Authors

Abstract

As an important facility structure in China, the solar greenhouse can provide a suitable environment for plant growth and development during winter, making it a viable structure for cultivating landscape flowers in cold regions. However, the impact of crop spacing in solar greenhouses on the thermal environment had received scant attention from researchers. Therefore, computational fluid dynamics (CFD) software was used to simulate the effect of crops on the thermal environment in solar greenhouses. The results of this study show that: the presence of crops in the greenhouse has a greater influence on the temperature in the solar greenhouse along the horizontal, vertical and longitudinal directions within the ranges of (3000, 8000 mm), (300 mm, at the film) and the distance from the inner surface of the east and west walls within the range of 10,000 mm; the presence of crops in the greenhouse has a greater influence on the internal temperature of the east wall, the west wall and the north wall; The influence of different planting densities of crops in the greenhouse on the internal temperatures of the solar greenhouse in the horizontal, vertical and longitudinal directions was within the ranges of (1000 mm, at the film), (600 mm, at the film), and the distance from the inner surface of the east and west walls was within the range of 6000 mm, respectively. This study can provide a theoretical basis for the cultivation and management of flowers in solar greenhouses in cold regions.

Abstract in Chinese

日光温室作为中国重要的设施结构，在冬季可提供植物生长发育的适宜环境，因此可作为寒冷地区种植景观花卉的设施结构。但是针对日光温室内花卉景观种植密度对温室湿热环境的影响较少，因此本文以CFD作为模拟手段，通过设置不同密度的种植方式，探究景观不同种植密度对温室湿热环境的影响。本研究结果显示：温室内有无作物对日光温室内温度沿横向、竖向和纵向的影响范围分别为（3000,8000）mm、（300mm，棚膜处）和距离东西墙体内表面距离为10000mm范围内；温室内有无作物对东墙、西墙和北墙内部温度影响较大；温室内作物不同种植密度对日光温室内温度沿横向、竖向和纵向的影响范围分别为（棚膜处,1000）mm、（600mm，棚膜处）和距离东西墙体内表面距离为6000mm范围内。该研究可为寒冷地区日光温室花卉种植和管理提供理论依据。