System and method for regulating and controlling comprehensive environment for crop canopy space

Abstract

The invention discloses a system and method for regulating and controlling comprehensive environment for a crop canopy space, and belongs to the field of environmental factor regulation and control offacility agricultural engineering. The system for regulating and controlling comprehensive environment for the crop canopy space is suitable for being used under a crop cultivation line and is basedon the ground submerged pipeline air supply. The system for regulating and controlling comprehensive environment for the crop canopy space comprises a main air pipe, a branch air pipe, a system air supply fan, a branch air pipe auxiliary booster fan, a heating electric heat source, a carbon dioxide gas source and a channel switching valve; according to the detection data of an environmental factordetection and a regulation module, the operations of the main air pipe, the branch air pipe, the system air supply fan, the branch air pipe auxiliary booster fan, the heating electric heat source, the carbon dioxide gas source and the channel switching valve are controlled; the environment of active airflow, temperature, humidity, gas and the like of greenhouse facilities is regulated and controlled. The method achieves the local spatial regulation and control target of the crop canopy, and has the advantages of strong pertinence, high regulation and control efficiency, low energy consumptionand good economy.

Description

technical field [0001] The invention belongs to the field of environmental factor regulation and control of protected agricultural engineering, and in particular relates to a comprehensive environmental regulation system and regulation method for crop canopy space. Specifically, it is suitable for the active airflow control of small and medium-sized greenhouse facilities such as solar greenhouses, especially for the environmental control of airflow, temperature, humidity, gas, etc. in a specific space of the crop canopy. Background technique [0002] The rapid development of my country's social economy urgently requires agricultural modernization, industrialization, scale and industrialization, which requires agricultural products to be produced in an environment with a high degree of intensification and controllable environmental variables. At present, the use of facilities such as solar greenhouses and plastic greenhouses for crop cultivation is a very important form of fa...

AI Technical Summary

Problems solved by technology

During the day, with the increase of outdoor solar radiation, the photosynthesis of crops is enhanced, which will absorb a large amount of carbon dioxide, resulting in a decrease in the carbon dioxide content in the greenhouse; under closed cultivation conditions, if the carbon dioxide is not replenished in time, when the carbon dioxide concentration is low to a certain level , it will in turn inhibit crop photosynthesis and affect production

In the current solar greenhouse, natural ventilation, hanging carbon dioxide gas fertilizer bags, and straw reactors are usually used to replenish, but the amount of replenishment is limited, or the replenishment method is uncontrollable and other factors, which cannot adapt to the growth of crops. need

[0005] In addition, in winter production, in order to meet the needs of heat preservation, productive greenhouses such as solar greenhouses are mostly in an airtight state, which not only cannot guarantee the airflow and carbon dioxide environment, but also often causes low temperature and high humidity, which easily leads to disease occurrence

At present, the commonly used solution is ventilation, but the effect is not ideal, because in order to reduce heat loss and maintain the indoor temperature, the ventilation time is often limited, and the uneven setting of the vents makes it difficult to ensure the uniformity of the indoor environment.

[0006] To sum up, the current environmental regulation lacks attention to airflow regulation, effective regulation of temperature and humidity, and precise regulation of carbon dioxide concentration.

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