With the acceleration of the forestry ecological greening process and the start of new rural construction, the seedling industry has developed rapidly. At present, focusing on the adjustment of the planting structure of seedlings and increasing the cultivation of large-scale green seedlings is a new approach to the gradual development of regional production and intensive management. Large size seedlings market advantage Taking cultivation of 6-year old Fatong green seedlings as an example, the average DBH is 10 cm in a managerial period (that is, from the seedlings to the growing time), according to the market price of 90 yuan per plant, the plant spacing is 23 meters, and 111 mu plants are planted. According to 80% of large-scale seedlings produced by Puyuan, the output value per mu is 11180% 90=7992 yuan, and the output value of small-scale seedlings of 20% output is 11120% 30=666 yuan. The combined output of the two mu is 8658 yuan, and the annual mu output value is 1443. yuan. Compared with the same site conditions and the same intensive operating conditions, in a 6-year managerial period, poplar trees with an average DBH of 16 cm and a height of 16 meters were cultivated, and the annual output per mu was 440 yuan. It can be seen that, compared with the two, the cultivation of large-scale green seedlings per year is 3.3 times higher than the production of poplars. Large-scale nursery stock cultivation should be multi-pronged Lots of large-scale green seedlings are generally used for plots over 6 years to reach the nursery to achieve straight-through, crown-forming, and neat seedlings, and to exert the best afforestation and beautification effects. Therefore, we should choose to grow in the thick soil layer, loose soil structure, and convenient traffic. Tree species selection Based on the current market demand and the current supply and demand of nursery stocks, it is necessary to cultivate native tree species. Density design According to the growth observation of different afforestation densities, the reasonable density for cultivating large-scale green seedlings is 23 meters. Management measures and business models Cultivate large-scale green seedlings Starting from seedlings with a rice diameter of 1-2 cm at the beginning, promote directional seedlings, and adopt high-standard and intensive management models in order to achieve high quality, high yield, and efficiency. Limbs Rehabilitation Device,Rehabilitation Instrument,Rehabilitation Training Bed,Electric Rehabilitation Bed Puyang Degren Medical Equipment Co., Ltd. , https://www.degrenyuwei.com