Efficient regulation and control method and system for light environment of hydroponic vegetables based on appropriate root temperature range

Abstract

The invention relates to research for appropriate root temperature range acquisition based on an intelligent control theory and research and development of a multi-factor coupling crop photosynthetic rate efficient regulation and control technology within the range on the basis of analyzing factors influencing the crop photosynthetic rate. According to the invention, a nested experiment is designed to acquire multi-dimensional large-sample data, and a multi-factor coupling hydroponic lettuce photosynthetic rate prediction model based on a regression type support vector machine is built; a root temperature and maximum photosynthetic rate response curve is acquired by using a fish swarm optimization algorithm, and an appropriate root temperature range in the response curve is acquired by integrating a curvature theory; light environment regulation and control target value optimization is performed based on a quantum genetic algorithm in the appropriate root temperature range, an appropriate root temperature range light environment regulation and control target value model is built by taking acquisition of the optimal photosynthetic rate as a target, a lettuce hydroponic root temperature and light environment intelligent regulation and control method based on multi-sensor integration is proposed, and an Internet of things based intelligent regulation and control system is built, thereby laying a foundation for improving the light environment regulation and control efficiency of facilities and promoting rapid development of modern facility horticulture.

Description

technical field [0001] The invention belongs to the technical field of intelligent agriculture, and in particular relates to a method and system for efficiently controlling the light environment of hydroponic vegetables based on an appropriate root temperature range. Background technique [0002] my country's protected vegetable cultivation area accounts for more than 90% of the world's total area, and has become an important part of my country's modern agriculture. Traditional protected cultivation is vulnerable to problems such as soil diseases, excessive application of non-point source pesticides, and unbalanced fertility. In recent years, hydroponics cultivation technology has become a research hotspot due to its environmental protection, pollution-free, balanced nutrition, and good quality. 1 / 5-1 / 3. Photosynthesis is a biochemical process in which crops convert carbon dioxide and water into organic matter under light conditions to achieve material accumulation. It is ...

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Problems solved by technology

However, the above studies are mainly aimed at the traditional protected cultivation mode, and are not based on the characteristics of high efficiency and low cost of root temperature regulation in hydroponic production.

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