基于经济最优目标的温室环境控制策略

Environmental Regulation Techniques Based on Economic Optimization in Greenhouse

将温室作物整个生长季节分为营养生长阶段和生殖生长阶段。在营养生长阶段,以温度优先为控制策略,即以温度为主控参数,根据温室内加温和降温的幅度等级来选择相应的执行机构,实现温室内作物栽培的环境参数控制要求。在作物生殖生长阶段,综合控制成本模型、温室环境的预测调控模型和作物生长模型,以温室产出与投入比最大为温室环境控制目标进行决策,为温室内作物生长提供经济适宜的环境参数和生长条件。以黄瓜为栽培对象,进行了温室周年生产。实践表明,按经济最优目标的控制策略来实现温室环境控制,既保证了作物正常生长的需要,又兼顾了经济成本。

The whole crop cultivation season was divided into two periods, namely vegetative stage to reproductive stage. In vegetative stage, the temperature was taken as a principal parameter, prior to other parameters in greenhouse. According to the corresponding magnitude rank of temperature rising or cooling, actuating mechanisms were carried out to meet control requirements. In reproductive stage, the control strategies were acted as economic optimized methods. Putting control cost models, predicted environmental parameters control model and the crop growth models in unite system to maximize the greenhouse input/output as control objective. So it could create favorable microclimate parameters and conditions to fit crop growth and development. And the system to cucumber round production was carried out. Practices showed that with the control system based on economic optimization strategies to manage crop growth and development, favorable control effects and lower cost were gained.