"Birch Pine and Chinese Pine Seedlings for Seedlings with Cellular Seedlings"
Anhui Huaining Pengcheng Plastic Factory specializes in producing and selling honeycomb seedling bags. Contact: Wang Yang, 13074006281, 0556-4684697, 4685979.
Seedlings of Pinus bungeana have the advantages of saving seeds, convenient management and strong vitality of seedlings, but they also have the characteristics of seedling emergence and seedling growth. This article will describe in detail the seedling raising techniques of Pinus bungeana from seedbed soil preparation, seed treatment, seeding, seedling management, nursery and transplanting.
I. Selection, Site Preparation and Bedding
The nursery sites were selected to be well drained and flat, with sandy loam suitable. The pH of the soil is between 5 and 7. When selecting a nursery site, avoid the use of land that is endangered by pests, diseases, and birds and animals, and avoid using perennial potato, Solanaceae, and cruciferous vegetables.
Deep plowing should be carried out as early as possible in the fall so that weeds can be eliminated as soon as possible to reduce soil nutrient waste, and at the same time reduce pests, promote soil maturation, maintain moisture, and increase ground temperature. After the thawing in the spring, it is implemented as early as possible, so that it can be thoroughly penetrated, tamped, smashed, and smashed.
There are three kinds of seedbeds: high beds, flat beds and low beds. They should be determined by the local climatic conditions and the water conditions and topography of the nursery. The direction should be north-south. Take the flat bed as an example: the bed width is 1m to 1.2m, the length should be conducive to management work, generally about 20 meters, about 40 centimeters of trails; the bedside is surrounded by bricks, height 12 centimeters, after the brick outside the concrete, it is used , level and make a real bed.
II: Selection, Processing and Bagging of Substrates
If conditions allow, the substrate can be screened forest soil. In addition, it can also be formulated with 60% yellow heart soil, 30% humus soil, 10% sand, superphosphate (every 50 kilograms soil plus 1 kilogram).
Seedlings containers use honeycomb connected bottomless plastic containers. The container has a diameter of 4-12 cm and a height of 12-15 cm. Before bagging, open the container and spread it on the bed surface. Insert a 0.3 centimeter thick and smooth bamboo stick at the center of the four corners and four sides, fix it, and then fill it with soil. When loading soil, the nutrition bags should be closely arranged and closely adhered to the brick surface, and then disinfected with 3% ferrous sulfate solution to 1.8 liters per square meter.
III: Selection, disinfection, germination and sowing
Spring seeded the seeds collected in the autumn of last year. For those who have been in storage for more than one year, the viability test must be carried out. The seeds that lose their viability cannot be used. The selection of seeds can be done by washing.
To prevent diseases, seeds should be disinfected before sowing and soaked in 0.5% potassium permanganate solution for 2 hours or 40% formalin 300 times for 2 hours. Wash the seeds with water after disinfection.
Seed pine seeds have low germination rates and must be germinated before sowing. They are generally conducted 10 to 15 days before sowing. The method of "soybean sprouts" can be used, and the seed can be sown when more than one-third of the seeds are cracked.
Sowing is performed after the soil is thawed. Generally, the surface temperature reaches 10°C. 3 to 4 seeds per bag, 1 cm thick on the cover, water immediately after sowing.
Seedling management
1. Moisture management Keep the bed surface moist during the seedling period, and spray water several times in summer. Stop watering after August to facilitate the lignification of seedlings.
2. The seedling period between the seedlings should not be too early, preferably from late May to early June, leaving 1 to 3 strains per bag. In addition to pests and diseases, abnormal development, weak seedlings and too dense seedlings.
3. Weeding takes place 5 to 10 days. For grass with large stems and leaves or open grass, the surface of the bag should be cut off to avoid loosening the seedlings or pulling out the seedlings.
4. Top dressing When the primary leaves appear on seedlings, top dressing is started. In order to control the concentration of fertilization and increase the utilization rate of fertilizers, the method of liquid fertilizer spraying should be adopted. It should be done every 15 days, preferably in the evening. 0.2% urea solution was used in the early stage and 0.2% to 0.3% potassium dihydrogen phosphate solution was used in the later stage. Immediately flush the leaves with water after dressing. Stop after August.
5 shade shady pine seedlings Xi shade environment, so the seedlings should be set up after the excavation of the shade in a timely manner to reduce the occurrence of blight. Shade material transmittance is preferably 60% to 70%. The shade net can be fixed flatly on top of the seedbed. The shade net should be more than 2 meters above the bed to facilitate management activities. The area should be 1/3 larger than that of the seedbed so as to avoid the risk of sunburn on the seedlings on the outer edge of the seedbed when sunlight is not vertically irradiated.
6. Pest control In order to effectively control the occurrence and spread of tripartite blight, spraying should be repeated once every 7 days. When used for control, equal amounts of Bordeaux mixture, 2% ferrous sulphate, 1% dexamethasone (or carbendazim, torato, etc.) can be used alternately. At the same time, attention should be paid to the timely removal of the diseased plants and their centralization away from the nursery.
7. Cold-proofing The annual one-year old Pinus bungeana seedlings are young, poor in cold resistance, and vulnerable to freezing. Therefore, sufficient water should be poured before freezing and then scaffolding on seedbeds to ensure safe wintering of seedlings. The specific approach is to build a plastic shed, cover the straw shed, the shed is not windy, open during the day, covered at night. In the second year, we will continue to strengthen fertilizer and water management and prevent pests and diseases, so as to promote the healthy growth of seedlings and maintain a high preservation rate.
Four: nursery stock and transplant
Due to restrictions on the supply of moisture and nutrients, ventilation and light transmission, container seedlings of birch pine should be transplanted.
According to the soil moisture condition, watering the seedbed two or three days prior to transplanting will increase the humidity of the nutrient soil in the container, and at the same time facilitate the preservation of the nutrient soil in the bag during the “starting, transporting, and planting†process of the seedlings, thereby facilitating the maintenance and restoration of the moisture of the seedlings. The metabolism-based balance eventually achieves the goal of increasing the survival rate of the transplant. In the process of transplantation, the time from raising plants to planting should be shortened as much as possible. When transplanting, the spacing of plants is from 20 cm to 50 cm, and the spacing is 30 cm to 60 cm. Do not injure the end buds of the seedlings during the transplant process, and gently handle them gently to prevent the soil in the containers from scattering. The depth of the graft is preferably equal to the level of the mouth of the container after transplantation.
in conclusion
In the process of seedling raising of Pinus bungeana, the preparation of nutritious soil and the disinfection of seeds are two tasks that must be done before sowing, which largely determines the success or failure of nursery and must be highly valued.
Seedling management should focus on timely shade, and do a good job of disease prevention, while doing a good job of adding water, thinning, weeding, fertilizer and other work to ensure good growth of seedlings.
From the two-year container seedlings to large seedlings, B. sylvestris usually needs to be transplanted three times. This is to promote the formation of a good root tissue, thereby increasing the survival rate of the large seedlings and facilitating their growth.
Face Beauty Red Light Lamp ,Face Beauty Light Lamp ,Face Beauty Equipment Lamp ,Skin Rejuvenation Beauty Lamps
Shenzhen Bonliter Optoelectronic Co., Ltd. , https://www.beautyredlight.com