The potted Fusarium likes the loose, fertile and well drained micro acid soil, but the temperature is low in winter, and the demand for fertilizer is correspondingly reduced, so the fertilization should be controlled from October. A thin layer of dry fertilizer can be sprinkled on the surface of basin soil, such as coarse cake powder, sauce residue powder, etc. It is necessary to reduce the application of nitrogen fertilizer, avoid the excessive growth of branches and leaves, and then affect the physiological dormancy. If the leaves turn yellow, the application concentration is 0. 3% ferrous sulfate solution to improve the physical and chemical properties of soil.
During the winter in Fusang, the basin soil should be dry rather than wet, so water should be controlled to keep the basin soil slightly wet. Generally, water once every 5-10 days, and the amount of water should not be too much, so as to avoid root rot caused by low temperature and high humidity soil environment. In the north of China, the climate is dry in winter, and the leaves are often yellowish and dry, so we should pay attention to improve the indoor air humidity. The air humidity around the plant can be increased by spraying and washing branches and leaves or covering with plastic film to create suitable humidity conditions for its growth.
The suitable dormancy temperature of Fusarium in winter is 5 ℃ ~ 15 ℃. If the room temperature is higher than 15 ℃, the plant will not be fully dormant, which will affect the next year's flowering; if the room temperature is lower than 5 ℃, it will be vulnerable to freezing damage. In addition, pay attention to the water temperature when watering. The difference between the water temperature and the air temperature is too large (more than 5 ℃) which is easy to damage the root system. Therefore, it is better to dry the water for flowers for one day first, and then use it when the water temperature is close to the indoor temperature.
Pruning can adjust the tree shape, form a reasonable tree structure, control the unnecessary nutrition growth, and promote the tissue enrichment, so Fusang should be cut at least once half a month after entering the room to the next spring before leaving the room. Generally, about 10 cm of branches should be left, and the rest of the branches should be cut short. After germination, two more branches should be left on each branch, and the rest of the branches should be cut off.
For the older plants, they can be very heavy and short cut, that is to say, only 2-3 buds are kept at the base of each lateral branch, and the upper part is cut off completely. When pruning, we should pay attention to the internal and external orientation of buds, so as to control the growth direction of branches in the future.
After Fusang entered the room in winter, if the indoor ventilation is poor and the light is insufficient, it is easy to suffer from aphids and scale insects, we should pay attention to improving the ventilation and light transmission conditions of the indoor environment, and combine with drug control. When a small amount of scale insects are found on the plant, they can be removed with a brush.
