Encyclopedia of LED lighting and plant plants and key technical points

The application of LED is divided into visual and non visual, visual application class LED lighting technology, non visual classification of plants which with health care, photosynthesis, LED plant photosynthesis application (called plant artificial radiation source PARS) will become the largest application market of LED technology and LED lighting this paper describes the overall concept of technology, and key technology of the plant factory, demonstrates the development of cutting-edge fusion plant factory, showing the plant factory as the application of modern agricultural science and technology innovation, the concept of plant factory fundamentally change agricultural planting, plant factory marks the advanced stage of the development of agriculture, is a new industry with investment the value of the. In the city to establish the production of vegetables for the purpose of the plant factory has become a new area of development.

Summary

PF (Plant Factory) plant factory is a product of agricultural industrialization, is the development direction of vegetable planting in twenty-first Century, which marks the advanced stage of the development of agricultural facilities, is a new industry in the future 10 years most of the value of the investment. In the city to establish the production of vegetables for the purpose of the plant factory has become a new area of development.

Plant factory the main feature is to break the traditional mode of vegetable production, efficient planting artificial control based on plant photosynthesis, temperature, carbon dioxide concentration, nutrient solution, to achieve the order of production, the production cycle will not change because of the weather reasons such as vegetables and vegetable production, vegetable safety is real, hydroponics (no soil cultivation) is the main means of plant plant layer type structure is the main form, with LED based plant artificial radiation source (PARS) used to further reduce the cost, the plant factory will usher in the golden period of development.

The main reason for the plant plant to become a hot investment:

1) planting the deterioration of the environment, food safety, medical care and other safety requirements of vegetables increased.

2) the uncertainty of global climate change is increasing, and the reduction of water resources and the desertification of land make the traditional agriculture difficult.

3) the process of urbanization has brought about an increase in urban population, an increase in the supply of vegetables, and the reduction of land resources.

4) the environmental burden caused by traditional agricultural production is increasing.

5) the logistics cost of urban vegetable supply increases, and the price of urban vegetables increases.

6, in order to pursue the production and use of pesticides and insect pests in vegetable cultivation, vegetable pollution concerns increased.

7) the heavy metal pollution of the land and the industrial pollution problems of the irrigation water.

8) solar energy and wind energy, such as the scale of the application of clean energy continues to expand.

9) application of LED technology costs decline, multi band light application.

Plant definition

The definition of plant plant plant plant is an artificial environment, the production of a fixed cycle of mass production, the realization of the cycle of production orders, and provide stable pollution-free vegetable production environment. In this environment, the photosynthesis of plants (light, light, light cycle), temperature, humidity and carbon dioxide concentration, medium composition and production process can be effectively controlled with computer and sensor, is based on science, new agricultural production base and independent of experience and intuition.

Advantages of plant plants:

1) the product is in accordance with the order of production, production cycle and output can be stable.

2, using artificial radiation source and temperature control system, not affected by regional climate conditions.

3 closed three-dimensional planting, saving land resources and pollution prevention.

4. The production cycle is short, the annual output is high, and the annual output is 4 to 8 times of the outdoor planting.

5) can be truly safe and pollution-free vegetables.

6) production personnel in accordance with the standard production process, without professional skills.

7) the factory is located in the shopping area or industrial park in the city to reduce the cost of supply logistics.

Plant classification:

1. According to photosynthesis, there are two types: complete artificial radiation and solar and artificial radiation.

2 according to the planting structure is divided into flat planting and three-dimensional planting.

3) according to the planting mode is divided into soil, water fog, tillage.

4) in accordance with the size of the plant is divided into small plants (less than 800 square meters), large plant plants (more than 1000 square meters).

Most of the plant factory is used in hydroponics stereo planting.

Plant and artificial light

Technical development of plant factory with artificial light sources close contact with the concept of plant plant is developed based on artificial light on the earliest use of artificial light for planting in greenhouse, the theory is based on the research results of plant photosynthesis, in the visible range of sunlight (within the wavelength range: 380nm-735nm) the physical principle of sun light and artificial light source is the same, only two different spectral shapes, artificial light can completely replace the sun light to realize the indoor cultivation of plants. The incandescent lamp, HID fluorescent lamp, artificial light has been widely used in greenhouse cultivation, different artificial light in plants is different on the utilization efficiency of energy, improve energy efficiency directly leads to a decline in the cost of planting, however, these early artificial light in plant photosynthesis