Pruning method of Photinia rubra

Red leaf Photinia is a kind of green plant, common varieties are red Robin, red lips and so on, usually used as street trees or hedges, need to be trimmed landscape, after pruning can be a variety of shapes, the landscape effect is beautiful, and red leaf Photinia pruning is skillful, let's take a look at red leaf Photinia pruning method!

Growth habits of Photinia rugosa

Photinia likes warm, humid and sunny environment, has strong cold tolerance, can withstand the lowest temperature-18 ℃, likes strong light, and has strong shade tolerance. It is suitable for all kinds of medium fertilizer soil, barren soil, salt-alkali resistance and drought tolerance, not water and moisture resistance, fast growth rate, strong sprouting ability, pruning resistance, easy to transplant and shape.

Pruning skills of Photinia rubra

1. Pruning time: Photinia pruning has three main months of birth in March, June and September, so pruning Photinia should leave the vacant places in the middle of these three months, and the extra branches will be trimmed off. In this way, its crown width will become more and more round, more and more refined.

2. Pruning position: when pruning the branches of Photinia rubra, do not get too close to the bud, so as to avoid the growth of new sound buds.

3, crown width refinement: in general, there will always be a small number of hanging branches below it, and these branches will be beautiful in sound crown, so it is necessary to prune these branches without sound crowns. In this way, the crown width of Photinia rubra is round and tight, and a fine crown width of Photinia rubra is presented in this way!

Pruning methods of Photinia rubra

1. Isolated tree type: in the first year, flood fertilizer was added to the seedling stage to promote the development of seedling height, and in the second year, local lateral branches in the lower part of the plant were properly trimmed and continued to be treated with flood fertilizer. From the end of February to the beginning of March in the third year, according to the requirements of the backbone height of about 1.5 meters, the lower side branches were removed, and the upper main shoots were topped to promote the side branches to form a crown. 3 or 4 side branches were generally required, after the first topping. If the number of lateral branches is still less than 3 to 4, the second topping will be carried out after the development of the main shoot of 30 to 40 centimeters, and the lateral branches will be divided again. Through continuous cultivation, the specification for the type of isolated trees for engineering can be reached.

2. Low spherical shape: Photinia chinensis seedlings are topped when the seedling height is about 40 cm, promoting the division of multiple lateral branches (at least 3-4). If there are still less than 3-4 lateral branches after the first topping, the second topping is carried out as appropriate. In the future, due to the development and prosperity of the upper branches of the crown, it is necessary to cut heavily, and the side branches should be gently cut to remove the long branches in real time, so that the whole crown is close to the center and gradually "huddled together." after light cutting and shaping, it becomes a ball.

3. High-dry spherical shape: usually the high-dry spherical shape of Photinia rubra can be done in two ways.

① method 1: strengthen water and fertilizer management to promote seedling height development in the first year, properly remove local lateral branches in the lower part of the plant in the second year, and continue to add flood fertilizer treatment. In the third year, from the end of February to the beginning of March, according to the requirements of the backbone height of about 1.2m, all the lower lateral branches will be lost, all the branches above 1.2m will be preserved, and the main shoots will be topped to promote lateral branches, and the future will be trimmed according to the method of short spherical shape.

② method 2: select large Photinia seedlings as rootstocks, under the condition of sufficient backbone height, trim the crown, according to the scattered parts of the crown branches, according to the requirements of the crown roundness, use the bud grafting method to graft 6 buds on the rootstock, pay attention to real-time sprouting after grafting, promote bud germination, and use the dwarf ball shape method for pruning, which can be cultivated into high-stem red leaf heather balls. As the bud grafting is easy to survive, using this method to cultivate high-dry ball seedlings of Photinia chinensis is not only labor-saving but also easy to operate, so it is worth vigorously promoting.

4. Cylindrical modeling: the plant is selected according to the height of the shape (that is, the height of the cylinder is required). When the height of the selected plant reaches the height of the column, the backbone is peeled (that is, topped), and then according to the expected pruning line, the branches and leaves are trimmed into a cylinder from the upper to the lower part of the plant, and then gradually adjusted to cultivate the cylindrical tree directly when the height of the selected plant does not meet the high requirements of the column. To enhance the treatment of water and fertilizer, the central vertical branches of the plant should be preserved, and the surrounding branches should be cut short and round, so that the plant has a sense of "soaring into the sky". When the height of the plant reaches the requirements, the backbone is topped, and the branches around the plant are continuously cut short and round, and a cylindrical tree can be cultivated after gradual pruning and treatment.

5. Hedge modeling: Photinia hedgerows can be divided into hedges and distance hedges.

① hedgerow shape: the top of the plant is re-flat cut according to the height of the hedge, its cross section can be so flat rectangular, can also be trapezoidal, the side branches can be cut vertically according to the thickness requirements of the green hedge wall, and its trimming surface is required to be "flat and even". In the future, gradually precision pruning can be formed.

② distance hedge: requires that the length of the hedge is different, usually 1 to 1.5 meters for a section, each section must be separated by a certain interval, the modeling method is basically the same as the green hedge.

6. Cube shape: the cube tree, that is, the top section and the surrounding section of the plant are uniform square, according to the size requirements of the cube, choose to develop strong, luxuriant red leaf Photinia plant, first re-cut the top of the plant, and then re-cut the appropriate length of the surrounding side branches to promote the development of new branches. after the new branches germinated, they were cultivated and then gradually trimmed into a "square" plane.