摘要
为了深入对北方连栋塑料温室综合环境变化规律的了解和认识,提高其生产率和经济效益,本文用相似理论和计算机仿真技术,研究了北方连栋塑料温室内温度、湿度、光照、CO_2和气流速度等主要植物生长发育限制因子的变化特性及其相互的耦合特性。发现北方地区温室植物高效光合遮光调节的幅度最大不宜超过40%,否则会造成人为弱光,但在弱光条件下进行适当补光,其效率是比较高的。如能在通风降温时附以适当的加湿调节处理和CO_2补施,会有效降低呼吸阻力,大幅度提高光合效率和生产率。
In order to improve the productivity and eeonomic henefits, through the better understanding and the more knowledge of the varying patterns of synthetic environment, it is this paper that studies and analyses the variations and coupling properties of the main en- vironment factors such as the temperature, humidity, illumination, C02 and airflow velocity, which influence crops growth in a multi-span greenhouse covered with plastic in the northern part of China, by making use of computer emulation and similar theory. It is fond that the maximum range of san shading is no more then 40% for the high ratio of photosynthesis of the plant in the greenhouse, or it can cause the weak illumination to the crop production, but it has higher benefit for making up the illumination when sunlight is in weak situation. It can also improve the ratio of photosynthesis and productivity by a big margin with making up humidity and CO2 in a reasonable capacity during ventilation.
出处
《上海交通大学学报（农业科学版）》
2008年第5期424-427,共4页
Journal of Shanghai Jiaotong University(Agricultural Science)
基金
国家自然科学基金资助项目(30771241)
关键词
连栋塑料温室
微生态环境
仿真
plastic covered multi-span greenhouse
micro eco-environment
emulation
