Greenhouse parameter control strategy based on the AHP(Analytical Hierarchy Process)

This paper is based on the demand of crop growth, providing the optimal reference values (temperature, humidity, light intensity and CO₂ concentration) in the three growing periods of tomato. We set the maximum crop yield as target. Through employing AHP we get the quantitative relationship of the three factors (temperature, humidity, light intensity) with crop yield and that of the three factors with the seven measures (covering or uncovering the hull, switching on or off the heating equipment and spraying equipment etc) respectively. Thus we obtain the quantitative relationship of the seven measures with the crop yield. As a result we can get more scientific and reasonable priority sequence in selecting control measures especially when it comes to the contradict situations of deciding which measure to take.