Low temperature is the major environmental factor that limits the optimal field production of tomato in the high altitude mountain regions. Studies were conducted to determine the feasibility of growing tomato, a temperature sensitive crop, in a naturally ventilated passive solar greenhouse with high temperature amplitude (24.7 ± 3.0 °C). The study also aimed to determine the application of shade net combined with low-cost greenhouse technology. Despite the temperature fluctuation from 6.6 ± 2.1 °C at night to 39.1 ± 4.7 °C day temperature, flowering and fruiting were observed under the greenhouse conditions. The marketable yield inside the greenhouse was 1.8-times higher compared to open-field. Shading significantly affected the photosynthesis and results in increased sub-stomatal CO₂ concentration. Shading resulted in delayed flowering and 48% reduction in marketable yield. Total phenolic contents (TPC) of tomato grown under open-field and greenhouse conditions were similar. However, greenhouse conditions resulted in a 35% decrease in total flavonoid contents (TFC) of tomato fruit. Shading reduced the TPC and TFC by 29 and 16%, respectively under greenhouse conditions.

低温是制约高海拔山区番茄最佳大田生产的主要环境因素。进行了研究以确定在具有高温振幅 (24.7 ± 3.0 °C) 的自然通风被动日光温室中种植温度敏感作物番茄的可行性。该研究还旨在确定遮阳网与低成本温室技术相结合的应用。尽管温度从夜间的 6.6 ± 2.1 °C 到白天的 39.1 ± 4.7 °C 波动，但在温室条件下观察到开花和结果。温室内的可销售产量是露地的 1.8 倍。遮荫显着影响光合作用并导致亚气孔CO _2增加专注。遮荫导致开花延迟和可销售产量减少 48%。在露天和温室条件下生长的番茄的总酚含量 (TPC) 相似。然而，温室条件导致番茄果实的总黄酮含量 (TFC) 降低了 35%。在温室条件下，阴影分别使 TPC 和 TFC 降低了 29% 和 16%。