How to plant tree-like roses
For most women, please see the detailed introduction below for the knowledge of flowers and plants on how to grow tree-like roses. How to plant tree-like roses 1. Selection and cultivation of root systems: tree-like roses require developed lateral roots and fibrous roots, which can ensure sufficient absorption capacity and make the tree grow vigorously, and the fibrous roots are developed, making it easy to survive after transplanting. White thorny roses used as rootstock of rose trees can be propagated by sowing and cutting. When sowing and breeding is used, transplanting seedlings must be carried out during the 3-5 leaf period. At this time, the main root must be cut off to promote the development of lateral roots. Otherwise, the seedlings are prone to have long main roots and weak lateral roots, which is not conducive to the cultivation of rose trees.
2. The medium anvil should be selected from fertile loam soil with deep soil to promote the formation of strong root systems. During the cultivation process, the sprouts should be removed in time.
3. Selection, grafting and cultivation of interstock: The interstock is the trunk of a rose tree. Varieties with hard wood and easy trunk formation should be selected. At present, Beijing should give priority to Citi chinensis. Some distant hybrids bred by Huang Shanwu of China Academy of Agricultural Sciences are very promising midstocks in the production of "rose trees" in my country. The intermediate stock selected must have a good affinity with both the base stock and the rose variety. For grafting base stock and intermediate stock, bud grafting is generally used abroad. That is, use a bud grafting machine (actually a template knife) to cut off the buds with xylem on the scion, then cut off the same piece on the rootstock, place the buds in the incision of the rootstock, and wrap them tightly with a plastic strip.
The methods currently used can be roughly divided into the following types, namely T-shaped bud grafting, large square bud grafting and xylem bud grafting.
After the intermediate anvil is activated, if it grows vigorously after germination and has a growth height of more than 2 meters in that year, a bamboo pole can be attached to its edge and tied to the pole in the second year. An X-shaped buckle can be used when binding to avoid affecting the thickening growth; If the growth is too weak that year, you can leave 1 -2 buds in the second year, cut off the rest, and add a supporting pole when it reaches a height of more than 2 meters. The row spacing of the live interstocks should be between 2 and 3 meters to ensure that they have enough nutritious area and promote rapid growth.
The middle seedlings planted and supported by poles should be picked at a height of about 2 meters, leaving 3-5 new shoots under the picking mouth, and all sprouts below should be removed. During this period, the first is to strengthen water and fertilizer management, the second is to strengthen pest control, and the third is to maintain the vigorous growth of new shoots left at the upper end to promote the rapid thickening of the trunk. At this stage, it generally takes about three years to cultivate, and its dry thickness reaches about 5 centimeters. At the time, the thickness and hardness of the trunk have basically reached the ability to stand upright and support the crown, so it can be used as a rose rootstock for a second grafting.
4. Selection and grafting method of rose tree varieties: The variety used as a rose tree has the following characteristics: it has strong growth potential and branching ability, has high cold resistance, drought resistance, and stress resistance, and has strong and long-term flower resistance. If several flower colors are to be cultivated on the same plant, the growth potential and branching power among the selected varieties should be basically the same, and the flower size and flower type should be basically similar to avoid affecting the ornamental value. There are two grafting methods for rose trees. One is direct. You can saws off the crown of the middle anvil at a dry height of about 1.8 meters, and connect 2-4 scions by peeling or splitting. The ears are 6-8 centimeters long, and each ear leaves 3-4 buds. You can seal the scion with wax, or you can wrap it into a bell mouth with plastic, add wet soil in the middle, seal the mouth to moisturize, and open it after survival. The second is to adopt the bud grafting method, which can leave 3-5 new shoots on the middle anvil crown for bud grafting. The method is the same as for base anvil bud grafting.
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