I. Cultivation techniques:

1. Prepare the soil and make a bed: before preparing the soil, apply 50 kilograms of ferrous sulfate, then turn it over 20 centimeters with a shovel, and then level the bed, with a width of 1.5 meters and a length of 20-50 meters, ridging and pressing 60.

2. Dig a pit to plant seedlings: when planting Chinese pine, fix a row in the center of each border, with a pit of 30×30 cm and leave 4-5 cm of loose soil below. If it is a soil ball wrapped in straw rope, it can't be untied; If it is packed with nylon rope and plastic, it must be untied to avoid the consequences of planting dead seedlings. After planting seedlings, level the border and water it. If the seedling leaves turn yellow, it is iron deficiency, and ferrous sulfate should be applied.

Second, the cultivation and management:

1. After planting Pinus tabulaeformis, water should be applied twice a week, then the soil should be loosened to keep moisture, and water should be poured again in early May. After that, if the weather is not dry, fertilizer can be applied once in June and ferrous sulfate can be applied once in August. Dig a hole in the edge of the plant and apply it. Weeding can be done once every 20 days, which requires careful and meticulous work. Generally, it is as deep as 4 to 5 cm, requiring even weeding, no loosening and clean weeding.

2. Plastic head change of Pinus tabulaeformis: In the management process, we should pay attention to plastic head change. During the growth of Pinus tabulaeformis, some branches are heavy, and the head will be damaged or weak. You must use strong edge skills to pull and tie, which will become a central advantage in the future. This process is a head change.

① Chinese pine shaping: 1. Sparse and too dense branches; 2. Take back branches that are too long; 3. Supplement some branches with missing crowns. Plastic pruning plastic pruning is a necessary management technology to ensure the appearance, neatness, consistency and good growth of Chinese pine trees, and will not affect the construction of urban public welfare facilities and people's lives. What measures should be taken depends on the specific purpose, location, space occupation and artistic modeling of greening. Generally, it is inseparable from removing redundant branches, pests and diseases, and loosening long branches with inappropriate growth direction. Generally speaking, for the tower-shaped tree property of Pinus tabulaeformis, it is advisable to ensure that the advantages of the central trunk and the top are low, and to use techniques such as branch pulling and coring to shape technical branches.

2. Fertilizer and water management Fertilizer and water management is an important measure to ensure the normal growth of plants and resist pests and diseases. During the 65,438+0 years after transplantation, the growing season was watered 65,438+0 times every two months on average. When fertilizing, plants with a height of less than 3.5m should be fertilized in trays, and 1a should be fertilized 2-3 times, especially after thawing in early spring, vigorous spring shoots and autumn shoots. For plants over 3.5m in height, the above fertilization method can be used within1~ 2 years after survival, and then it is more suitable to fertilize outside the roots. The fertilization tool can be a motorized sprayer, which can be sprayed 1 time a month in the growing season.

(3) Prevention and control of pests and diseases The prevention and control of pests and diseases of Pinus tabulaeformis should follow the principle of "timely discovery, active prevention and treatment, and slight treatment". When pests and diseases are found in the growing season, drug control should be organized in time. In winter, the trunk should be painted white or sprayed with sulfur mixture to eliminate the eggs and pupae on the trunk.