It is better for orchids to have a large temperature difference in summer

When I went to Xinjiang. Bought some cantaloupes. It's so sweet. Stick together after eating secondhand. A good friend asks why it is so sweet. This is rarely the case in the south. The biggest reason for this is the temperature difference. The daytime temperature in Xinjiang is as high as 40 degrees in summer. The temperature is only over 10 degrees at night. Plants carry out photosynthesis during the day. Respiration is performed at night. Keep consuming nutrients at night. It also releases energy to support plant growth and the production of organic matter. The temperature difference is small and consumes a lot of nutrients. resulting in poor growth and development, the Reed head is not full. Flower buds. there are few leaf buds. Weak. the temperature difference is large on the contrary. Better accumulate nutrients. The temperature is high during the day in summer. It's not scary. The key is to lower the ambient temperature of orchid cultivation at night. The best temperature difference is more than 10 degrees.