(2) Soaking seeds to accelerate germination. Wrap the seeds soaked in water with wet gauze or towel, cover them with wet towel or gauze to avoid light, and put them in clay pots or other containers, usually at about 25℃ to accelerate germination. Wash the seeds with warm water twice a day until they germinate. If the temperature of 20 ~ 30℃ is used to accelerate germination, it is more beneficial to the germination of many flowers. When the ground temperature of 5 cm soil layer is above 22℃, most flowers can be directly planted after soaking, or directly planted after disinfection, which is more convenient; The low-temperature seedbed should germinate before sowing. Undoubtedly, for most flowers, it is impossible to sow seeds with accelerated germination when the daily average ground temperature is lower than 15℃. Marigold, Zinnia, Celosia cristata, Violet, Jasmine, calceolaria, Chrysanthemum, Impatiens, Dahlia, Sonchus, Carnation, etc. It is easy to germinate, and dry seeds can be directly sown. Herbaceous flower seeds can't touch oil, acid, alkali and salt in every process of disinfection, soaking and germination.
(3) sowing. Firstly, put the prepared loose nutrient soil into a seeding container, advocate using plastic seedling trays in protected areas to raise seedlings, and scrape the nutrient soil in the trays with wooden boards or glass. You can also sow seeds on the seedbed on the ground and level the nutrient soil with a rake.
Water the nutrient soil thoroughly by spraying water, and it is advisable to see a little water seeping under the container later. If you plant seeds on a seedbed on the ground, you should water it in one place and then move the watering can to another place. The soil layer around 10 cm is suitable for watering, so don't water it too much. If there is water in some places on the topsoil, after the water seeps down, gently fill it with fine soil or put the container flat. Then sow immediately. Larger seeds can be sown as needed, which is labor-consuming, but robust and convenient to manage, and can be divided into seedlings in the later stage. Most flower seeds are small and should be sown. If the seeds are found to be uneven after sowing, gently stir them evenly. It is best to sow the seeds in several times, so it is easy to sow them evenly. After sowing, cover with fine soil with a thickness of 0.2 ~ 1.5 cm. Seeds are covered with thick soil, while seeds are covered with thin soil. Petunia, calceolaria, sweet potato, Erythrina macrophylla, foxglove, etc. Covering very small seeds of 0.2 cm or less, such as Celosia cristata, Dianthus chinensis, Spatholobus suberectus, Liriomyza sativae, etc. Are covered with about 0.5 cm. Small seeds such as Impatiens balsamina, Abelmoschus manihot, Dahlia, Zinnia, Ornamental Pepper, Winter Coral, Marigold, Salvia splendens and Fluconazole cover about 65,438+0 cm. Ornamental pumpkin, cyclamen persicum, calendula and other large and medium-sized seeds are covered with1.2 ~1.5cm. Anyway, the soil is too thin. The nutrient soil has been disinfected, so it is not necessary to use pesticide soil when sowing, otherwise pesticide soil should be used before and after sowing, and seeds should be sandwiched in the middle, especially when seedling diseases are prone to occur.
After covering the soil, cover the seedling tray or seedbed with plastic film or plastic film, and a few with glass. For example, a seeding tray is placed in a germination chamber without a cover. Shake off the water drops under the plastic film or plastic film every morning, and remove them immediately after seeing the new buds arching the soil.