As we all know, small or micro-grained flower seeds are difficult to sow seeds, poor seedlings and difficult seedling management and other factors, in fact, as long as the following links are mastered, these existing problems can be solved.
OneTemperature
There are no strict seasonal restrictions on the sowing period, and it often depends on the desired flowering period. Seedlings can be raised in the greenhouse or open field, but special attention should be paid to the stability of air temperature or ground temperature, the most suitable temperature for the germination of small or micro seeds is generally between 15-25, the ground temperature should be kept between 20-35 is particularly conducive to the emergence of seedlings, after sowing should fully ensure the temperature required for germination, while attaching importance to germination needs a certain temperature, it is also necessary to pay attention to the influence of the temperature difference between day and night on seed germination, generally the temperature difference between 6-8 is more suitable. If the ground temperature is too low, an electric hotbed should be laid to improve.
IImedium
Sowing medium is the key to the success of seedlings, in order to ensure that the emergence rate is improved, we must choose loose and breathable, good water retention, pH value of 65. Seedlings are raised in peat soil or grass carb soil with low nutrient content and moderate particle sizeThe proportion of seedling soil configuration is: humus 5, garden soil 3, river sand 2 or add gravel, perlite to keep loose and breathable, and attention should be paid to the substrate salt crossing can not be too high when extracting pastoral soilPay attention to whether there are herbicides and other pesticide residues, and the formaldehyde residues of pesticide residues will affect the emergence of seedlings. When configuring seedling soil, carbofuran insecticide or didimyxim fungicide should be appropriately mixed according to the dosage to prevent diseases or insect pests in the seedling soil.
IIIHumidity
The optimal moisture content for the germination of small or micro seeds is 95%, so the medium should be fully given proper water before sowing, not only to ensure that the medium has sufficient water, but also to maintain the continuous moisture of the medium, once the seeds are absorbed, they can not lose water again, otherwise the germination rate will be affected. On the other hand, it is equally important to maintain air humidity, when the humidity of the general medium is kept at 30-50%, and the air humidity is maintained at 80-90%, the germination rate can reach more than 80%.
FourthSeeding method
Due to the large number of small or micro-grains of seeds, each gram ranges from 5,000 to tens of thousandsThey all have the characteristics of good light, so when sowing, try not to cover the soil, and only sow the seeds on the surface of the seedbed. Therefore, the seedbed should be carefully prepared before sowing, and no fertilizer should be applied in the seedbed under normal circumstancesWater the seedbed thoroughly first, wait for the next day to see the seedbed crack, fill the crack with fine soil and water the seedbed again, and wait for the water to permeate the seeds evenly mixed with a certain amount of surface sand and then spread on the seedbed.
When sowing, it should be fine, repeatedly and evenly sown, not covered with soil after sowing and immediately covered with a small arch shed to facilitate moisture, keep the seedbed moist, and the seedlings will emerge in about 7-13 days. If the amount of sowing is less, please make a small soil pond with a flat bottom in the greenhouse, spread a piece of plastic film at the bottom of the pool, use a seedling tray or a large plastic pot, scald a few small holes at the bottom of the pot, and load the seedling soil in the pot, when loading the soil, it can only be loaded to 8-10 cm away from the mouth of the basin, and the pot will be prevented from entering the pool after scraping, and the water will be injected into the pool, and the seeds will be evenly mixed with a certain amount of sand after two days, and the seeds will be evenly mixed with a certain amount of sand, and the small arch shed will not be covered immediately after sowing。 After sowing, rat traps should be placed around the seedbed to prevent rats from eating part of the seeds and causing uneven seedlings.
FiveSeedling management
After emergence, the air humidity and medium humidity should be appropriately reduced, the air humidity can reduce the occurrence of pests and diseases, and the problem of medium salinization can be avoided when the air humidity is high. Especially for some media with high nutrient content, more attention should be paid to air humidity, otherwise it is easy to form salinization on the surface of the mediumMedium humidity reduction, not only to reduce the occurrence of pests and diseases, but also conducive to the extension of the root system, when to control water, should be based on the growth characteristics of seedlings, too dry will inhibit the growth of slenders, too wet is easy to cause cataplexy, should gradually reduce the humidity of the medium, and maintain air humidity, and in 3-5 days of water control should be immediately replenished water, and then continue to control water.
The above sowing methods are suitable for the four seasons of Haitang, Babao Sedum, Mullein, Celandine, Po Pona, Coleus vulgaris, willow piercing fish, melon leaf chrysanthemum, pine leaf peony, bellflower, petunia, tobacco flower, monkey face flower, emerald butterfly flower, beautiful flying peng, foxglove, poach flower, snapdragon and other varieties.
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