Purple branches rose cuttings can be divided into summer and winter cuttings according to time; according to the maturity of shoots, they are divided into tender branch cuttings and hard branch cuttings, which are often used for cuttings in summer and hard branches for winter. Of course, hardwood cuttings can also be carried out in spring and autumn, but many are not used. Because the spring branches serve as flowering tasks, cutting affects the yield and ornamental value of the flowers. The growth of the autumn cutting seedlings in the coming year is almost the same as that in the winter greenhouses. However, the autumn cuttings must be managed for several months, which is time-consuming and laborious. , It also accounts for several months.
In summer, all-light spray method is used for cutting seedlings. The cutting time is usually from mid-June to mid-August, depending on the growth condition of the local seedlings, and we mostly do it in the middle or late July.
The first is the construction of a seedbed. Seedbed to choose ventilation, no building block, convenient access to electricity and water the size of the seedbed depends on the number of breeding seedlings, the width of more than 1.5 meters, the length according to the situation to customize. First lay a layer of bricks on the ground and surround the wall with 3 or 4 layers of bricks: The matrix can be made of frog stone or river sand. Disinfect the substrate 10 days before cutting and use 0.3% potassium permanganate solution. The substrate is laid flat on the insert bed and has a thickness of about 30 cm. The number of nozzles installed depends on the size of the spray pressure. This is the key to the technology. Because the all-optical spray cutting seedlings are in the open-air seedlings, regular spraying of water is used to ensure that the substrate is moist. The fog sprayed by the installed nozzle must ensure that the seedbed is completely covered and there should be no dead ends. If you breed in small quantities, cut in the nutrition bowl.
Followed by choosing cutting inserts. The cuttings should be cut from the upper and outer parts of the rose shrubs, and the semi-lignified vegetative shoots of the year should be cut, then cut into 10 to 15 cm long cuttings, cut at the lower end, cut at the upper end, and cut at the upper end. One or two pairs of secondary leaves, and the lower half removes all the leaves. Immediately after cutting, put pots containing water in water to prevent water loss and wilting (Figure 1). For example, at the flowering stage, it is best to choose vegetative shoots without buds and flowers. After cuttings are cut, they are inserted into the substrate on the day and do not stay overnight. The depth is 2 to 3 cm. It is easy to fall over, and it is too dark to be easily rotted. The density is about 600 square meters per square meter. If the density is too low, the ventilation is not good and the effect is growing. If the density is too thin, the space is wasted.
Once again, the maintenance management immediately sprays water to supplement the leaf moisture, and at the same time, the cuttings are closely connected with the seedbed. Afterwards, the water spray and the interval time can be adjusted at any time according to the weather temperature and the moisture content of the leaf moisture matrix. As long as the leaves have water droplets, no leaf wilting occurs. To minimize the amount of water spray in order to increase the temperature, which is conducive to root growth and reduce disease occurrence. When the temperature exceeds 30 °C, the number of water sprays should be appropriately increased: some fertilizer can be added to the water, and the nutrient solution can be prepared and sprayed regularly. Weeds should also be promptly removed to ensure smooth rooting. By 20 days, the rooting rate can reach more than 85%. In 25-35 days, the seedlings grow fibrous roots, the roots are thick and the color darkens. At this time, the amount of water spray is gradually reduced, and water is only sprayed at a high temperature at noon to carry out hardening. The seedlings can be transplanted in 5-7 days.
The last is transplanting. Choose cloudy days or transplant sooner or later. Before transplanting, the seedbed should be irrigated to make the bed soft, so as not to damage the roots when the seedlings are raised. The seedlings were excavated with a shovel and gently shaken off the substrate. The plant spacing was 10-15 cm and the row spacing was 30-40 cm. Immediately after planting, watering should be carried out, and then watering 2 or 3 times continuously. After the seedlings are slowed, weeding and weeding should be done in time to ensure that the rose seedlings thrive.
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