山西曲沃3种类型日光温室热环境现状测试与分析

来源 :中国农业大学学报 | 被引量 : 0次 | 上传用户:
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
采用试验方法,对山西曲沃广泛使用的3种类型温室的温度和湿度进行测试,并对测试结果进行分析。结果表明:3种类型温室的日平均气温均维持在13℃以上,且存在高湿不利因素。1月份,四代温室的日平均温度为14.7℃,分别高于五代温室、二代温室0.5和1.1℃;四代温室每日满足作物生长的平均时长为19.9h,较五代温室和二代温室长0.7和4.0h;四代温室夜间平均气温均值为12.2℃,较五代温室和二代温室分别提高9%和18%;四代温室和五代温室的室内外温差平均值分别为19.8和20.0℃,高于二代温室0.7和0.9℃,3种类型温室保温蓄热性能均有较大的提高空间;3种温室的温度环境及保温性能为:四代温室>五代温室>二代温室。3种温室夜间的相对湿度均达到饱和,白天相对湿度平均值为:五代温室88%、四代温室79%、二代温室79%。综合温湿度情况,四代温室较五代温室更适合于山西曲沃地区推广。针对温室保温蓄热性较差、室内高湿情况,可通过加厚草苫或使用保温性能较好的保温被,改变温室的灌溉方式,加强通风等方法,改善日光温室的湿热环境,使其达到作物生长所需的最佳条件。 The test method was used to test the temperature and humidity of three types of greenhouses widely used in Quwo, Shanxi Province, and the test results were analyzed. The results showed that the average daily temperature of three types of greenhouses maintained at above 13 ℃, and there were unfavorable factors of high humidity. In January, the fourth-generation greenhouses had an average daily temperature of 14.7 ℃, which was higher than the fifth-generation greenhouses and the second-generation greenhouses by 0.5 and 1.1 ℃ respectively. The fourth-generation greenhouses met the average daily crop growth of 19.9 hours, 0.7 and 4.0 hours respectively. The mean nighttime mean temperature of the fourth generation greenhouse was 12.2 ℃, which was 9% and 18% higher than that of the fifth and fifth generation greenhouse respectively. The average indoor temperature difference between the fourth and fifth generation greenhouse was 19.8 and 20.0 ℃ , Higher than the second generation greenhouse 0.7 and 0.9 ℃, three kinds of greenhouse thermal insulation properties have greater room for improvement; three kinds of greenhouse temperature environment and thermal insulation properties: four generations of greenhouse> Five generations of greenhouse> Second generation of greenhouse. The relative humidity of the three kinds of greenhouses reached saturation at night, and the average relative humidity in daytime was 88% in Five Generation Greenhouses, 79% in Four Generation Greenhouses and 79% in Second Generation Greenhouses. Integrated temperature and humidity conditions, Greenhouse four generations of greenhouse is more suitable for promotion of Shanxi Quwo area. Aiming at the poor thermal insulation in the greenhouse and the indoor high humidity, we can improve the hot and humid environment of the greenhouse by changing the greenhouse irrigation and strengthening the ventilation by thickening the grass or using the insulation with good insulation performance. To achieve the best conditions for crop growth.
其他文献
“要想播撒阳光到别人心里,你自己心里必须要先有阳光.”从事班主任工作,时刻谨记这一点.作为一名小学班主任,与学生接触最密切,是学生健康成长的引路人.
本文通过对荣华二采区10
期刊
期刊
新课改提出以来,素质全面发展的教育要求就成为教育的改革重点,传统教学的禁锢学生思想的教学方法已经受到了极大的挑战,新时代的教育必须要充分发挥人本思想,以学生的想法和
期刊
数学与人类生活息息相关,紧密联系,促进了人类社会的进步和发展。小学数学教学是小学生数学学习的启蒙教育,学好小学数学也是小学生今后学习初高中物理化的基础前提。自主探究学
期刊
期刊
王军轩担起沈阳市铁西区书协副主席、秘书长一职是件难事,这是个纯粹的民间协会,靠着一群对书法有着无限热爱之情的人,慢慢做出了一些成绩。我在担起这副担子的同时,正面临着
A simple and efficient local optimization-based procedure for node repositioning/smoothing of three-dimensional tetrahedral meshes is presented. The initial tet
期刊