Choose plots with good ventilation, sufficient sunshine and high dry terrain for planting. It is not advisable to choose low-lying plots. Usually, before winter, plough the land, apply organic fertilizer and Pica bacterial fertilizer, harrow it, and intensively cultivate it.

Second, the method of reproduction.

The propagation mode of roses is usually asexual propagation: ramet, layering, grafting and cutting, among which ramet propagation is widely used. The time is spring, autumn and rainy season, and it is best to do it during the dormant period.

1. Clonal ramet

Separate plants during dormancy or before germination in early spring. Dig out strong-rooted tillering seedlings (each cluster needs two or three branches) next to the mother plant, dig them up and transplant them.

Step 2 cut

Choose robust, pest-free, fully developed and completely lignified hard branches, cut them into cuttings with three or four nodes and a length of 10 ~ 15 cm, and cut the lower part into inclined planes. It is better to treat them with Bika rooting agent. Then plant it on loose bed soil, leaving 30% cuttings above the ground. Pay attention to heat preservation and moisture retention after planting, and transplant after rooting and germination.

Step 3: Stratification

In rainy season, select the branches of that year, bend down and press them into the soil, carve out the buried parts of the branches, apply agricultural fertilizer, and then cover the soil to make them take root. After rooting and sprouting, cut off the mother body and plant it with soil.

Third, on-site management

Roses are mostly grown outdoors. When planting, it is necessary to apply decomposed organic fertilizer. Because roses are fertilizer-loving plants, they generally need to be fertilized four times a year: 65,438+0 times before germination in early spring, 65,438+0 times before flowering (around May), 65,438+0 times after flowering and 65,438+0 times before overwintering.

When the weather is dry in early spring, water it in time to promote flower bud differentiation and prolong flowering time. Regular intertillage and weeding should be carried out during the growing period. Roses are afraid of waterlogging and avoid water accumulation.

Fourth, plastic trimming.

Plastic pruning is an important link in rose management.

1. Flowering pruning

After flowering, prune diseased branches, insect branches and aging branches to promote the continuous rejuvenation of plants. 1 After the first batch of flowers is opened, if the second batch of flowers are cut off at a position about 15 ~ 20 cm above the base of the flower branch, the development of new branches will be promoted, with more flowers and good quality.

2. Dormancy pruning

Before germination in early spring, leave four or five branches per plant, cut them short at 40~50 cm from the ground, leave 1 ~ 2 lateral branches per branch, and leave 2 buds per lateral branch. The life span of a single rose can be as long as more than 20 years. Three-year-old plants bloom the most, and after four or five years, they begin to decline, and the yield and quality of flowers decline, tending to aging. Therefore, it needs to be updated and rejuvenated. The method is to dig out the old roots of roses planted for 4 ~ 5 years during the dormant period, remove the branches of diseases and pests and replant them. Separate the plants that are too dense and flourishing, or cut off the aging rose plants in autumn and winter, then turn over the soil between rows, apply mature organic fertilizers such as cake fertilizer and fill them with water. In this way, although there are not many flowers in the second year, the flower output will be greatly improved in the next 2~3 years.