Planting of Pinus sylvestris species and related technical guidance
(a) nursery: 1. Seed germination treatment: Soak the seeds with 0.3% potassium permanganate solution for several minutes to sterilize them, remove them with clean water, and soak them in warm water of 30°C for a day and night. Remove the seeds and dry them slightly. Mix the seeds with sand and mix them by volume 1:2. Maintain moisture content as 60% of the saturated water capacity, species, sand temperature is 15-20 °C, turn one or two times a day, germination more than 10 days, when the split mouth up to 5% can be sown. 2, site preparation, bed, fertilization: Pinus sylvestris does not require high soil fertility, but strict requirements for hydrothermal conditions and ventilation conditions. When the bed is made, 60% of the total basal fertilizer is applied, the bed height is 15 cm, the width is 100 cm, and the length is not limited. The bed is flat and there is no soil in the bed. Low beds are available in areas with low rainfall, dry weather, and large winds. 3, sowing: The soil should be disinfected before sowing in spring. 40-60 ml per square meter of industrial sulfuric acid, add 6 liters of water or slightly more, irrigation bed, to be uniform, so that the soil moist 3 cm, after a week sowing. After sowing, the surface of the cover soil was sprayed with herbicidal ether, 0.5-1 grams per square meter herbicide. In the area of ​​prosperous areas or sandy areas, grass should be covered to keep the soil moisture and control the temperature of the bed. 4, seedling management: After the emergence of the seedlings to prevent the disease, spray once a week 0.5-1.0% of the Jur liquid, until late June. Before the end of the fast growth period, pay attention to irrigation, and grasp the principle of less time and more in the early stage. 5, seedlings cover soil winter: In order to prevent the seedlings from losing water during the freezing of the soil, the soil should be broken before the soil is about to freeze in the autumn, covering the seedbeds and burying the seedlings as degrees. Hunchun can be removed by freezing in mid-April. 6, lifting: Scotch pine is best followed in the spring. If there is a full cellar planting condition, it can also be made in spring. If conditions allow, the root can take some soil, do not shoot or shoot, keep the roots of the seedlings intact. In addition, in the aspects of storage, packaging, transportation, and planting of seedlings, care must be taken to protect the root system and prevent wind and sun, otherwise it will seriously affect the survival rate of afforestation. 7, for the cultivation of bed seedlings: Usually two years in the nursery. The second year of bed-breeding, changing bed density is generally 200-220 per square meter. After the bed change, we must carefully manage the fields and promote the seedlings and seedlings. Medical Silicone Pad,Medical Silicone Mat,Medical Silicone Pin Mat,Medical Grade Silicone Pads GUANGDONG JIANGMEN RONGHAI MEDICAL TECHNOLOGY CO.,LTD , https://www.kimaomedical.com
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