First, according to equipment conditions, cultivation purposes and varieties, etc., arrange the corresponding sowing period. For example, in the former mountain area of ​​Baotou City, the warm solanaceous vegetables and melon vegetables can be planted in the solar greenhouse with thermal insulation facilities on March 20, and the warm vegetables can be planted in the plastic greenhouse on April 20, May 20. Planting thermophilic vegetables in open fields. Traditional nursery eggplants, green peppers, and peppers are seeded at a seeding date of 80-day seedlings and cucumbers and tomatoes according to seedling ages of 60-65 days. Seedling tray seedlings can shorten the seedling age by 15-20 days.
Second, the traditional bed seedlings to replace the old bed soil, seedbed culture soil to be loose, fertile, clean, seedbed to be fine and smooth, apply full maturity, fine-screened organic fertilizer, to create a favorable Seed germination, emergence and robust soil conditions.
In the winter, the seedlings in the tray seedlings generally use 50 holes for seedlings and the summer seedlings use 72 holes for the seedlings. The plugs were soaked in 0.1% potassium permanganate solution for 30 minutes, washed with water and dried for later use. Nursery substrate: high-quality peat, vermiculite, and perlite are used as matrix materials. The three are prepared at a volume ratio of 3:1:1 or directly with the manufacturer's nursery substrate. Then, 1 to 2 kg of the national standard compound fertilizer is added per cubic meter, 0.2 kg. Carbendazim, add water to make the matrix water content up to 50% to 60%, stir evenly and cover with moisturize the film to be used. Each cubic meter of matrix can hold 215 holes in 50 holes and 274 holes in 72 holes. When the germination seeds more than 70% break the mouth (releasing white) can be sown, but also dry seed live. 1Plate: First put the disinfection matrix into the plug tray, slightly vibrate and smooth, so that each hole can be filled with the matrix. After filling, all compartments should be clearly visible. 2 Pressure points: Put 5-10 vertical yards of the substrate with the substrate and put them together. Place an empty dish on them and place both hands flat on the pan until the desired depth of sowing is achieved. 3 Seeding: The seeds are placed in a well-pressed hole, 1-3 capsules per hole, to avoid missed sowing. 4 Coverage: Cover the stone or seedling substrate 0.8 cm to 1.0 cm after sowing. Covering vermiculite should not be too thick, and it is appropriate to match with the cell. 5 watering the film: After sowing, cover the tray neatly placed on the seedbed, timely watering, watering must be thoroughly drenched, visual observation of the hole in the bottom of the hole is appropriate to seep. After the water is soaked, it is covered with a plastic film to moisturize the seedlings.
4. There is sufficient sunshine in spring in our district. The temperature difference between day and night is very large. During the day, the temperature rises rapidly. At night, the temperature is very low. If the seedling is watered or sprayed, the moisture in the seedbed is too high, it is easy to induce damping-off and blight. . So be sure to pour enough water before planting. It's best to pour bottom water twice. If soilless substrate seedlings are used for seedlings, the substrate can be dry and wet, and the humidity should not be too large. In addition, a layer of disease-preventing medicinal soil is spread in the seedbed before sowing, and a layer of medicinal soil is sprinkled on the seeds after sowing to prevent the occurrence of damping-off and damping-off, and also to reduce the occurrence of root diseases in the growing period.
Fifth, the traditional nursery and time seedlings and seedlings, until the seedlings grow overcrowded, there are 2-3 true leaves, can be divided into seedlings, seedling spacing should not be less than 6? 6?.
Sixth, do a good job after seedling seedbed light, temperature, water and fertilizer management. Strive to shine more light, increase photosynthesis, accumulate nutrients, maintain proper temperature, mix water and fertilizer, and first promote seedling control. To prevent leggy, prevent old age, prevent disease, prevent freezing, prevent heat, and prevent wind damage as the "six defenses" center, we must strengthen seedbed management so as to resist severe weather such as cold currents and even rain and snow.
VII. One week before planting, proper seedling exercise should be carried out. If there are conditions, earthworm seedlings can be planted. Before spraying, insecticides and foliar fertilizers should be applied 1-2 days before planting. Fertilizer planting, saving time and labor.
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