Optimization of rhizosphere cooling airflow for microclimate regulation and its effects on lettuce growth in plant factory

作     者：LI Kun FANG Hui ZOU Zhi-rong CHENG Rui-feng LI Kun;FANG Hui;ZOU Zhi-rong;CHENG Rui-feng

作者机构：College of HorticultureNorthwest A&F University/Key Laboratory of Protected Horticultural Engineering in NorthwestMinistry of Agriculture and Rural Affairs of ChinaYangling 712100P.R.China Institute of Environment and Sustainable Development in AgricultureChinese Academy of Agricultural Science/Key Laboratory of Energy Conservation and Waste Management of Agricultural StructuresMinistry of Agriculture and Rural Affairs of ChinaBeijing 100081P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2021年第20卷第10期

页      面：2680-2695页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：This work was supported by the National Natural Science Foundation of China(31701969) the Key Projects of Ningxia Key R&D Program Fund,China(2018BBF02012) the Science and Technology Program of Shaanxi Province,China(2017ZDXM-NY-057) 

主　　题：air movement environmental control microclimate water cooling root and shoot growth 

摘      要：In plant factories,the plant microclimate is affected by the control system,plant physiological activities and aerodynamic characteristics of leaves,which often leads to poor ventilation uniformity,suboptimal environmental conditions and inefficient air *** this study,interlayer cool airflow(ILCA)was used to introduce room air into plants’internal canopy through vent holes in cultivation boards and air layer between cultivation boards and nutrient solution surface(interlayer).By using optimal operating parameters at a room temperature of 28℃,the ILCA system achieved similar cooling effects in the absence of a conventional air conditioning system and achieved an energy saving of 50.8% while bringing about positive microclimate change in the interlayer and nutrient *** resulted in significantly reduced root growth by 41.7% without a negative influence on lettuce crop *** development in this precise microclimate control method is predicted to replace the conventional cooling(air conditioning)systems for crop production in plant factories.