What controls the opening and closing of leaf stomata?

Transpiration intensity is not only restricted by the plant's own morphological structure and physiological conditions, but also influenced by external conditions.

Such as root growth, leaf color and shape, mesophyll cell gap size, stomatal opening and closing frequency and opening degree, leaf angle and so on.

The thickness of parenchyma is closely related to transpiration. Atmospheric humidity, temperature, light and wind in meteorological factors are all shadows.

Main environmental factors of transpiration. These factors are often interrelated and mutually restricted, which have a comprehensive impact on transpiration. In addition,

Soil moisture, temperature, ventilation and soil solution concentration will all affect transpiration. On a clear and windless summer day,

If the soil moisture supply is sufficient and the atmosphere is not dry, the general daily variation law of plant transpiration is: after sunrise, stomata

With the increase of opening, transpiration increased, reaching the peak at around 14. Later, due to the reduction of water and light in plants.

When the sun weakens, the stomata gradually close, transpiration decreases, and the sunset quickly drops to the lowest point.