Winter production of cut rose in northern China

The out-of-season production of rose requires that the flowering period is from September to April of the following year, so there should be both summer control and greenhouse management in winter. You can choose varieties with strong adaptability, such as Velcro, Sabensa and so on.

1, fertilization and density requirements: rose should be fully fertilized before planting, generally 5 square farm manure and 2 chicken manure should be applied in each shed, mix well and turn into the ground and rake flat. Make the border in the north-south direction, the width of the border is 1 meter, and the length is limited to the width of the shed. Each bed can be planted in two rows, with a row spacing of 0.4 meters and a plant spacing of 0.3 meters, which is generally suitable for 7 trees per square meter.

2. Planting period: the whole year can be divided into three seasons: first, in April, before branches germinate; second, from mid-July to mid-August; third, planting after frost and fallen leaves. According to the conditions, the general spring planting through summer control and promotion management, the winter flower yield is high; from mid-July to early August, it can also produce flowers normally in winter; after Frosts Descent planting, the flower yield is low in the same year.

3. Post-planting management: (1) watering immediately after planting, once every 3-4 days, 3 times in succession; fertilization is prohibited in slow seedling stage. (2) pruning is an important management measure for off-season production of rose. Let it hibernate forcefully from the end of May to September, that is, leave only branches and leaves for photosynthesis and accumulate nutrients; wipe off the upper buds at any time, but keep the basal foot buds, let them grow but not blossom, and erase the upper buds as soon as they germinate. From September, the whole plant left only one weak growth branch as a supporting branch, and all the other branches left 3 buds short, which were cultured into flower branches, the foot buds on the branches were retained, the upper buds were erased, and the flowers could be cut when the buds appeared. When cutting the flowers, the three buds at the base were still truncated and carried out repeatedly. In this way, the fresh flowers can be produced for 5-6 years, and the high yield period can be 2-4 years.

4. Winter management: in the first ten days of September, the greenhouse should be covered with plastic film, and the winter temperature should be kept at 15: 28 ℃. There should be a timely fire to raise the temperature, and there should be no smoke in the shed. The light time should be 8: 10 hours every day. In winter, it will be opened at 8 a.m. and released from 10:00 to 1 p.m., and covered at 5 p.m.