Sowing seedlings of flowers

needs to focus on the following:First, the seed bed soil is not disinfected, seeds in the germination process by germs and died. Most of the industry still use garden soil to
culture
seedlings, soil is not disinfected, if the environment is not suitable for the growth of seedlings, a large number of seedlings died. There are two ways to disinfect soil, the first with steam and the second with chemicals. Some operators use fungicides first sprinkled on the seedling bed soil and then sow, the results are good. The most common symptom is that after the flower germination, the plant dies as a result of the bacteria turning tawny, while sometimes the seeds are attacked and die and cannot germinate, often mistaken for low seed germination rates.Related to the above is that the soil of the seedling bed is too wet and the plant is affected by
DAMPING OFF) and dies. There are four factors that make the soil too humid: first, the free pores (FREE POROSITY) of the soil are too small, the drainage is not easy, often water accumulation; The upper part of the plant infected with the inverted disease collapses and dies, and the roots become yellowish-brown or even black. In general, all soils are somewhat with some soil germs, such as: PYTHIUM, PHYIOPHTHORA and FUSARIUM, if the growth environment is suitable for plant growth, then the incidence is low, if the environment is uncomfortable, especially when the soil is too wet and air humidity, plants are prone to disease.Third, we can not fully grasp the technical requirements of seed germination and seedling growth. Generally speaking, when the seeds germinate, the water requirements are not consistent, some need to be very wet, such as autumn sea otters, arterial phoenix, some need to be drier, such as beautiful cherry blossoms, and most flower species germinate need to have enough moisture, wait until the root minister comes out, moisture to be reduced, in the interest of the development of the root.Fourth, when the flowers germinate, the soil can not be very uniform
dry
, often the upper part first dry and the lower part has been too humid. In this case, the roots do not grow to the lower layer of the soil, but on the surface layer, if the operator lets the soil too dry, then all the seedlings are very prone to water loss and death.Fifth, the general practitioners first sow in the seedling bed, if the seeds are small, not easy to evenly distribute, then the plant more place easy to grow, and lose commercial value, and when transplanting seedlings easy to be injured.Six is the seed germination can not provide the most suitable germination temperature. For example, the most suitable germination temperature for fairy and Flucau is
18 degrees C, while most flower germination temperatures are between 22 and 26 degrees C.Seven is the seed on the seed bed and the seed is connected, if a plant is sick, it is easy to spread to other plants.Eight is watering when the water bead particles are too big, small seedlings are often beaten down by water droplets, lying on the soil and died.Nine are some large particles of seeds that are not covered (or other media). The roots are facing up causing the plant to die.Solution:1. The medium most suitable for flower seedling growth is 20-25% free pores and 50% water protection. General loam, free pores 1.8, fine sand 2.5, pearl rock 29.8, zircon 27.5, peat/zircon (1:1) 24.3, peat/Zircon/Pearl Rock (1:1:1)27.8, Sand/Peat (1:1)9.4, Loam/Peat (1:1)6.3. As we all know, peat and other expensive, but the amount used in seedling production is very small, should be invested in less media and get better results. The pH of peat in the northeast is generally around 5.5. Canadian peat pH is around 4.0. Canadian peat because of low pH, bacteria are not easy to grow, and achieve a disease-free effect.2. Air flow in the greenhouse cultivation of seedlings and finished flower production is an important link, air flow benefits have (1) dehumidification (2) loam surface, leaf surface drying,
fungi
spores do not germinate (3) so that plant swing to achieve dwarfing effect (4) increase the exchange of CO2 and O2.3. To provide a suitable germination environment, the best way is to build a germination chamber that can control temperature and humidity.4. To prevent uneven seeding, to prevent the spread of disease and soil can be evenly dry /wet, the best way is to sow in a hole in the basin, and the basin placed fiber thick peat mixture medium, so that you can determine the seed seeding uniform, soil can be very uniform dry/wet, and can prevent the spread of disease. Sowing in a pot is a time-time job, and operators can consider mechanized seeding with a simple seeding machine.5. When the seedlings are watered, the fine nozzle is applied, which is dewy under normal water pressure, and achieves the function of watering and cooling.6. The seeds with large particles should be covered with zircon and pearl rock. Because there is heavy objects on top, it causes the roots to grow down. 7. Rats like to eat a bunch of red seeds, rat control is also one of the necessary work. At this stage, the domestic grass flowers, potted peanut industry has gradually abandoned the domestic production of conventional varieties, and to buy hybrid flower species abroad. Hybrid flower species have many advantages, such as strong growth, strong resistance to disease, flowers, large flowers, rapid germination and neat. Europe and the United States in the past is also each operator self-breeding, and then transplant, if the seedling is small, will wait a while. In this production structure, the performance of flower species is not very important. However, now flower production (especially seedling) has become a business, seedling professional companies, can produce hundreds of millions or more seedlings per year, relative to the seed germination requirements
completely," "fast" and "neat." In other words, "all" flowers are required to germinate "neatly" in the "shortest time". Flower seed companies are also well aware of these requirements, over the years, the selection, breeding, the introduction of many advantages of conventional hybrid varieties, the characteristics of these species to give these species they need the environment, such as light, temperature, humidity, pH, moisture, nutrients, etc. , these seeds can show their
gene
on the good traits: "complete", "fast", "tidy" germination. These flower species are very environmentally demanding, and if they are not met, they sometimes perform worse than the old-fashioned conventional species. This I hope that you engaged in grass flowers, potted flowers production industry must pay attention to.