A light-temperature coordination optimization method for blueberry greenhouse based on nsga-ii

Abstract

The invention relates to an NSGA-II-based light-temperature coordination optimization method in a blueberry greenhouse, comprising the following steps: 1) dividing the time period for which the blueberry greenhouse needs supplementary light and temperature control to regulate the time period; 2) obtaining the environment five minutes before the unit regulation time period The average value of the factors; 3) Construct the prediction model of greenhouse energy consumption and the prediction model of blueberry net photosynthetic rate; 4) Take the maximum net photosynthetic rate of blueberry crop and the minimum greenhouse energy consumption as the optimization goal within the unit regulation period, establish the greenhouse light and temperature coordination optimization model; 5) The NSGA-II multi-objective genetic algorithm is used to solve the greenhouse light-temperature coordination optimization model; 6) The optimal solution for light-temperature coordination is selected from the non-inferior solution set by the decision-making method based on the optimal benefit improvement. Compared with the prior art, the present invention has the advantages of reasonable division of light-filling and temperature-control periods, improved economic benefits of blueberry greenhouse production, strong versatility and expansibility, etc., provides theoretical guidance and decision support for improving blueberry greenhouse production benefits, and guarantees High yield and energy saving in greenhouse blueberry cultivation.

Description

technical field [0001] The invention relates to the field of optimal control of light and temperature in greenhouses, in particular to a method for coordinated optimization of light and temperature in a blueberry greenhouse based on NSGA-II. Background technique [0002] Blueberry, also known as lingonberry, is a fresh fruit crop rich in anthocyanin, anthocyanin and other nutrients. It has high nutritional value and medical value. It has been rated as one of the top five health by the United Nations Food and Agriculture Organization (FAO). one of the food. In recent years, the blueberry market has continued to expand, and the economic benefits are very considerable. Blueberry is an annual growing crop, and its flower and fruit growth period usually runs from February to July, during which it needs suitable temperature and sufficient light. A number of studies have shown that temperature and photon flux density have a great impact on blueberry photosynthesis, and photosynth...

AI Technical Summary

Problems solved by technology

[0007] The above two methods have certain practicability, but neither of them fully achieve the coordination of light and temperature, and both of them do not consider the cost of greenhouse production, which will easily lead to the fact that the increased energy consumption in greenhouse production is not used to effectively increase the net photosynthetic rate of crops, resulting in Waste of energy, unable to guarantee the economic benefits of greenhouse production

Images