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| 1 | Advances in greenhouse automation and controlled environment agriculture:A transition to plant factories and urban agriculture显示文摘Greenhouse cultivation has evolved from simple covered rows of open-fields crops to highly sophisticated controlled environment agriculture(CEA)facilities that projected the image of plant factories for urban agriculture.The advances and improvements in CEA have promoted the scientific solutions for the efficient production of plants in populated cities and multi-story buildings.Successful deployment of CEA for urban agriculture requires many components and subsystems,as well as the understanding of the external influencing factors that should be systematically considered and integrated.This review is an attempt to highlight some of the most recent advances in greenhouse technology and CEA in order to raise the awareness for technology transfer and adaptation,which is necessary for a successful transition to urban agriculture.This study reviewed several aspects of a high-tech CEA system including improvements in the frame and covering materials,environment perception and data sharing,and advanced microclimate control and energy optimization models.This research highlighted urban agriculture and its derivatives,including vertical farming,rooftop greenhouses and plant factories which are the extensions of CEA and have emerged as a response to the growing population,environmental degradation,and urbanization that are threatening food security.Finally,several opportunities and challenges have been identified in implementing the integrated CEA and vertical farming for urban agriculture. | Redmond Ramin Shamshiri Fatemeh Kalantari K.C.Ting Kelly R.Thorp Ibrahim A.Hameed Cornelia Weltzien Desa Ahmad Zahra Mojgan Shad | 2018 | International Journal of Agricultural and Biological Engineering2018，11，1： | 14 |
| 2 | Progress,problems and prospects for standardization of greenhouse-related technologies显示文摘In recent years,the scale of greenhouse grows rapidly and steadily in China,which promotes the development of greenhouse technology and the demand for standardized technology.However,the standardization process of greenhouse industry in China has been facing with the problem of unbalanced development with the practical standard system for many years.To solve these problems,the most characteristic greenhouse designs used in China contributing to this work are presented in detail.And the development of standard system and the standardization efforts of them are summarized and analyzed in relationship to the data presented in this paper.In this way the origin of greenhouse standard system in China and context of the system development and standardization of greenhouse structure are clarified.It was also found that the development and iterative update of greenhouse standard system are under the influences of enterprises which as the participation of standard constitutors were proved to play an important role in promoting the standardization development of greenhouse.The outcome of this work may be utilized to perfect the greenhouse standardization system and improve the greenhouse standardization efficiency that dominate the facility agriculture in China. | Yanzhao Ren Minjuan Wang Iftikhar Ahmed Saeeda Xuerui Chen Wanlin Gao | 2018 | International Journal of Agricultural and Biological Engineering2018，11，1： | 4 |
| 3 | Development and test verification of air temperature model for Chinese solar and Spainish Almeria-type greenhouses显示文摘Growth can be defined as an increment in biomass or an increment in weight or height of the organs of the plant influenced by physiological processes.Many of these processes have their limits genetically determined,but climate and irrigation play an important role.Because of its importance,microclimate has been extensively studied in the modeling as a surrounding condition which is imposed by the exterior climate.The main objective of this work was to develop a temperature model based on the energy balance dynamics at two different greenhouse locations-South-eastern Spain and Northern China,and the traditional structures of Chinese solar greenhouse and Almería-type multi-span greenhouse were taken into account.The final model was developed by combining the external conditions,the actuator influence and the crop growth,where the temperature is influenced by soil,crop,cover,actuators,back wall and greenhouse geometry.The model took into account the energy lost by convective and conductive fluxes,as well as the energy supplied by solar radiation and heating systems.The soil and the back wall are the main media for energy storage.The temperature dynamic was determined by a physical model,which considered the energy balance from a holistic point of view-as a sub-model for a customizable interface among the external climate,the plant and the greenhouse system.The influences of different subsystems included in the temperature model were analyzed and evaluated.The results showed a high R^(2)value of 0.94 for Beijing and 0.95 for Almeria,and the average error was low,of which the MAE and RMSE were 0.71 and 1.365 for Almeria and 0.62 and 1.102 for Beijing,respectively.Thus,the model can be considered as a powerful tool for control design purposes in microclimate systems. | Jorge Antonio Sanchez-Molina Li Ming Francisco Rodriguez Jose Luis Guzman Wang Hui Yang Xinting | 2017 | International Journal of Agricultural and Biological Engineering2017，10，4： | 2 |
| 4 | 设施农业可再生能源综合供能系统运行策略显示文摘针对当前温室生产中传统能源系统能源利用率低、环境污染严重、运行费用高等问题,该研究设计了一种耦合太阳能与空气能利用的可再生能源系统,考虑设备季节性利用制定了4种不同的运行策略,并在典型日与全年两种维度上与传统系统进行了热力、环境、经济方面的对比分析。结果表明,典型日内系统一次能源节约率、二氧化碳减排率、运行费用节约率分别为24.67%、23.22%、17.04%。全年维度内策略1、2、3、4对应的一次能源节约率分别为60.23%、70.43%、70.53%、63.69%,二氧化碳减排率分别为222.90%、266.35%、269.56%、223.00%,运行费用节约率分别为227.12%、272.38%、302.56%、239.81%,投资回收期分别为2.51、2.35、2.21、2.09 a。该研究揭示了系统全年、典型日运行中的能量特性,证明了可再生能源系统在农业方面应用的可行性、优越性,与此同时也发现空气源热泵的运行时间长短及时刻差异是影响系统综合性能的重要因素,为面向温室的可再生能源系统的发展提供思路与参考。 | 张东 姜钰湛 李浩然 张瑞 安周建 赵伟国 | 2023 | 农业工程学报2023，39，24： | 0 |
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