When is it appropriate to prune Toona sinensis trees?
It is best to prune Toona sinensis trees in spring, in synchronization with the harvesting of Toona sinensis buds. The specific time is from the second year. After the top bud of a 2-year-old tree is removed, 2-3 new buds will grow in that year, and 2-3 lateral branches will be formed after lignification.
Cutting: When cutting Toona sinensis, select semi-lignified branches with the length of 15 ~ 20cm, cut off the bottom leaves, soak them in rooting water for half an hour, water the seedbed, insert the cuttings into the soil to a depth of 5cm, and then move them to a ventilated and backlit environment to keep the soil moist until the branches take root for about half a month.
How to prune the branches and leaves of Toona sinensis
1. Spring pruning: Spring pruning of Toona sinensis belongs to modeling pruning. From the second year after cultivation, the top buds of 2-year-old trees will be removed, and 2-3 new buds will grow that year. If the height of the trunk is suitable, new buds can be kept. If the height of the trunk is too high, you can pick new buds to promote the germination of the lower buds.
2. Summer pruning: Summer pruning of Toona sinensis trees is generally carried out in sunny days from July to August, which is conducive to wound healing. Cloudy days are not suitable for pruning. On the pruned Toona sinensis tree, cut the branches that are too strong and too high to promote the germination of lateral buds.
3. Pruning in winter: It is best to prune Toona sinensis trees in early winter and early spring, and prune annual dense branches, weak branches, pest branches, dead branches and old branches. Pruning should be close to the trunk, pruning from bottom to top, and the incision should be smooth.
Pruning skills of Toona sinensis trees
1. Picking: After the tender buds of Toona sinensis are picked, after a period of time, new buds will grow in this part. These new buds are its heart, so they are usually picked in spring, and when they reach a certain height, they can break off the branches and buds.
2. Germination: Toona sinensis trees should germinate after coring. Generally, gloves are needed, and the buds and leaves growing next to them can be removed to prevent excessive consumption of nutrients.
3. Long branches: When the Toona sinensis tree is pruned, the long branches should be cut off. If the branches are too long, it will affect the light intensity of other plants. When pruning, the length can be controlled at about half a meter to avoid being too long.
How can Toona sinensis trees grow fast by pruning?
The pruning of Toona sinensis tree is mainly divided into three links, namely, fixed stem, growth period pruning and dormancy period pruning.
1, stem fixation of potted Toona sinensis: The most important thing of potted Toona sinensis is to control the height and increase the yield. The first step to control the height of Toona sinensis is to fix the stem and prune it to make the trunk height of Toona sinensis 15-20 cm. Fixing stems is usually carried out before germination in spring, and 3-8 new branches can be issued in that year.
2. Pruning in summer: For 3-8 new branches sprouting after the Toona sinensis tree is fixed, 3-5 branches with good growth can be selected according to the situation, and other redundant branches can be cut off in time. When these remaining branches grow to 10- 15 cm, they can be pruned for the first time in summer.
3. Dormancy pruning: If the potted Toona sinensis saplings are pruned timely and correctly in summer, then there is no need for dormancy pruning. If it is not pruned well in summer, it can also be pruned during hibernation.
Matters needing attention in pruning Toona sinensis trees
When picking the second crop of Toona sinensis, topping is needed. When the wound is dry, paclobutrazol solution is sprayed to control the topping advantage, promote the rapid growth of branches and realize dwarfing culture.