Take good care of bonsai with tree stump in winter

The seasonal tree pile bonsai is maintained in the greenhouse. Due to the high temperature, high humidity, poor ventilation and poor ventilation in the greenhouse, it is easy to cause poor growth and development. In the maintenance process, it should be carried out from the following aspects:

Ventilation should be carried out frequently in the ventilation greenhouse, and the general ventilation time should be carried out at noon on a sunny day, and the size of the vent should be determined according to the growth habits of the tree stump bonsai and the temperature requirements. When the weather is cold, the vent should be small, the ventilation time should be short, on the contrary, the vent should be large, the ventilation time should be long. Through ventilation, the temperature and humidity can be reduced, the occurrence of diseases and insect pests can be prevented, and the indoor effective gas components can be supplemented. The indoor temperature is too high, the evergreen tree stump bonsai enters the second growth peak, the branch growth is weak, the resistance is poor.

See the lighting surface of the greenhouse should be made of glass material, this kind of greenhouse has good performance and high transparency, but its disadvantage is that it hinders the entry of ultraviolet rays. Ultraviolet radiation can hinder the growth of bonsai stump, limit its growth height, and can be sterilized. Bonsai tree stump does not have enough ultraviolet radiation. Evergreen bonsai branches should grow, soften and destroy its shape. Therefore, the glass window should be opened to make it exposed to the sun and make the branches strong. Window opening time should be in sunny days when high temperature, generally open the window 2-3 hours a day, for deciduous tree stump bonsai, can prevent the occurrence of diseases and insect pests.

Watering should be carried out at noon, when the soil temperature is close to the water temperature, which is beneficial to root absorption. In addition, a large amount of ineffective water can evaporate away, reduce the difficulty of root breathing caused by over-wet soil, prevent rot, benefit the water cycle in the plant and increase its resistance. For the deciduous tree stump bonsai in the dormant period, it is appropriate to see dry and wet.

When fertilization is in the growing period in winter, the bonsai stump should be mainly fertilized with phosphorus and potassium fertilizer, supplemented by nitrogen fertilizer. Fertilization is mainly the application of liquid fertilizer. The principle of fertilization is that it is watered in sunny days, not in cloudy days, at noon, and not in the morning and evening. Deciduous tree stump bonsai is in dormant period, so fertilizer should be stopped.

Change the soil part of the dormant tree stump bonsai (rhododendron, sparrow plum, Acacia, etc.) after hibernation, there is a dead branch phenomenon, you can choose to change the basin, change soil, prune while the bonsai is still dormant in winter, and use stimulating methods to break dormancy to make these stump bonsai sprout.

Comprehensive prevention and control measures should be taken to prevent diseases and insect pests, materials with diseases and insect pests are strictly prohibited from entering the greenhouse, and greenhouse drug disinfection is done regularly. All greenhouse environments, including basin soil, culture soil, fertilizers, doors and windows, ground and various tools, are thoroughly sterilized and disinfected. Agricultural Technology Station of Wenchen Township, Diping County