The nutrient solution is prepared according to the types and proportions of the essential mineral elements of the plants, and the plants are cultivated through the nutrient solution circulation system to make the facility farmers no longer dependent on the soil, instead of traditional fertilization and irrigation agronomic methods, and adopt soilless cultivation methods such as substrates or hydroponics. Modern integrated factory management of water and fertilizer. Large-scale agricultural facilities, intelligent management and control of the facility environment, and modern soilless cultivation technology are the basic technical and equipment foundations that support modern facility farmers, and are currently necessary equipment or upgrade areas for facility farmers in my country.
After years of exploration, the law of changes in environmental elements of plastic greenhouses and solar greenhouses in my country has become relatively clear, environmental control technology and equipment have become increasingly complete, and some products have been put on the market. However, in addition to the multi-span greenhouse, due to the lack of profitability, the application of environmental factor control equipment for plastic greenhouses and solar greenhouses has always been blank. The solar greenhouse itself still relies on the passive daylighting and heat preservation performance of the solar greenhouse to maintain production capacity, with less human intervention. In addition, the cultivation technology in the greenhouse lacks quantitative indicators. It can only passively keep warm, cool, shade and prevent rain, but cannot actively adjust temperature, light, water, fertilizer, gas and other elements, which greatly limits the high yield of protected crops. The main obstacle to high-quality cultivation. The facility has poor environmental control capabilities. There are many obstacles such as low temperature, low light, low carbon dioxide concentration, low light, high temperature, high humidity, and strong light. The compound hazards are serious, and annual production has not been realized.
To
At present, most of the water and fertilizer supply in plastic greenhouses and solar greenhouses are not equipped with integrated water and fertilizer equipment. Manual over-application and over-irrigation are common. In addition, the cultivation techniques are mostly soil ridges and mulching cultivation methods, groundwater pollution problems, secondary salinization problems The problem of continuous cropping obstacles is very serious, and the development of soilless cultivation and industrialization of facility gardening is the only way. Fertilizer and water use efficiency is low, and soil quality problems deteriorate seriously. Soilless cultivation and factory development of facility horticulture is the only way.
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