When the shrub and shrub flower is asexually propagated, the method of cutting and cutting is not easy to take root, and seedlings and seedlings often have variations in the characteristics of the seedlings and cannot maintain the characteristics of the original varieties. Therefore, the flowers of the Joe shrubs are often multiplied by grafting. Grafting refers to cutting a part of a branch or a leaf of a plant body and grafting it onto another plant body, so that both become a new plant. The branches or buds on the cut-off plants are called scions, and the grafted plants are called rootstocks. 1. Advantages of Grafting The grafted plants have growth and development and flowering results and can maintain the original variety traits. Grafting seedlings grow faster than cutting seedlings and seedlings. Strong ability to adapt to bad environment. Plants have strong resistance to pests and diseases. 2. Difficulties in grafting survival From the perspective of plant taxonomy, the closer the phylogenetic relationship is, the easier the grafting of plants is, which is caused by the different structure of the plant tissues. The survival of grafting depends on the degree of healing of callus formation between the rootstock and the scion noodles. After grafting, the callus of the anvil and ear cuttings is formed quickly, and the plants with a large amount of formation are likely to survive. On the contrary, they are difficult to survive. Graft survival means that the cutting plane forming layers of the rootstock and the scion are closely connected to each other, and the callus is differentiated from both the cutting planes, which is the regenerative ability of the plant itself. The developed callus is combined to make up voids, and the nutrients absorbed by the rootstock are transported to the scions through the callus. The scions sprout during the formation of the callus and begin to grow. Of course, the difficulty in grafting and survival is also influenced by the shape of the rootstock and the scion, external factors and operating techniques. 3. Grafting affinity Grafting affinity refers to the growth and development of a long-term seedling from a single plantlet to an adult tree. If graft survival, the tree vigor gradually weakens and die, or the grafting site is stunted by the wind and is considered to be incompatible. However, some incompatibility phenomena are manifested as tree dwarfing, yellowing of leaves, coarse and fine on the interface, or thinning on the interface. However, from the cultivation point of view, if the tree can develop normally after these phenomena, it can be used in garden cultivation or potting. 4. Selection of rootstocks Different types of flowerwoods use different rootstocks. Roses can be used as rootstocks for various roses such as Chinese rose; peaches, peaches, and peaches can be used as rootstocks; osmanthus can be used as rootstock; plums can be used as peaches, apricots, or plums for rootstocks; Western azaleas can be used as azaleas; Cherry can be used as rootstock; white orchids can be used as magnolia rootstock; camellia can be used wild tea as rootstock; bloom can be used as dogwood buds for rootstock; papaya can be used as paste stems jellyfish for rootstock. Some flower seeds must be treated with a low-humidity sandstone to break the dormancy period before they germinate, such as Chinese rose, rose, paste stem jellyfish, mountain peach, nectarine, plum, loquat plum, jellyfish fruit, shanjingzi, longevity peach, cherry hair and so on. The treatment of low-humidity sands is to wash the dried seeds after harvesting. A layer of wet sand or wet sand is buried in the pots with seeds, and the pots are placed in a cold room at 0-5°C. Sand time is prepared in advance according to the sowing date. 5. Grafting technique The grafting time is usually best when the top buds begin to sprout in early spring. The scion is an annual full-filled shoot that was cut off last fall and trimmed to a length of 6 to 10 centimeters with at least two full shoots on each section. In order to maintain moisture, cut snips are often cut with paraffin. When grafting, the scion is used to cut out the two symmetrical slants with different sizes. One incline is 1.5 to 2 cm in length and the other is 0.8 to 1 cm in length. The noodles must be flat, and it is best to cut into one knife. At the same time, about 20 centimeters around the natural ground of the rootstock, the rootstock is cut and a crack is cut down at the north side of the rootstock section, and is 2 to 2.4 centimeters deep. Then cut the long face of the scion inward and insert it into the incision in the rootstock. A side-forming layer must be aligned with the forming layer on one side of the rootstock. If the rootstock is similar to the scion, the layers formed on both sides are better aligned. It is best to use plastic strips tied. If you use a small plastic bag tied to the grafting better, to moisture evaporation.
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