Dragon and cypress are used to asexual reproduction, and the methods include docking, branch grafting, cutting and layering. , each has its own advantages, which are described as follows: 1, the grafting survival rate is high and the seedlings grow fast. The disadvantage is that the number of breeding is limited, and the procedures and management are more troublesome. Because the mother tree is tall, it is even more inconvenient to operate, but this method can still be propagated in small quantities. ? Sabina vulgaris, Sabina vulgaris, Platycladus orientalis and Platycladus orientalis can be used as rootstocks. It can be performed in 3-4 months, and it can be cut off and transplanted from the mother when it is completely healed in August-September. For specific operation, please refer to the docking chapter in the book of seedlings and flowers. ? 2. Grafting in early spring: In early spring, in February, 2-year-old Platycladus orientalis was used as rootstock, and 1-2-year-old branches with a length of 5- 10 cm were selected as scions. Take off the 2-3 cm lower needle, make a straight cut with a length of 2-3 cm, and make a diagonal cut on the reverse side with a length of 2-3 cm. Rootstock can be cut from the grafting point, and then directly from one side of the cross section, 2-3 cm long, pay attention to the xylem. Then insert the cut scion into the rootstock, with the cambered layers on one side aligned with each other, and then tie the joint firmly with plastic film. In order to make the scion die without losing water before survival, a small plastic bag can be put on the scion. About 2 months later, the terminal bud of the wind scion germinated, which proved that the wound had healed well, and the bagging could be removed for normal management. ? In addition, the skin can be torn and spliced during the growing period. The grafting survival rate of this method is also very high. Sabina vulgaris has few diseases. In addition to the above-mentioned pear scab, purple feather disease is also prone to occur when the substrate of cutting seedbed is unclean or reused, which can be controlled according to the above methods. The marsupial moth is a common pest, so it should be sprayed with 1000 times 98% crystal trichlorfon when the larvae have not spread in early June. Longbai likes deep and fertile soil and requires good drainage, so wet waterlogging is strictly prohibited, otherwise it will cause yellow leaves and poor growth. It grows slowly when it is young and grows faster after 3-4 years. When the trunk is 3 meters high, its growth is weakened by Zhejiang. Long Bai glanced at Yang. Where the drainage is good and the soil layer is deep, it grows well. Strong drought tolerance, as long as the rhizosphere or seedbed is covered in summer and autumn, it is generally not watered to fight drought and rarely dies, but in order to promote growth, the annual growth can be increased by 50 cm by adding fertilizer and water frequently. The main branch of the cypress is very malleable, but in the south of the Yangtze River, it does not spread outward but rotates upward around the main branch, and the side branches are closely arranged. The whole tree is supported by Wan Ru Shuanglong, so the branches below should be properly preserved, and cannot be cut off or damaged at will, otherwise hanging seedlings will be formed, which will do great harm to the appearance, so it is generally not pruned and allowed to grow naturally. Some cypress trees not only naturally grow into cones, but also roll up animal images such as dragons, horses, lions and elephants. Some of them are pruned into spheres, drums and hemispheres and planted in single rows or groups in the garden. Some species are planted in hedgerows and trimmed into straight ridges after shaping, which can show their low, plump, meticulous and fine. The lateral branches of cypress are twisted and spiral, and they are born with a unique style.