Cultivation and management of perfume rose the flowers are large, gorgeous and fragrant.

Perfume rose is a plant of the genus Rosa, which is suitable to grow in an environment with plenty of sunshine and air circulation. It is not strict with the soil, but attention should be paid to the following links in open field cultivation.

Rose: prevention and treatment of rose aging and rejuvenation of old piles

I. cultivation area

Perfume rose is a light-loving plant. In the process of cultivation, you should choose sunny ground and avoid planting in the shady side of tall buildings, trees and hillsides. The ideal soil for cultivating perfume rose should have good aggregate structure and rich content of organic matter. Perfume rose does not require high soil acidity and alkalinity. It can grow in soil with a pH value of 5.5-8.0, but grows best in a slightly acidic soil with a pH value of 6. The root system of perfume rose is mostly concentrated in the soil surface layer with a depth of 30 cm ~ 40 cm, so the depth of the tillage layer should be 50 cm ~ 60 cm.

II. Fertilizer selection

Perfume rose likes fertilizer, especially organic fertilizer, such as barnyard manure, compost and so on. The application rate of organic fertilizer is about 150 kg per 10 plants. Perfume rose has a long flowering period. During its growth, attention should be paid to topdressing chemical fertilizer for quick effect. The ratio of nitrogen, phosphorus and potassium should be 1:1:2 or 1:2:3. The frequently used chemical fertilizer is calcium superphosphate, with an average of 2 kg per 100 square meters.

3. Distance between colonized plants

The plant-row spacing of perfume rose varies according to the purpose of cultivation. The plant row spacing of variety nursery used for breeding or scientific research is 150 cm × 80 cm; for parks, flower shops, streets, factories and mines, it is necessary to adjust measures to local conditions and adopt wider row spacing. The seedlings should be pruned before planting, including damaged branches, diseased branches and weak branches, and damaged or overgrown roots should also be cut off. When planting, the soil dry and humidity should be suitable, if it is too wet, the planting should be postponed, and the soil should be dried for a few days before transplanting; if it is too dry, it should be watered 2 ~ 3 days in advance.

IV. Water management

The water management of perfume rose is also an important work. Insufficient or excessive water will inhibit its growth and development, which needs to be adjusted according to its different stages of growth and development. Spring and autumn is the peak flowering period of perfume rose, during this period, the water supply should be adequate; in order to control plant growth, watering should be suspended before pruning, and the amount of water should be increased appropriately after pruning. In addition, if cultivated in sandy soil with poor water conservation, watering times should be appropriately increased; in soils with poor drainage, watering should be cautious to prevent rotting roots.

5. Pruning and plastic surgery

The purpose of pruning is to let the perfume rose sprout as many strong branches as possible to improve the quality of flowering. In addition, pruning can also make the tree complete and balanced, making it in harmony with the space in which it lives. The best time for pruning is when the plant stops dormant and is about to sprout, or when it stops growing and is close to dormancy. There are three forms of pruning: light pruning, moderate pruning and heavy pruning. Light pruning is to cut short the healthy branches and remove the inward expanding buds; moderate pruning is to cut off or cut off half of the healthy branches born in the first year at the base; heavy pruning is to leave only 3 ~ 4 first-year branches in the whole plant, and then cut them 20 centimeters above the ground. For newly transplanted plants, plants that have been pruned before planting need not be pruned in the first year of planting. After a year, the Keqi root cuts off the branches that grow weakly and cross together, and the strong branches left behind should be cut off at least half of the length. Perfume roses that have been planted for more than 3 years still need to be pruned every year to keep the plant shape perfect.

VI. Winter maintenance

Some anti-freezing measures should be taken in areas where the minimum temperature in winter is below minus 15 ℃. For example, 20 cm of soil is piled at the base of the plant, or the plants are wrapped up with grass curtains, hemp bags, plastic films, etc. In areas where the lowest temperature in winter reaches minus 20 ℃, it is necessary to dig up the soil on one side of the plant, put it down and cover it all with soil.

END

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