Cutting methods of Chinese rose

The cutting method of rose is divided into hard cutting and tender wood cutting. the hardwood is combined with winter pruning every November, and the healthy branches are cut by about ten centimeters, with three to four leaf buds, inserted into the sand, watered and covered with film for heat preservation and moisturization. generally, it can take root in April and can be transplanted in June. Twigs from February to June, take five to seven centimeters of strong shoots from the sprouted plants and insert them into the washed river sand, pour them thoroughly, cover with film and water two or three times a day, ventilate at noon and take root in a month.

Preparation of Chinese rose before cutting

1. Weeding and ploughing. Each mu of bed is mixed with 200 kg of rotten farm manure (cow dung) and 25 kg of calcium superphosphate as base fertilizer. In order to reduce the incidence of cutting seedlings, the soil should be disinfected before cutting: spray the soil with 50% carbendazim wettable powder 500 to 800 times or 800 times carbendazim wettable powder, then cover with plastic film for 3 to 4 days, and cut 1 week after opening the film.

2. The number of cuttings. At present, there are 9 solar greenhouses available, and the specification of solar greenhouse is: 608 (m). The cutting density is 5: 5 (cm). Excluding the area occupied by ridges, 160000 plants can be cut in each shed.

Cutting methods of Chinese rose

1. Selection of cuttings. The quality of cuttings is the key to ensure rooting and improve the survival rate of rose cuttings. First, it is necessary to select the mother plant of an excellent variety that is vigorous and free of diseases and insect pests, and the second is to have a good nutritional basis of branches, so cuttings should choose sturdy and strong branches with a diameter of one-year-old branches of 5~8mm, preferably the branches after the top flower blossoms in the current year. For the old branches of more than one year, the Lignification degree of the cortex is higher, and it is more difficult to take root. The cuttings were cut into 3-5 buds about 8~12cm long, the basal end was cut diagonally from the 2cm below the node, and the top was cut flat above the node bud, and the wound was sealed with Vaseline or wax. 2-3 pairs of leaves were left at the top of the cuttings, and some of the leaflets were shrunk, while the basal leaves were all cut off.

2. Root treatment. Before cutting, the cuttings were dipped with 50~100ppm ABT rooting powder or indole acetic acid for 3-5 minutes to stimulate cell division, promote callus formation, achieve rapid rooting and multiple roots, and improve the survival rate of cuttings.

3. Cutting. Do as much as possible with pruning, with treatment, with cutting. Do not hurt the skin when cutting, generally use a small stick or finger to insert a small hole in the bed, and then put the cuttings into the hole. The cutting depth is from 1 to 2 of the length of the cuttings. After insertion, the cuttings are compacted with hands and watered once, so that the cuttings are closely combined with the soil. Remember not to cut the cuttings down.

4. Plug-in management

① arch shed, cover sunshade net: plastic shed can adjust the temperature and humidity of soil and air, sunshade net can prevent direct sunlight and reduce temperature. The light transmittance of the sunshade net should be 20% to 30%. In addition to covering the sunshade net on the top of the seedbed, it is also necessary to hang curtains on the east and west side of the seedbed to reduce sunlight in the morning and evening. The best rooting temperature of rose is from 20 ℃ to 25 ℃. The temperature is too high. Besides covering the sunshade net, it can also be watered and ventilated.

② watering: in the early stage of cutting, the cuttings have not yet germinated leaves, and the water supply should not be too much, usually once every 7 to 10 days. After a month, the panicle begins to root and shoot, and the water consumption increases gradually, which should be irrigated every 3 to 5 days. The amount of water should be determined according to soil moisture and air humidity, so that the soil is moderately dry and wet.

③ fertilization: the amount of fertilizer needed for cutting is not large, and the basic fertilizer has been applied during soil preparation, so there is no need for soil fertilization before seedling transplanting, but foliar fertilization should be carried out. That is, after cutting for one month, 0.3% urea liquid fertilizer and 0.2% potassium dihydrogen phosphate liquid fertilizer are used in turn every half a month for foliar fertilization to promote rooting.

④ weeding: pull out the weeds in the bed in time, but do not move the seedlings.

⑤ seedling refinement: half a year after the seedlings take root, the ventilation and light time should be properly prolonged to improve the seedlings' ability to adapt to the external environment.

Matters needing attention in cutting rose

1. The seedlings of cuttings should not be too tender, and the branches that have been lignified should not be used, but the branches that are sturdy and dark green in color should be selected.

2. Circle the outer skin of about 0.2-0.3CM near the 1CM of the bud, and cut off the cuttage after a week. The survival rate is the highest. To ensure 100% survival, high-pressure reproduction can be used. In other words, it will definitely take root in the gap, but the disadvantage is that the high-pressure propagation method is only suitable for strong branches with a small number and slow speed, which is not as fast and simple as the cutting method, because the branches used for cutting can even be the remaining branches after pruning rose, which can reproduce dozens of seedlings at one time.