Carbon dioxide gas applying method for greenhouse and device

Abstract

The invention discloses a carbon dioxide gas applying method for a greenhouse and a device, and belongs to the technical field of the agriculture planting. The method comprises the following steps: obtaining environmental parameters of the greenhouse and carbon dioxide gas concentration information; according to the obtained environmental parameters of the greenhouse and the carbon dioxide gas concentration information, determining first carbon dioxide supplementary information; according to the first carbon dioxide supplementary information, generating a first controllable valve switch action signal; sending the first controllable valve switch action signal to a controllable valve, wherein the controllable valve controls the discharge of the carbon dioxide in a CO2 storage device, so that the automatic control of the carbon dioxide gas concentration in the greenhouse can be realized. The method is capable of, according to the obtained environmental parameters of the greenhouse and the carbon dioxide gas concentration information, regulating the switch action of the controllable valve in real time, controlling the discharge of the carbon dioxide, and realizing the automatic control of the carbon dioxide gas concentration in the greenhouse. So the crop yield is effectively increased, and the goal of automatic production increase of the greenhouse can be achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a greenhouse carbon dioxide application method and device. Background technique [0002] In the process of agricultural production in the northern region, the temperature changes greatly throughout the year. In order to achieve high yield and high harvest of crops throughout the year, greenhouses are usually used to plant crops with high economic value to achieve multiple harvests throughout the year. At present, greenhouses usually increase production by fertilizing and spraying pesticides in large quantities, which has the disadvantages of large amount of fertilization, poor real-time performance, and poor yield increasing effect. [0003] Carbon dioxide gas is one of the main raw materials for plant photosynthesis and can be used as a gas fertilizer for greenhouse cultivation. At present, the main methods of carbon dioxide application in greenhouses are combusti...

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Problems solved by technology

The combustion method consumes fuel and releases heat and carbon dioxide. This method is firstly not environmentally friendly, secondly, it is not suitable for summer, and thirdly, the cost is high, and the release concentration is uncontrollable, so it is difficult to promote; the fermentation method is low in cost, but has obvious disadvantages. Plants need photosynthesis during the day It can provide a large amount of carbon dioxide at night, but it also continuously releases carbon dioxide at night, which affects the growth of crops, and the concentration of carbon dioxide in the greenhouse is uncontrollable. Often, the growth of crops is greatly affected by the excessive release of carbon dioxide; the cost of chemical methods is high, and the release concentration is uncontrollable. And it will produce waste solids and waste liquids, which is not environmentally friendly

All of these have led to the method of increasing production by using carbon dioxide gas, which has been in the hands of agricultural workers but can only be applied in small-scale experiments.

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