Traditional Culture Encyclopedia - Weather inquiry - Why do tulips bloom during the day and close at night?

Why do tulips bloom during the day and close at night?

The phenomenon that flowers bloom during the day and close at night is the sleep movement of plants. This movement is caused by temperature change, and it is closed at night when the temperature is low. If the closed flowers are moved to a warm place, they will reopen in 3-5 minutes. The other is caused by the change of light intensity, such as flowers opening in strong light and closing in weak light.

Tulips like strong light, and light is a necessary condition for their flowering. Plants should be guaranteed to receive no less than 8 hours of direct sunlight every day. This helps tulips to accumulate more photosynthetic products, which not only ensures the good growth of plants, but also ensures the normal opening of flowers.

Tulips like sunny or semi-cloudy environments, which are mild and humid in winter and cool and slightly dry in summer. Sandy loam with rich humus and good drainage should be selected, and low humidity and cohesive soil should be avoided. Strong cold tolerance, bulbs can withstand the low temperature of MINUS 35 degrees Celsius in winter. The optimum temperature for growth is 15 ~ 18℃, and the optimum temperature for flower bud differentiation is 17 ~ 20℃. Roots can't regenerate after being damaged. The mother bulb blooms, giving birth to new bulbs and daughter bulbs, and then gradually dries up and dies. Usually, each cue ball can be divided into 1 ~ 3.5 new balls. Perennial herbaceous flowers.