Analysis on the specific maintenance points of the planting method of zinnia

People who pursue European style can choose zinnia when decorating at home. This kind of plant can bring you a natural atmosphere and make people feel as if they are in paradise and heaven on earth. What is the planting method of zinnia? Next, you can follow the editor to learn more about it.

The planting method of zinnia:

1. Sowing seeds

Seed propagation should be sowed in spring, usually in the middle and last ten days of April, and the optimum temperature for germination is 15-20 ℃. Its seeds are light-abhorrent, so they should be covered with soil, watered and moisturized after sowing, and germinate and germinate after about 1 week. The germination rate is generally about 60%. During the period from Lesser Fullness of Grain to the Summer Solstice, combined with coring (4-5 coring) and pruning, strong branches were selected, a section of shoots 10 to 15 centimeters long were cut as cuttings, the lower leaves were removed, the upper two leaves were left, and inserted into the fine river sand, often spraying water, properly shading, and rooting after about 2 weeks. After the planting survived, it is not necessary to apply fertilizer too frequently in the seedling stage, and liquid fertilizer is generally applied once a month. Close to the flowering stage, more topdressing can be applied, applying liquid fertilizer every 5 to 7 days until the flowers are in full bloom. When the seedling is as high as 10 cm, leave 2 pairs of leaves, cut off the head and pick the heart to promote the germination of lateral branches. When the lateral branch grows to 2-3 pairs of leaves, leave 2 pairs of leaves and pick the heart for the second time. In this way, the plant shape can be large and the flowering can be varied. It can blossom after 70 days after spring sowing. The zinnia blossoms at the top of the branch. when the flower is ruined, two pairs of leaves should be left at the base of the flower stem to cut off the residual flowers in order to induce new shoots in the axils of the cut leaves. Watering frequently after pruning and topdressing for 2 or 3 times can extend the flowering date to before Frosts Descent. The first batch of seeds matured before the rainy season are of good quality and should be harvested and retained in time. When sowing seedlings with 4-6 leaves, they are planted in 10-12 cm pots.

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

The sowing time depends on the required flowering time. The seeds are usually sown in the greenhouse 2-3 months in advance. Direct seeding in the open field should be after the severe cold in early spring, otherwise the seedlings are underdeveloped; if the flower bed is used in autumn, it is appropriate to sow seeds in summer. The seeds of zinnia are light-resistant, and the soil should be thick and dense after sowing in order to improve the germination rate.

It takes place from March to April in spring. The optimum temperature for germination was 21-25 ℃. After sowing, the seeds germinated 7-10 days, and the germination rate was 60%. From sowing to flowering varies from 45 to 75 days. Spring sowing was carried out from March to April and was transplanted with 4-5 leaves with a distance of 10 cm. The plant was planted at the beginning of June and the row spacing was 30 × 30 cm. 10 times human feces and urine were applied every 10 days during the growth period. From July to Frosts Descent blossoms. Zinnia can also be propagated by side branch cuttings in summer, but because the temperature is too high and there are many showers, attention should be paid to shading.

2. Cuttage

After the seedlings grow out of a true leaf, the seedlings are transplanted once, and the root system is underdeveloped, and the lateral roots are less. Generally, when transplanting 2 true leaves, the transplant should take soil, and the transplanting substrate should be loose, fertile and well drained. It can be prepared with 3 parts of pond mud, 1 part of rotten leaf soil and 1 part of mature barnyard manure, and the planting depth is 0.5 cm below the cotyledons. After planting, the soil is pressed gently and watered. The row spacing of dwarf species is 30 cm, and that of tall stems is 50 cm. Apply leaf fertilizer (rotten soy sauce residue, etc.) once a month after planting. In order to promote plant dwarfing and more branches, B9100-500 times solution can also be sprayed at seedling stage.

Pick the heart many times. The dwarf hundred-day grass should pick the heart many times, leaving 4 leaves to pick the heart for a total of 2 times in the 6 leaves, and apply potassium dihydrogen phosphate after each extraction, especially from budding to flowering, spraying 0.2% potassium dihydrogen phosphate every 5 days. Fertilize to prevent disease. After the plant growth is stable, the soil should be kept moist, water should be watered in the morning and evening in summer, 200 mg / L nitrogen fertilizer and organic liquid fertilizer should be applied every 5-7 days at seedling stage, compound fertilizer should be used after 2-3 times of application, and thin fertilizer should be applied in the middle of summer.

Cutting propagation is usually carried out from June to July. Cut the side branches of Chrysanthemum morifolium with a length of 10 cm, insert them into the sand bed, take root 15-20 days after insertion, and pot after 25 days. Due to the irregular growth of cutting seedlings and troublesome operation, the practical application is not common.

Key points for maintenance of hundred-day grass:

Like light; like warmth, avoid extreme heat, withstand early frost; require fertile and moist soil to significantly reduce the quality of flowering on barren and dry soil.

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

Light. Can be directly used in full sunlight, direct sunlight. If there is not enough sunshine, the plant is easy to grow, the resistance is also weak, and flowering will also be affected.

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

Planting density. There are 18 plants per square meter. The hundred-day grass prefers the dry soil environment and avoids environmental waterlogging. In addition to applying an appropriate amount of chicken manure as the base fertilizer for the plant during planting, we should also apply dilute liquid fertilizer once a week in the vigorous growth stage, which is a crop that likes nitrate nitrogen, so do not apply ammonium fertilizer such as ammonium sulfate and ammonium bicarbonate. The hundred-day grass is full of sunshine and avoid shade in the environment. Keeping the environment ventilated can prevent overgrowth of plants and reduce the occurrence of powdery mildew. Saxifraga prefers warmth and is not cold-tolerant. The optimum temperature for its growth is 20 ℃ and 30 min, and the plant dies gradually after frost in autumn.

Key points of long-term maintenance of hundred-day grass

Maintenance of zinnia during its growing period

When the seedlings of zinnia have 2 or 3 true leaves, they need to be transplanted once, and they will be planted in mid-late May. It is necessary to apply mature organic fertilizer when planting. When the zinnia grows to about 15 cm, it needs to leave two pairs of leaves at the base to pick the heart, so as to promote the growth of axillary buds, so that it can be more branched and more flowering. After the flower fade, the residual flowers need to be cut off in time to reduce the consumption of nutrients and facilitate the next flowering.

Water and fertilizer conservation of zinnia

In addition to the seedling stage, it needs timely watering, in addition, it is generally not suitable for more watering. But the summer period needs to be watered frequently to keep the soil moist. Otherwise, it will cause small leaves and yellow flowers, poor color and luster, and the ornamental value will be greatly reduced. During the whole growth and development period, it is usually enough to chase three times of thin fertilizer. The mixed fertilizer of chlorine and potassium was mainly used in the seedling stage, the phosphorus fertilizer was the main fertilizer in the bud stage, and the compound fertilizer of chlorine, phosphorus and potassium was applied in the first ten days of September. If you fertilize too much, the plant is easy to overgrow and cause lodging.

When using zinnia as a cut flower, the tall type species should be selected, the heart should not be picked at the seedling stage, and the flowers at the top of the main stem should be used for the cut flowers. Because the tall planting plants are relatively tall and the stems and branches are easier to break in strong winds, it is necessary to set up pillars in time. In the high temperature season, the growth of zinnia becomes weaker, flowering is poor, and it does not bear seeds. At this time should be often watered, while the need for timely control of red spiders, autumn can continue to grow and blossom.

After each flower fade, the residual flowers need to be cut off in time to reduce the consumption of nutrients and facilitate flowering again. At the same time, fertilizers mainly based on phosphorus and potash should be applied for 1 or 2 times. Do not plant continuously in the same piece of land to reduce the occurrence of diseases.

Maintenance of potted zinnia

The dwarf species should be selected for potted zinnia, and the loose, fertile and well-drained sandy loam should be selected for direct sowing; at the same time, it not only needs reasonable watering and fertilization, but also needs to pick the heart for 2 or 3 times to promote its branching and multi-flowering. If managed properly, a pot of zinnia can bloom 10 or 20 flowers at the same time.

How to plant hundred-day chrysanthemum?

The zinnia flowers are big in color and have a long flowering period. from June to September, the flowers bloom one after another, maintaining bright colors for a long time, symbolizing friendship Tian Chang Di Jiu (Eternal Dumpling). What is more interesting is that the first flower blossoms at the top, and then the top of the side branch blossoms higher than the first one, so it is also named "step by step higher". So what are the key points of planting techniques of zinnia? Next, the editor will introduce to you.

I. Plant stereotyping

If the zinnia is not treated with coring, there are too few lateral branches and few flowers. Proper coring can promote the dwarfing of the plant and the increase of flowers. When the seedlings grow to 4 leaves, plant and pick the heart to promote the growth of lower branches to form a better plant shape. After a week of planting, we began to pick the heart, leaving 4 pairs of true leaves, and depending on the growth and branching of the plant, we decided whether to pick the heart again or not. During flowering, phosphate and potassium fertilizers such as potassium dihydrogen phosphate continue to be added to promote the flower head to grow continuously. After the flowers withered, the withered flower heads should be cut off in time to reduce nutrient loss.

II. Water and fertilizer management

At the time of planting, 2-3 grams of compound fertilizer was applied to the bottom of the basin, and 800 times of solution was used to irrigate the roots after planting. The basin soil should be kept moist within one week of planting to promote the growth of the surface root system. When the root system grows to the bottom of the basin, topdressing can be started, fertilizing 2-3 times a week (applying water fertilizer in sunny days, the concentration of 200mg/kg is controlled within 2-3 g / basin in rainy days), and calcium fertilizer can be added once. After 1 week of planting, the heart can be removed, and after heart removal, fungicides can be sprayed once and heavy fertilizer once. In the reproductive stage about two weeks after the last heart extraction, phosphorus and potassium fertilizer can be gradually increased, such as spraying 1000 times of potassium dihydrogen phosphate solution to promote more flowers and colorful flowers, and correspondingly reduce the amount of nitrogen fertilizer. During this period, adequate amount of water should be ensured, and water in the morning is better than in the afternoon. Rapid drying of leaves can prevent diseases and overgrowth.

Third, temperature and light

Hundred-day grass likes to be warm and sunny, can not bear the heat, high temperature and cold, and the suitable temperature for growth is 18-20 ℃ in daytime and 15-16 ℃ at night. It grows especially fast in summer. Can be directly used in full sunlight, direct sunlight. If there is not enough sunshine, the plant is easy to grow, the resistance is also weak, and flowering will also be affected.

4. Planting density

The planting density is 18 plants per square meter. The hundred-day grass prefers the dry soil environment and avoids environmental waterlogging. In addition to applying an appropriate amount of chicken manure as the base fertilizer for the plant during planting, we should also apply dilute liquid fertilizer once a week in the vigorous growth stage, which is a crop that likes nitrate nitrogen, so do not apply ammonium fertilizer such as ammonium sulfate and ammonium bicarbonate. The hundred-day grass is full of sunshine and avoid shade in the environment. Keeping the environment ventilated can prevent overgrowth of plants and reduce the occurrence of powdery mildew. Saxifraga prefers warmth and is not cold-tolerant. The optimum temperature for its growth is 20 ℃ and 30 min, and the plant dies gradually after frost in autumn.

The above are the key points of the planting techniques of the zinnia introduced by the succulent garden. I hope it can be helpful to you. Welcome to continue to pay attention to the succulent garden and learn more about the conservation and planting of Compositae plants.