The multi-color rose of the tree-like plant is a new type of rose that is produced by horticultural means from an upright trunk. The tree-shaped multi-color rosewood rootstock has strong dryness, and the scion has beautiful and changeable shape. It can be arbitrarily trimmed and shaped, and can be grafted with multiple varieties of flowers. The number of flowers and the variety of flowers can form a beautiful landscape. The three-dimensional sense has higher ornamental value and aesthetic value. In order to meet the needs of people's aesthetic consciousness and the improvement of viewing level, since 2000, the author has explored and practiced the cultivation of tree-like multi-color rose, and obtained good results. The cultivation techniques are summarized as follows.

1 Selection and cultivation of rootstocks

1.1 Selection of rootstocks

1.1.1 Selection of the base anvil. Select the multi-pollen group and the non-thorny rose that are robust and disease-free, with a diameter of 0.7cm or more as the rootstock. The rootstock can be used for seedlings, and can also be cultivated by cutting, layering, and ramets. The cultivation of raw rose should strengthen the management of fertilizer and water, and combine the topping measures to accelerate the growth of stems. At the same time, it is best to pour water once a week before grafting to make it grow vigorously, and the sap flows faster, which is good for graft healing.

1.1.2 Selection of intermediate anvil. Choose young or middle-aged plants with excellent dryness, strong growth, many branches, quick crown extension, good crown-shaped tea, rose, and rose, and take the strong growth of the middle part and the full and full buds. The annual branches are used as scions. The branches cut during winter pruning can be stored in wet sand for storage, and can also be used with mining.

1.2 grafting

1.2.1 Grafting time. Grafting time varies from region to region, and different years in the same region are affected by climatic factors. It is better to start the flow of rootstock sap without sprouting.

1.2.2 Grafting method. Take the bud with xylem as an example, select the smooth part of the rootstock, then cut a knife from top to bottom, the knife edge is deep to the xylem, and then 2cm above the incision, from top to bottom with a small amount of xylem, cut down, Lower knife edge. By cutting the upper and lower knives, a piece of rootstock about 2 cm long can be taken. The cutting of the scion is the same as the cutting of the rootstock, first cutting down the lower part of the bud bud and then top-down at the upper part of the bud. With a small amount of xylem cut down to the edge of the knife, the two edges meet, the buds can be removed, the buds are about 2cm long, and the width depends on the thickness of the rootstock and the scion. It is required that the size of the scion buds is substantially the same as that of the rootstock. The upper and lower sides of the interface are aligned and then wrapped. The buds with a width of 8 cm and a length of 20 cm and a good elasticity are entangled at the same time (the buds on the buds are entangled with a single layer of mulch, and the rest are entangled with a multilayer mulch). It has been proven for many years that the bud can break the membrane by itself and grow well.

1.3 Cultivation

1.3.1 The patch is loosened. Generally, the survival rate is checked about 10 days after the connection. If the bud has sprouted or the buds are bright green, it indicates that it has survived, otherwise it will not survive. If the time is allowed to survive, it can be supplemented. When the bud length is more than 20cm, the binding is released in time, otherwise it will easily form a “bee waist”, which will affect the thickening and heightening of the new branches after the rootstock and the buds survive.

1.3.2 Culture the trunk. The rootstock sprouting should be wiped out in time to ensure the normal growth of the buds. When the trunk grows to a certain height, flower buds appear, and high growth is suspended. At this time, the buds should be taken and trimmed, and the two sections below the main stem should be cut; the side branches growing under the cuts should be selected, and the top bud should be selected to allow it to grow upright, and the rest should be folded or twisted. The wound is controlled to grow, and when the uppermost bud grows into a strong trunk, the lower side branches are all cut off. When the trunk grows to the required height (150cm), only the buds are not pruned, and the main branches, side branches and side branches are germinated.

2 selection of scion

Grafting multiple flower-shaped tree-shaped roses on the trunk (intermediate anvil), which constitutes competition between nutrients, sunlight, space, etc. in the scion, and then forms a vicious circle. Finally, the superior scion is longer and stronger, while the weaker Marriage grafting is getting weaker and weaker, causing long-term malnutrition, and finally the growth space is occupied. Therefore, multi-color rose cultivation should be carried out on the same tree-like rose. When selecting the scion, pay attention to the growth strength of the selected varieties, so that the two can heal faster and recover, and then the normal physiological metabolism of the tree can be carried out. In short, rationally arranging the varieties according to the characteristics of the varieties, so that the tree-shaped rose not only has higher ornamental value, but also enables the scions to coexist for a long time and grow robustly.

3 grafting

It adopts the bud with xylem, and then cuts the anvil 0.5cm above the bud. Each plant is grafted with more than 3 varieties, red, yellow, white, orange, pink, blue, green, double color and complex color. Check the survival rate about 10d after picking up, and make up the unfilled buds in time. When the buds are longer than 20cm, they are loosened.

4 graft management

4.1 Establishing a support column

The multi-color rose of the same plant in the early stage of grafting, the crown is dry and thin, not resistant to wind; the new xylem and the old xylem have not yet merged, the growth is not strong and the graft grafting load is poor, so it is easy to break when it meets the wind and rain. Establish support columns in time. The upper end of the support column is about 7cm away from the main branch, and the diameter is more than 4cm thick.

It is necessary to prevent corrosion, and the tightness of the binding rope should be appropriate, and it is too tight to damage the trunk.

4.2 Soil and fertilizer management

After the soil is thawed, after the rain, and after the irrigation, weeding and weeding in a timely manner, fertilize twice a year, the first time before the defoliation and after freezing, the plant will apply fully decomposed chicken manure 8kg; the second time in the first round after 7th, The plant was subjected to decomposing human excrement urine (3000 kg of human excrement, 50 kg of cake fertilizer, fermented and decomposed after water) 5 kg. In combination with pest control, after the end of April, spray 0.3% potassium dihydrogen phosphate + 0.2% urea solution and PBO trace element foliar fertilizer 250 times solution every 15~20d. Water is drained in time after the rain, and each time the fertilization is carried out according to the soil moisture.

4.3 plastic trim

The tree shape with no main head is adopted. After molding, the height of the tree is about 190cm and the height of the trunk is 130cm. The whole tree has 4~5 main branches, 8~10 side branches and 16~20 side branches. The first year of the growing season pruning: after the buds survive, the new buds are removed when the buds are removed. The lateral branches are promoted, and the flower buds on the side branches are removed to promote the accessory side branches, and the flower buds on the accessory side branches are retained to allow flowering. After the flowering, the residual flowers were cut off from the tip of the second piece of the small compound leaf axillary buds 0.5 cm above. Body-sleeping: cut off the branches of the disease, the erect branches, the branches across the middle branches, the cross branches, the overlapping branches and the tops of the tips. For the branches of the skeleton, 2~8 axillary buds are short-cut, and the other branches have growth space, and according to the size of the growth space, 2~4 axillary buds are left short. The second year of the growing season pruning: continue to cut off the residual flowers, and remove the inward branches, light blocking branches and tip lychees in the crown. Pick up the erect branches with space in the crown and promote branching. Branches without space take branches or twists to make the branches parallel or droop to occupy a certain space. The trimming period of the body sleep period is the same as in the first year. Through 2 years of plastic trimming, the natural tree with no main head is basically formed in the same color multi-color rose. This layout distributes the branches of each main branch, side branch, side branch and crown evenly above, below and before. , rear, left, and right spaces. Each branch can make full use of sunlight, rain and air, and it has room for full development.

5 pest control

Local pests and diseases mainly include black spot, powdery mildew, aphids, red spiders, and scales. After pruning during the body sleep period, waste such as litter and weeds should be removed and burned. Spray 4B stone sulphur mixture once before germination; alternately spray 50% carbendazim 800 times solution, 70% methyl thiophanate 1000 times solution every 10~15 days in the growing season, and spray 2~3 times, can prevent and cure Black spot, powdery mildew. After April 15th, every 10~15d, spray 10 times imidacloprid WP 3000 times liquid + 1% avermectin emulsifiable concentrate 4000 times solution, 3.5% kungfu emulsifiable concentrate 3000 times solution, even spray 2~3 times It can prevent the damage of mites, red spiders, and scales.

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