连栋温室黄瓜生产环境模型中温度特性的分析

Analysis of Temperature Characteristics in Environment Model of Cucumber Production for Plastic Multi-span Greenhouse

为提高塑料连栋温室的环境认识水平及管理技术，以研究塑料连栋温室黄瓜生物学特性为基础，运用能量平衡原理，研究塑料连栋温室黄瓜生产环境数学模型中的变量的变化规律及其取值域。研究表明：在塑料连栋温室黄瓜栽培生产环境的诸多因素中，空气温度为决定性的主因素；且在以天为单位的最小生长周期内，将温度分为4个阶段较为合理，即第一阶段促进光合作用期（18～55℃）；第二阶段促进光合作用期和光合产物运输共生期（15～25℃）；第三阶段促进光合产物运输和抑制呼吸消耗共生期（15～18℃）；第四阶段抑制呼吸消耗和相对休眠期（9～15℃）。

In order to improve the level of awareness of environment and management of technology for the plastic multi-span greenhouse, this paper studied variables in the mathematical model on the environment of cucumber production within taking the plastic covering multi-span greenhouse as a researched subject. And it took the cucumber＇s biological characteristics as the breakthrough point, and used of the principle of energy balance as a researched plant. As the result, it showed that the air temperature is the main decisive factor in the environment factors of cucumber cultivation for the plastic multi-span greenhouse production. And within taking a day as a growth cycle, it is reasonable to divide the temperature phase into four stages, the first stage is the promotion period of photosynthesis needing temperature as for 18-35 ℃; the second stage is the period of promotion photosynthesis and the symbiotic period photosynthetic transport for temperature as 15-25℃; the third stage is the period of promotion photosynthesis product transports with suppresses the breath consumption for 13-18℃; the fourth stage is the period of suppresses the breath consumption and the relative dormant period being as 9-15℃.