In summer, temperatures are high, rainfall is high, humidity is high, and diseases and insect pests are more frequent. When oleanders are cut, the following issues need to be noted: 1. Selection of seedbeds and treatment of seedbeds should be as leeward as possible, without accumulation of water, soil diseases, pests There are few weeds, and there is a lot of fertility and manageable land as a seedbed. The general seedbed should be east-west, and no matter which method is used for cutting seedlings, it must be carefully prepared. The depth of general arable land should be 25 to 30 centimeters, the bed is 1 meter wide, the length is suitable, and the width of the trail is 50 centimeters. When the soil is heavy, sand may be properly mixed and the soil may be disinfected. Second, the choice of cuttings and processing 1. Selection of the ear as mining mother strains, to have good quality, robust growth, no pests and other conditions. In the same plant, the cuttings generally have to select the branches with the upper part of the sun in the middle of the year, and the internodes are short, the branches and leaves are thick, and the buds are full. On the same branch, the hard branch is generally selected for the middle and lower branches, and the clipping must be smooth, the upper end cut into a horizontal plane, and the lower end shear cut into a slope. When cutting branches, select thick branches with a diameter of 1 to 1.5 cm. The length of the cuttings is 15 to 20 cm. The cuttings must have two or three buds. The upper cut should be about 1.5 cm away from the buds to remove the lower leaves. When pruning branches, red and white color varieties are separated. 2. The cutting treatment will separate the cutting flower color varieties, so that with cutting, with a short cut, with cuttings. In order to improve the cutting survival rate, dozens of cuttings are bundled neatly in the cutting process, using ABT rooting powder No. 1 100ppm soaking strips for 2 to 8 hours, and ABT 6 No. 30 to 100ppm soaking strips for 1 to 8 hours. Under normal circumstances, 1 gram of rooting powder can handle 3000 cuttings. 3. Cutting methods and density Before cutting, soil disinfection should be carried out. Fill the bed with enough water. The treated cuttings were cut in rows of 55 cm. Attention should be paid to the upper and lower ends of the cuttings, and they must not be inserted backwards. The cuttings must be brought into close contact with the soil and the scratches on the cuts below the cuttings must be prevented. For this purpose, iron bars are used to perforate first in the insertion bed and then to insert the cuttings, but the penetration depth is slightly shallower than the length of the cuttings so that the cuttings can be inserted into the soil. The depth of cuttings is generally preferred to expose one or two buds above the ground, and the markings and records are made after cutting. 4. Post-insertion management The temperature required for rooting of most flower cuttings is 20°C to 25°C, relative humidity 80% to 85%, and rooting is usually 15 to 20 days after plugging. Be sure to spray enough water after the cuttings to make the soil and cuttings in close contact. To prevent high temperatures at noon, it is best to shade. Spray water once in the morning and in the evening according to the soil moisture status, but the amount of water spray should not be excessive, otherwise it will affect the root healing of cuttings. To prevent germs from occurring, spray a bactericidal liquid once every 10 days or so. The second year of transplanting.