At present, there are a lot of flower seeds on the market. When purchasing, Huayou should pay attention to the production date and shelf life indicated on the packaging bag, no matter whether it is domestic seeds or imported seeds. Do not purchase the seeds without indication.
Most expired seeds have lost their vitality and will not sprout. In addition, when purchasing seeds, florists should have a basic understanding of them, for example, to master whether the seeds purchased are one or two-year flowers, perennial flowers, spring flowers or autumn flowers. Generally speaking, seeds sown in spring usually bloom in summer and autumn; seeds sown in autumn usually bloom in spring and summer (except woody flowers). If the sowing date is reversed, and there is no certain anti season cultivation conditions, it is difficult to achieve the expected purpose of flowering. It is more prudent to purchase flowers that have never been raised before.
Different seed treatment methods should be used for different flowers.
The seeds that are easy to germinate can be soaked by seed soaking method. For example, a bunch of red seeds can be soaked in warm water at room temperature of 40 ℃ for one day and night, and can be sown after being washed clean.
Hard seeds, such as bamboo, peony, jiulixiang, bairihong, Daphne, etc., should be soaked in hot water at 40 ℃ for about 48 hours before sowing in the pot soil. After 20-30 days, they can germinate and grow.
For the short dormancy period and easy to germinate, the sorbet and Bauhinia can be directly seeded by soaking in 40 ℃ ~ 60 ℃ warm water for 24-48 hours.
Some flower seeds need to be treated with low temperature for a certain period of time in order to promote post ripening, break the dormancy of seed embryo and sprout, such as clove, wintersweet and some autumn herbaceous flowers.
Some flowers have the characteristics of double dormancy of radicle and hypocotyl, that is to say, the radicle needs to pass the high temperature stage of 25 ℃ ~ 32 ℃ for 1 to 2 months or longer to break the dormancy, such as the seeds of fimbria, Poda and Paeonia.
In addition to certain water conditions, the germination of dry seeds must also have a certain temperature.
For example, the suitable temperature for the germination of snowballs in Cruciferae must be 5 ℃ ~ 20 ℃, the suitable temperature for the germination of Gerbera must be 20 ℃ ~ 25 ℃, and the suitable temperature for the germination of primroses must be within the range of 15 ℃ ~ 18 ℃, too high or too low temperature will affect the emergence rate of flowers, and even lead to the occurrence of seed mildew, greatly reducing the germination rate and seedling rate.
Seeds with large particles, solid skin or oil, such as rose, rose, pomegranate, kumquat, Magnolia and other flower seeds, are suitable for sowing in autumn.
The seeds with small particles and thin skin, such as chrysanthemum, bamboo, Impatiens, hundred sun red, Lingxiao flower, are suitable for sowing in late spring.
Seeds that need high temperature to germinate should be sown in time after ripening. For example, cyclamen, citrulline, red crested and other flowers should be sown in early summer.
There are two forms of flower sowing: open field sowing and pot sowing. In either way, the soil should be loose and aerated, with small particles and good drainage. It is better to use the soil rich in humus nutrients and moderate acid and alkali, which is conducive to seed emergence.
Specific sowing methods include sowing, drilling and hole sowing. Sufficient water shall be poured before sowing, and plastic film shall be covered after sowing to prevent the soil from being too dry to affect seed germination and emergence.
The best sowing depth is 2.5 times the diameter of flower seeds. The seeds of cockscomb, August chrysanthemum, Begonia and Cineraria should be mixed with fine sand and seeds before sowing.
During seed germination after sowing, attention should be paid to water spray to keep moisture, but not too much water spray, so as to avoid retting the fibrous roots of seeds and seedlings.
After flower seeds are sown, proper light can increase the soil temperature and induce seed germination, which is more important for the seeds to break through the seed coat and sprout, which not only affects the emergence rate of seeds, but also directly relates to whether they can grow into good seedlings and strong seedlings.
Therefore, from sowing to transplanting, we should try our best to meet the needs of light for flower growth, and the light intensity is a gradual transition from dark to weak light and then to natural light. < spanstyle = "MSO spacerun: 'yes'; font family: classic Tahoma; font size: 10.5000pt; MSO font kerning: 1.0000pt;" > O: P >
