1、 Improper illumination

Reason: Zhaocai tree is suitable to grow under soft astigmatism. When there is no light for a long time, the leaves will fall down due to lack of light. If the light is too strong, it is also unfavorable to growth. It is easy to burn the leaves and cause the leaves to turn yellow and fall

When there is a lack of sunlight, the method can be adjusted according to the actual situation. If the sunlight is too strong in summer, appropriate shading measures can be taken to block the light

2、 Improper watering

Reason: Zhaocai tree should be kept moist during the growth period, but if the amount of watering is too large, it will cause ponding, leading to rotten roots and leaf loss

Solution: if it is due to excessive watering, it is necessary to stop watering first, then dig out the plants, cut off the rotten parts, disinfect and plant again

3、 Improper fertilization

Reason: long-term non fertilization and no nutrient supply will cause fallen leaves, and excessive fertilization will also cause leaf loss

Solution: replace the fertile and loose soil and apply fertilizer reasonably to ensure good nutrients. If there is too much fertilizer, it should be watered and diluted

4、 Infectious diseases and insect pests

Reason: in the process of maintenance, it may be infected with diseases and pests. After it appears, it will absorb juice and cause leaves to fall

Solution: remove the diseased leaves in time after the onset of the disease, ensure good ventilation, and spray drugs in time. Dimethoate emulsion can be used