What are the special requirements for temperature and light in Magnolia?

① temperature for temperature and light requirements of Magnolia. The suitable temperature for the growth of Cymbidium is 1525 ℃. In the suitable temperature range, the temperature is high, the growth is fast; when the temperature is low, the growth is slow. If the temperature is more than 30 ℃, the leaves are thin and slender, the veins are not clear, the flowering time is short, and the flower color is light but not bright. If the temperature is below 5 ℃, the growth stops and the lowest critical temperature is 0 ℃. If at-10-20 ℃, the leaves will turn yellow. The temperature required for different growth stages is different: the temperature in sowing stage reaches 25 ℃, the emergence rate is fast and the emergence rate is high; 15-18 ℃ in seedling stage is favorable for squatting seedlings; the temperature in arrow stage should be higher; the flowering period is about 15 ℃, which can prolong the flowering period. The experiment shows that the temperature difference between day and night is 7: 10 ℃.

② illumination. Cymbidium is a semi-negative plant, not without light, not even strong light. The light in early spring, late autumn and winter is very important for the orchid to blossom and bear fruit. In order to arrange the leaves neatly, we should pay attention to the direction of light. Try to make the stretching direction of the leaves parallel to the direction of light, and change the position of the flowerpot every other week, turning the flowerpot 180 degrees, so that the arrangement of the leaves will be neat and beautiful, increasing the ornamental effect.