Most varieties of Hongfeng are red in the new leaf stage, gradually turn green in summer, and then turn red after frost. In order to make the red maple turn red before and after the National Day, we can use the method of picking leaves to promote red and force new leaves to sprout.
Specific methods: all leaves and petioles on the plant were removed in mid-August. Put it in a sunny place, follow the manure 1-2 times, water it 1 time every day, keep the basin soil moist, and spray water on the branches appropriately. After about half a month, axillary buds will sprout one after another and open into small red leaves. In late September, the whole leaves are ripe and the whole tree is red, just in time for the National Day flower viewing.
breeding method
Grafting propagation method
Acer truncatum can be propagated by grafting, with 2-4-year-old Acer truncatum seedlings as rootstocks. Cutting should be carried out in March-April, and the height of rootstock can be determined as required. Docking in rainy season from May to June, and cutting after defoliation in autumn. This method is only used for a few rare varieties.
Bud grafting is the most common application, and the best time is from late May to late June and from late August to late September after autumn. Early summer is the peak period of branch growth. The full buds on the sunny short branches of Hongfeng were used as grafting buds, and the petiole was 65438±0cm long.
The temperature is getting higher and higher after grafting. Although the grafting is wrapped with plastic tape, the buds and petioles are still exposed. In addition, red maple has thin cortex and small grafted buds. Therefore, it is necessary to spray moisturizing regularly after pressing to improve the survival rate. This is basically the case for budding after autumn. After a week of grafting, if the petiole falls off as soon as it touches, it means it has survived, otherwise it should be patched.
Cutting propagation of Acer truncatum
Red maple can also be propagated by cutting, especially when making small bonsai or potted plants. Cuttings are usually carried out in the rainy season from June to July. Select the vigorous branches of that year as cuttings, about 20 cm long, quickly dip 1000ppm NAA powder and insert them into the matrix of vermiculite or perlite and pond mud.
Pay attention to shading in the future; Spray water for moisturizing, and it can take root after about 1 month. 2-year-old branches can also take root with high survival rate if there is full light spraying condition. Shading should be done after transplantation, and after half a month, sunlight can be gradually accepted, and water and fertilizer management should be strengthened.
Extended data:
China Hongfeng, also known as Hongye Hairless Maple, is a small deciduous tree with a height of 9 meters. Its branches are smooth and slender, the single leaf is 5-7-lobed, palmately alternate, the leaves are oblong to lanceolate, the leaf margin has double serrations, and the young branches, petioles and flower stalks are all red. Purple flowers, terminal umbels, flowering in May. Elaeagnus mollis is hairless and ripens in 10 month. ?
Hongfeng likes light, avoids exposure to the scorching sun, likes warm and humid climate and deep fertile soil, is not tolerant of waterlogging, is slightly drought-resistant and cold-resistant, and can overwinter in most parts of China.
The biggest feature of China Hongfeng is that its autumn color changes from normal green to red. In ancient times, the frost leaves were as red as fire in October and as red as flowers in February. However, most of China Hongfeng are planted seedlings, which have great variability, and the discoloration effect is obviously different with regional differences.
Even the differences between different seedlings in the same place are great. Moreover, the color change is not very bright, the red color is not very positive, and there are always variegated colors, so the viewing effect is average.
References:
Baidu Encyclopedia-Hongfeng (Acer plant Hongfeng)