What is the spacing between forsythia transplanted plants and rows?
As a woody plant with both medicinal and ornamental value, the survival rate of forsythia transplantation directly affects its growth trend and landscape effect. Scientific mastery of plant spacing and old pile transplanting techniques is the key to cultivating high-quality forsythia plants. This paper systematically analyzes the core technology of forsythia transplantation from planting density to modeling transplanting. Scientific regulation of forsythia planting density, plant spacing parameters, standard seedling transplantation recommends using the golden ratio of 150×200 cm. This spacing can not only ensure sufficient light, but also reserve space for root expansion. The size of the transplant hole needs to be 30-40 cm square, the width of the nursery area should be 1 meter, and the length should be flexibly adjusted according to the terrain. Factors affecting planting density Actual planting should be adjusted in conjunction with soil fertility: poor plots can be appropriately reduced to 120×180 cm, and fertile plots can be increased to 180×220 cm. It is recommended to adopt a zigzag layout for mountain planting to improve land utilization. The coordinated management of water and fertilizer in the maintenance and management system after continuous planting adopts the principle of "moistening the soil without accumulating water." Water is watered every time 5-7 days in spring and autumn, and every time 3 days in summer and is matched with sunshade nets. The fertilization plan is divided according to the growth period: nitrogen fertilizer is applied to promote branches and leaves during the germination period, phosphorus and potassium fertilizers are added before flowering, and organic fertilizer is added after fruit picking. Shaping trimming technology is carried out in March every year, retaining 3-5 main branches to form an umbrella-shaped skeleton. Cut off long branches and cross branches in time to keep the crown transparent. The trimming tools need to be disinfected with 75% alcohol and the incision should be coated with healing agent. The best transplanting time for the core technology of transplanting old forsythia piles is from late March to mid-April, when the tree sap begins to flow but does not fully germinate, and the temperature stabilizes at 10-15℃. Cloudy or cloudy weather is the first choice and avoid direct light. The diameter of the soil balls with the soil ball transplantation technology is excavated at 6-8 times the ground diameter and wrapped tightly with straw ropes. Fix the soil balls during transportation to prevent them from becoming loose, and soak them in rooting powder solution before planting. Build a shaded shed after planting to maintain 60% light transmittance. Benefit analysis of forsythia transplantation Reasonable close planting can increase the yield per mu by 30%, and standardized transplanting of old piles shortens the bonsai forming period to 2-3 years. Combined with modern horticultural technology, forsythia can not only be used as medicinal plant cultivation, but also create high-value-added landscape bonsai.