Greenhouse CO2 gas fertilizer increasing method, device and system

Abstract

The invention relates to a greenhouse CO2 gas fertilizer increasing method, device and system. The method comprises the following steps that: environment information and the photosynthetic rate value of crops in a greenhouse are acquired; with the environmental information and the photosynthetic rate value respectively adopted as an input variable and an output variable, an SVM-based photosynthetic rate prediction model can be established; a relation curve graph between CO2 concentration and photosynthetic rate under the interaction effect of various environmental factors can be obtained through analysis; a CO2 concentration saturation point corresponding to a maximum photosynthetic rate value under combined conditions of specific environmental factor variables is obtained from the relation curve graph; a CO2 increase adjustment and control model is established; and CO2 supply quantity is calculated, and CO2 is increased in the greenhouse under control. The device comprises a data acquisition unit, a photosynthetic rate prediction model establishment unit, an analysis and processing unit, a CO2 increase calculation unit and an execution control unit. With the CO2 gas fertilizer increasing method, device and system of the invention adopted, optimal CO2 supply quantity can be calculated fast and accurately, and fine adjustment and control of CO2 gas fertilizer increase can be realized, and the photosynthetic efficiency and yield of the crops can be improved.

Description

technical field [0001] The invention relates to the technical field of facility agriculture environment control, in particular to a greenhouse CO 2 Gas fertilizer application method, device and system. Background technique [0002] Solar greenhouses are widely used in agricultural production because of their airtight and controllable environmental conditions, and are typical representatives of facility agriculture. Long-term monitoring of environmental information in the greenhouse can reasonably guide and manage the input of resources required for crop growth, and effectively improve crop yield and quality. A wireless sensor network (WSN) is a distributed sensor network whose ends are sensors that can sense and check external information. WSN is composed of a large number of wireless sensor network nodes and gateway nodes distributed in the monitoring area, which can facilitate the automatic acquisition of environmental information in the solar greenhouse. At present, WS...

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Problems solved by technology

[0004] The invention provides a greenhouse CO 2 Gas fertilizer application method, device and system to solve the problem of using a single environmental factor as CO in the prior art 2 The basis for increasing the application of gas fertilizer, ignoring the interactive effects of other environmental factors on the photosynthetic rate, resulting in the inability to achieve CO 2 The problem of fine regulation of air fertilizer application

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