1. How many pentagram are planted per mu?
How many five-pointed maples are planted in an acre of land mainly depends on the size of saplings. Generally, the planting density of five-pointed maple below 3 cm is about 1.5 square meters, and about 400 plants are planted per mu. The planting density of five-pointed maple should not be too thin or too dense. It can be planted according to the plant spacing ratio of 1 m and 1.5 m, 0.7 m and 2 m, 1 m and 2 m. If other trees are to be mixed, it can be planted according to the ratio of 2? 2 meters or 2? The planting density is 2.5 meters.
Second, planting techniques of Acer truncatum Bunge
1, land selection and land preparation
Choose sandy loam with flat terrain, deep soil layer, loose soil and good drainage as the nursery for planting. Dig the soil 25-30 cm in autumn before planting, rake it in spring, and apply 5000 kg base fertilizer per mu to level the soil.
2. Sowing method
Seeds of Acer mono need to be piled up in wet sand to accelerate germination, and a sowing ditch with a depth of 4-5 cm should be dug in the nursery, with a sowing width of 4-5 cm and a sowing amount of 20-25 kg per mu. After sowing, the soil is compacted and kept moist. After sowing, the seeds of Acer mono germinate for 2-3 weeks. After 3 weeks, the seeds grow real leaves and start to grow seedlings. Pay attention to watering and fertilizing in the management process, loosen the soil and weed in time, and keep the bed surface moist, loose, free from weeds and pests.
3. Transplanting and planting
The best transplanting time of Acer truncatum is 15 days after defoliation and before germination in the next year. Transplanted plots need to be deeply fertilized in advance, then tree holes are dug and a layer of organic fertilizer is laid at the bottom of the tree holes. Soil balls should be used for seedling transplantation of Acer truncatum, and the dressing of the soil balls should be removed, and the seedlings should be put into the tree hole, then filled with soil and watered in time after transplantation. If the trunk of seedlings is too high, it should be fixed and supported to prevent tilting.
The above is the introduction of how many five-pointed maples are planted per mu and their planting techniques. The cultivation method of five-pointed maple is not difficult. One thing you need to remember is the quality of seedlings. At present, there is a great demand for high-quality seedlings in greening projects. Good seedlings are easier to go to the project and will gain a good reputation, which plays a key role in the development of nurseries in the later period.