Key points of cultivation of Poplar Bonsai

The cultivation of boxwood is not difficult, and many flower friends like to make boxwood into bonsai and plant it at home, which can not only beautify the environment, but also purify the air. So how should boxwood bonsai be cultivated? What problems do you need to pay attention to?

Yellow poplar

First, watering

Huang Yang likes to be moist, and bonsai needs to be watered frequently to keep the basin soil moist, but not stagnant water. During the high temperature in summer, water should be watered and foliar water should be sprayed in the morning and evening.

II. Fertilization

During the growing period from May to August, you can apply 2-3 fertilizer and water of thin cake, apply base fertilizer once in winter, and use manure or crumbs of dry cake.

3. Pruning

Cut off overgrown branches, overlapping branches and extra branches that affect the shape of the tree at any time during the growing period. Huang Yangmeng

Hair faster, generally in the hair after the new tip, the first 1-2 section cut off, can prevent overgrowth. After fruiting, boxwood should be picked in time so as not to consume nutrients and affect the growth of trees.

IV. Turning the basin

It is usually carried out once every 2-3 years, and it is better to do it before germination in spring. Combined with turning the basin to cut off part of the old roots and over-long and dense roots, replace the old soil and plug it with fertile and loose culture soil to facilitate the root system development.

Prevention and control of diseases and insect pests

The main pests of yellow poplar are shell insects and yellow poplar rulers, which can be killed by manual brushing or sprayed with 1500 times of 80% dichlorvos, or with 40% omethoate 1000-2000 times. The main disease is coal fouling disease, which will cause defoliation. The key to prevention and treatment is to remove shell insects, and often spray foliar water to wash dust to make it grow well.

Modeling and maintenance of bonsai of Populus tomentosa

Euonymus tomentosa is an evergreen shrub or small tree of the Euonymus family, also known as Orthodox and Holly. Because its leaves are evergreen all the year round, it is also known as "holly" or "Daye holly". Populus tomentosa can be processed into straight dry type, oblique dry type, curved dry type, double dry type and other different forms of bonsai according to the stump shape. The seedling branches are soft and can be modeled from a small age, first banding the trunk, then the main branches and lateral branches, and pay attention to cutting off the excess branches in time. Because of its large leaves, small and medium-sized bonsai crowns mostly use chic natural shapes, while large bonsai use regular round, steamed bread and triangular crowns. The modeling is mostly carried out by the method of "coarse binding and fine cutting" in the growing season, first using wire to tie out the basic shape, and then fine pruning until it is formed. The characteristic of fast wound healing of Euonymus tomentosa can be used to carve the trunk to make it old and simple. Populus tomentosa likes warm, humid and sunny environment, slightly resistant to shade and cold, and is not strict with the soil, so it can be planted with ordinary garden soil. Usually can be put in the outdoor ventilation to the sun to maintain, watering to see dry and wet. Water should be watered frequently in summer to ensure an adequate water supply and prevent leaves from drying up. Spray water to the plant when the air is dry, which can not only increase the air humidity, but also wash away the dust on the leaf surface and make the leaf color clean and moist. Apply thin alum fertilizer and water once a month to provide sufficient nutrients to make the leaves green and bright, but to avoid excessive fertilizer and water, otherwise the plants will grow too long and the leaves will become larger and affect the ornamental. The germination of Euonymus tomentosa is strong, and it is often necessary to hit the head and pick the heart in maintenance in order to control the plant growth and make the leaves dense and small. The branches and new buds that affect the tree shape should be removed in time to maintain the beauty of the bonsai. Do not apply fertilizer in winter, when the basin soil is too dry, you can properly pour some water to keep the soil moist and avoid the death of bonsai caused by dry freezing. It should be noted that the indoor overwintering big-leaf boxwood bonsai should not leave the room too early, because it sprouts early, if it encounters spring cold or sudden cooling, it is easy to freeze to death of new buds, resulting in weakening of plant growth and death of plants in serious cases. The basin is turned every spring every two years. Insect pests such as shell insects, diamondback moths, diamondback moths and leaf rollers are easy to occur in summer and autumn, so attention should be paid to prevention and control. The main disease is powdery mildew, which can improve the cultivation environment, maintain air circulation and avoid muggy and humid environment. If the disease occurs, it can be controlled by spraying carbendazim, carbendazim or benzoate zinc from 600 times to 700 times.

Maintenance of Populus tomentosa bonsai

The proper maintenance of boxwood bonsai affects its growth life. The following are the key points for the conservation of boxwood bonsai:

1. Watering

Watering the boxwood bonsai is different from the general plant maintenance principle of "no dry, no watering, watering thoroughly", and its watering method is more complicated. Boxwood itself grows in areas with high humidity, and there is no way to adapt to transplanting it into the basin, so it should be replenished with a lot of water in time to keep it moist. However, watering methods should also take different measures according to the climate. For example, when the water in the basin is sufficient and the temperature is between 10 ℃ and 20 ℃, the method of watering is to spray the plants once a day; if the temperature is above 20 ℃, if the soil surface dries, it should be watered to moist the soil, and then water through every corner of the branches and leaves.

two。 Light

Although the yellow poplar likes the light, it is not suitable to be exposed to the strong sun, it is easy to hurt the branches and leaves of the yellow poplar. The newly excavated tree species should be cultivated in a cool, astigmatic position for a period of time, and then cultivated on a daily basis. When Populus tomentosa adapts to the new environment, it can be naturally grown outdoors every 10 to 15 days, which can make it have more tenacious vitality.