Production rules of cut rose

First, the propagation of cut rose is mainly through grafting. The rootstocks used are wild rose, pink rose or thorn-free dog rose, and thorn-free dog rose is the most ideal. Grafting propagation takes place in the growing season, usually from mid-March or early July to mid-September. At this time, the bark of the rootstock is easy to peel off, the operation is convenient, and the survival rate is high. When grafting, first make a vertical incision on the rootstock, and then make a horizontal incision to form a "T" shape. Then cut the shield-shaped bud piece from the scion and insert it into the incision. And then tie up the location. Cut off the above part of the incision after the scion survived. The seedlings can be formed after 3 months. In addition to grafting propagation, cutting and tissue culture are also commonly used in production. However, the root system of cutting seedlings is not prosperous and the life span is short, which is not conducive to popularization.

Second, cultivation management (1) soil preparation. Soil disinfection is carried out before planting, mainly by steam disinfection, and can also be fumigated with chloropicrin unconditionally. After chloropicrin fumigation, it should be turned deeply for many times to avoid drug damage affecting the development of plant roots in the future. Then apply 20 cm thick farm manure, ploughing and turning it into a 50 cm wide high border with a height of 15 cm to 20 cm. (2) colonization. There are two rows in each bed, and the plants cross each other, which is beneficial to ventilation and light transmission. The distance between plants is 30cm to 40cm. Spread the roots in all directions when planting. The grafting interface should be 1cm higher than the soil surface, and the soil should be slightly higher than the ground. After settling, keep the interface still on the ground to prevent the scion from rooting. (3) Post-planting management. In the seedling stage, the buds are removed in time to promote root growth. When the flowering mother branch is up to 50 cm long, the flower can be retained for production. Remove lateral buds and buds in time to ensure the development of apical buds and remove buds from rootstocks and roots from scions in time. (4) skillfully apply fertilizer and water. Rose watering should follow the principle of seeing dry and wet. Usually watering twice a week in the growing season, watering once a week in the dormant period is appropriate, but it can be adjusted appropriately according to the weather and soil moisture. Topdressing is commonly used inorganic liquid fertilizer, less nitrogen fertilizer, more phosphorus and potassium fertilizer.

Third, the timely harvest of cut flowers is an important factor related to the vase life of cut flowers. Early harvest of flower branches is easy to produce curved stems, too late harvest will shorten the vase time. The red and pink varieties of rose are generally harvested when the first petal is loosened, the yellow variety should be slightly earlier, and the white variety should be harvested when the third petal is loosened.