1. Selection of materials
The trunk and whorled lateral branches of large and medium-sized Phoebe bournei can be used, or the upper branches can be cut off to make full use of it in combination with the dwarfing treatment of bare-footed Phoebe bournei (the whorled branches at the base died due to lack of light). The trunk is cut about .5 cm from each verticillate branch, and then each verticillate lateral branch is left for 1-15 cm to be cut, and the cut lateral branches are shortened according to the length of 8-1. cm. With the terminal bud of the trunk as the cutting, it can be cut about .5 cm from a fully developed layer of verticillate branches
2. Arrangement of cutting < P > Cut the lower ends of the cut sections into inclined planes with a sharp knife, and pull out all the needles below 1 cm from the lower end of the trunk cutting; Pull out all the striker leaves of less than half of the side branch cuttings, and properly dilute the life skills of the upper half; The terminal bud is reserved at the top of the lateral branch. The cuttings are separated by trunk and side laurel.
3. Cutting
First, prepare 1ppm solution with No.1 ABT rooting powder, and let the lower end of each section soak for 1 minutes (or soak for half an hour with No.2 ABT rooting powder). Other rooting plants can also be used. The concentration of rooting plants should be the maximum concentration of plants that are difficult to take root, and the soaking time should not be too long, otherwise the survival and growth rate will be affected by too much sap loss.
Insert the trunk cuttings according to the distance between the verticillate branches of the two cuttings. Before inserting, drill a hole of 1 cm in the sand bed with a stick slightly thicker than the trunk, and then insert the trunk about 1 cm. Branching cuttings can be directly inserted into the sand for half the length, and the rows of branches on the cuttings are opposite, with the row spacing of 5×1 cm. This density is determined according to the length of the branches and the thickness of the cuttings I use. It is advisable that the side sticks do not cover each other, and the cuttings can be changed according to different conditions. Shade after transplanting, no need to water on the same day, spray the transplanting bed thoroughly the next day, and then carry out general cutting management. Do not water immediately after cutting, in order to make rooting agent fully penetrate into cutting tissue.
4. Re-treatment of rooting agent
In October, make 1ppm solution with ABT rooting powder No.2 or No.3, spray it through the bed, and then spray the cuttings with clear water until water drops on the sand surface. Later, don't spray water until the sand surface turns white. At this time, callus begins to form, and the lower part of the cuttings absorbs enough water, but the evaporation power of the leaves is not very strong. Too much watering will lead to the cuttings rotting.
5. Topdressing and rejuvenation
After one and a half months, the leaves of cuttings can be sprayed with .2% potassium dioxide phosphate and .2% urea solution every other day at about 5 pm, and the shade can be uncovered. At the same time, the foliar surface will be sprayed at about 12 noon every day to the extent that water drops flow downwards. In case of high temperature season in July, spraying will be repeated at about 2 pm, and fertilization will continue. After about two and a half months, roots with a length of 1 ~ 2 cm can be produced. At this time, except that the temperature is too high at noon, it is not necessary to spray water to whiten the inserted bed, and fertilization is still uninterrupted the next day. Later, the decomposed cake fertilizer was applied intermittently. After three and a half months, it is planted in the transplanting bed according to the general management. It can be mixed with a small amount of urea or compound fertilizer by applying thin cake fertilizer, and then transplanted into the pot in autumn. The survival rate of the pot is as high as 1%, and it grows rapidly, because the rooting length is generally more than 1 cm. Cutting with trunk in spring can grow a layer of verticillate branches in autumn, and cutting with lateral branches (not the top) can grow terminal buds of 2 ~ 4 cm. After the lateral branches are cut into pots, they should be supported by vertical sticks to prevent the new technology from falling down because it can't bear the weight.
This cutting method has the following characteristics: (1) It is easy to obtain materials and has a large amount of reproduction, which can be combined with the shaping of high-Nanyang shirts. Both trunk and lateral branches can be used. (2) Removing the stem leaves can prevent the cuttings from rotting, which is the key to improve the survival rate. (3) Two rooting agent treatments can take root more than one month earlier than normal cutting. (4) The cuttings didn't take root for one and a half months, and the shade was removed in advance, which was to prepare for fertilizing the cuttings in the future, because it could enhance the resistance of cuttings and accumulate nutrients through photosynthesis. (5) Potting in the morning is to shorten the slow seedling stage after potting. (6) The side branches can be bent by iron wire and then cut, and the bonsai can be made after survival, and the survival rate will not be affected if the side branches are cut longer.
application scope: Aralia elata is a beautiful landscape tree, which can be planted alone, in rows or with trees. It can also be used as a background tree for large sculptures or scenic buildings. Aralia elata is also a precious indoor potted ornamental tree species, which is very elegant for the decoration of the hall environment. Potted seedlings are suitable for the decoration of living room, corridor and study in general families; It can also be used to arrange various forms of venues and exhibition halls; It can also be used as a gift for relatives and friends to open a business and move.
Aralia elata is an important timber tree species in Australia and South Africa, which can be used for buildings, appliances and furniture.