In the spring, the roots begin to grow in the soil. The most important management task at this time is pruning. The warm southern region should be carried out in the middle and late February, while the cold northern region is March or April.

The pruning work is generally about 1/3 of the height of the cut plant. The first is to cut off the weak branches, the diseased branches and the dead branches. In the previous year, the new shoots sprouted from the plants were the most prosperous, leaving 2 to 3 strips of up to 5, and trimming them with scissors at a distance of 1 cm above the strong shoots about 5 cm from the ground. The so-called robust buds are buds that have not yet sprouted, plump, and bulged.

In order not to form a dense branch during the growth of the bud, the strong bud above the outside of the plant should be selected. In addition, the trimming should be carried out at the fullness of the branches. When you trim with scissors, the sound of "squeaky" is the full part. If you feel the incision soft, you should cut it down hard.

The middle part of the main branch of 2~3 years old is the multiple part of the sprout, so only 10~20 cm can be left when trimming. If you want to make the flowering period more flowering, you will carry out weak cutting. If you want to spend a good time, do not ask for more flowers, then carry out strong cutting.

In addition, plants that are not growing well should be determined to cut strongly, because the roots of this plant are poorly developed. If the canopy is too large, it is easy to cause insufficient nutrient supply. It is best to do high-concentration disinfection at the same time as pruning. The prevention and control of pests and diseases has a significant effect.

In order to make the trimmed branches not tilt outward, they can be fixed by pillars (wood sticks, etc.) to make the tree shape balanced and avoid the collision of the branches and leaves when the wind blows. The branches of the lower buds of the sloping branches are more robust and the flowers are luxuriant, so care should be taken.

After the convulsions, all kinds of insects wake up from hibernation and start activities. At this time, 10 ml of chlorpyrifos (insecticide) and 20 g of wettable sulphur powder for controlling powdery mildew are dissolved in 10 liters of water to fully dissolve. The concentrated solution is sprayed on the plants. Because there is no leaf at this time, there is no need to worry about phytotoxicity.

About 20 days after pruning, the buds begin to sprout, and the weak buds are naturally eliminated during the germination process. In order to make the flowers bloom well, it is necessary to leave the buds according to the thickness of the main branches, leaving 3 to 4 buds. The pencil thickness of the pencil leaves 1 to 2 buds, and the rest are removed. In the cold northern regions, sprouting is late, and the germination time can be appropriately delayed.

In addition, if the base fertilizer has been applied in December of last year, it is not possible to topdress in the early spring. When the buds are germinated, sprinkle an appropriate amount of flower fertilizer around the roots to promote germination. After the buds are taken out, if the surface is dry on a sunny day, in order not to freeze the surface, water can be properly watered before noon.

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