The Propagation method of Zinnia

The main propagation methods of zinnia include seed propagation and cutting propagation.

Seed propagation of zinnia

Before sowing, the soil and seeds of zinnia should be strictly disinfected to prevent diseases and insect pests during the growing period. The seeds can be sowed from early April to late June. The seeds are disinfected by soaking seeds with 1% potassium permanganate solution for 30 minutes, and the matrix is mixed with 2 parts of rotten leaf soil, 1 part of river sand, 2 parts of peat and 2 parts of perlite. It can be disinfected with 0.05% potassium permanganate or 1000 times formaldehyde, and the soil can be fumigated at high temperature to kill bacteria, pests and grass seeds. Sowing on demand after the substrate is wet before sowing, zinnia is a photophobic flower seed, and must be covered with vermiculite after sowing. At a temperature of 21-23 degrees Celsius, it can germinate in 3-5 days, and no light is needed during the germination period. after germination, the seedling bed maintains 50%, 60% water content, not too wet, so as to avoid rotting roots or sudden collapse.

The seed life of zinnia is 3 years, and the germination rate is about 60%. Try to select full seeds in the last year to improve the seed germination rate. The sowing date can be determined according to the flowering time, and it takes about 7590 days from sowing to flowering. The seeds can be sowed on demand or unsown, covered with about 1 cm of thin soil, watered after sowing, germinated after 5-10 days of sowing, and transplanted once when the seedlings grow 2 leaves and 5-8 cm high. From planting to flowering, it takes 45 to 60 days for different varieties, and the suitable temperature for growth is 15 to 30 degrees Celsius. Except for the seedlings, they all need sufficient sunlight. In the upper basin, 3 parts of humus, 1 part of saw dust and 1 part of river sand can be mixed evenly.

Cuttage propagation of zinnia

The cuttage seedling of zinnia is not as neat as sowing seedling, you can choose to grow 10 cm side buds for cutting, take root in 5-7 days, then cultivate, manage and sow, and come out of the nursery after 30-45 days.

Temperature: hundred-day grass likes to warm to the sun, can not bear the heat, high temperature and cold, the suitable temperature for growth is 18-20 ℃ during the day and 15-16 ℃ at night. It grows especially fast in summer.

Moisture: due to the high demand for light, water is easy to evaporate, so it is necessary to maintain proper humidity and can be watered every day in summer.

Rizhao: the flowering period can be controlled by regulating the length of sunshine. Because it is a relatively short-day plant, the sunshine is longer than 14 hours, the flowering is delayed, it takes 70 days from sowing to flowering, and there are more tongue-shaped flowers; if the sunshine is less than 12 hours, the flowering is earlier, and it takes only 60 days from sowing to flowering, but more tubular flowers. In addition, the flowering period can also be controlled by adjusting the sowing time and coring time.

Prevention of overgrowth: it is very easy to grow seedlings in the later stage of growth. in order to prevent overgrowth, the methods are as follows: one is to reduce the temperature appropriately, the second is to ensure sufficient nutritional area and increase the row spacing, and the third is to pick out the heart to promote the growth of axillary buds. It is generally carried out when the plant height is about 10 cm, leaving 2-4 pairs of true leaves to pick the heart. If the seedlings are not only grown in the open field, you should also pick the heart in order to limit the height. Strong wind was released 7 days before planting to adapt to the environmental conditions in the open field.

Lodging resistance: in addition, zinnia is generally selected as a high-type variety for cut flower cultivation, which is different from courtyard flowers in usual maintenance and management, and special attention should be paid to lodging resistance in the process of cultivation.

The Propagation method of Zinnia

The propagation method of zinnia: the treatment before sowing

Before sowing, the soil and seeds should be strictly disinfected to prevent diseases and insect pests during the growing period. The seeds can be sowed from early April to late June. The seeds are disinfected by soaking seeds with 1% potassium permanganate solution for 30 minutes, and the matrix is mixed with 2 parts of rotten leaf soil, 1 part of river sand, 2 parts of peat and 2 parts of perlite. It can be disinfected with 0.05% potassium permanganate or 1000 times formaldehyde, and the soil can be fumigated at high temperature to kill bacteria, pests and grass seeds.

Before sowing, the substrate is wet and sowed on demand. Zinnia is a photophobic flower seed, which must be covered with vermiculite after sowing.

Hundred-day grass sowing

The seed life of zinnia is 3 years, and the germination rate is about 60%. Try to choose the full seeds of the previous year to improve the seed germination rate. The sowing date can be determined according to the flowering time, and it takes about 75-90 days from sowing to flowering. The seeds can be sowed on demand or withdrawn, covering about 1 cm of thin soil, watering after sowing, sprouting after 5-10 days of sowing, and transplanting once when the seedlings grow 2 leaves and 5-8 cm high.

From planting to flowering, it takes 45-60 days for different varieties, and the suitable growth temperature is 15-30 ℃. Except for the seedlings, they all need sufficient sunlight. The upper basin can be evenly mixed with 3 parts of humus, 1 part of sawdust and 1 part of river sand.

At the temperature of 21-23 ℃, it can germinate in 3-5 days, and no light is needed during the germination period. after germination, the seedling bed maintains 50% 60% water content, not too wet, so as to avoid rotting roots or quenching disease.

Propagation method of zinnia: cutting

Cuttage seedlings are not as neat as sowing seedlings, you can choose to grow 10 cm side buds for cutting, generally 5-7 days to take root, and later cultivation management is the same as sowing, 30-45 days later can be out of the nursery.

Cutting can be combined with coring and dwarfing.