论文部分内容阅读
研究了覆盖物揭盖及冬季天气状况与日光温室温度日变化的关系 ,将日光温室冬季温度日变化分为 4个阶段 :即温度快速上升阶段、保持稳定阶段、快速下降阶段及缓慢下降阶段。不同阶段温度转折点分别用Td、To、Tc 和Tf 表示 ,通过调节 4点的温度 ,可最大限度地控制室温处于黄瓜生长最适范围。通过对两年两地大量试验及观测数据的分析 ,建立了日光温室夜间降温随外界最低气温变化的回归方程 ,据此方程可推算出最佳落苫温度。试验结果表明 ,根据日光温室冬季温度日变化规律及黄瓜对生长适温的要求 ,制定出的日光温室温度调节方法 ,对改善冬季黄瓜光合条件、提高产量行之有效。
The relationship between cover weathering and winter diurnal variation in solar greenhouse temperature was studied. The diurnal variation of winter temperature in sunlight greenhouse was divided into four phases: the rapid temperature rising phase, the steady phase, the rapid decreasing phase and the slowly decreasing phase. Td, To, Tc and Tf are the temperature turning points at different stages respectively. By adjusting the temperature at 4 o’clock, the room temperature can be maximally controlled in the optimum range of cucumber growth. By analyzing a large number of experiments and observational data in two years and two years, a regression equation of the nighttime temperature drop with the lowest temperature in the sunlight greenhouse was established, and the optimal temperature was calculated according to the equation. The results showed that according to the daily variation of winter temperature in solar greenhouse and the requirement of cucumber for growth, the temperature regulation method of solar greenhouse was established to improve photosynthetic conditions and increase yield of winter cucumber.