How does Rosa davurica breed?

How does Rosa davurica breed? If you want to know this question, you might as well take a look at the following introduction!

How does Rosa davurica breed?

Rosa davurica can carry out seed reproduction,

However, most of the artificially cultivated roses have no seeds, so most of them are propagated by cutting. Cutting propagation is simple and easy to survive, and it is very common that it can bloom in the same year after cutting. However, rare varieties are difficult to transplant and can be propagated by layering or grafting. The cutting propagation method of Rosa davurica is as follows:

It is best to plant a new shallow pottery jar with a diameter of 20 cm, because it is breathable and easy to take root. The substrate can be cultivated soil mixed with 20% humus garden soil, 40% horse manure chips and 40% river sand.

The best planting time is in spring (May) and autumn (65438+1October), when the temperature is between 20-25℃, which is the most suitable for planting.

When cutting, select semi-lignified and well-developed branches as cuttings, and press the knife with a very skilled daughter-in-law; Cut 6- 10 cm from the node, and the incision should be smooth and tidy. Cut off the lower leaves, leaving only 3-4 leaflets at the top. Buy 1 Vitamin B for injection12, after opening, soak the cut strips in the medicinal liquid, take them out and dry them for a while.

Spray the culture soil in the pot with a watering can the day before inserting, but not too much. It is just wet the next day, which is most suitable for inserting. The insertion depth is 3-4 cm. When inserting, first leave a hole in the soil with chopsticks, then insert the cuttings, compact them by hand, let the pot soil fully contact with the cuttings, and then water them again.

It is best to cover the flowerpot with a plastic bag when inserting it.

Tie the bag mouth with a belt, open it when you need to water it, and then tie it again after pouring it. The inserted flowerpot should be placed in the direct sunlight, and the inserted flowerpot soil should be sprayed with water 10 day every day, except in rainy days, 1 time on cloudy days and twice in dry climate, but the amount of water sprayed every day should not be too much. After 10, always keep the soil moist. Shade it for 4-5 weeks and let it gradually receive some sunshine until it germinates. It usually takes about 2 months to take root. After that, it only needs normal maintenance. Cultivation and management of roses

1. Fertilization management: Rosa likes fertilizer and is barren. Liquid fertilizer mainly containing nitrogen can be applied 0 ~ 2 times in March to promote the growth of branches and leaves, and fertilizer mainly containing phosphorus and potassium can be applied 2 ~ 3 times in April ~ May to promote more pregnant buds to bloom. After flowering, fertilization can be stopped. Rose is a positive flower, which likes temperature and cold, and can safely overwinter outdoors in North China and its south area.

2. Watering management: roses like to be wet, but they are afraid of being wet and avoid waterlogging. From germination to flowering, you can properly water more, so that the soil is moist and not waterlogged. After flowering, there should not be too much water and the soil should be dry and wet. Pay attention to drainage and flood prevention in rainy season.

3. Pruning: Roses germinate strongly and flourish. If not pruned in time, diseases and insect pests will easily occur under the conditions of sultry, humid, insufficient light and poor ventilation, so prune once after flowering. When pruning, you can choose semi-lignified robust branches of that year, put them in a semi-shady place, transplant them in the next spring after survival, or cut off new buds with roots and replant them before germination in early spring.