The summer environment is easy to cause the death of carnations.

If you have the experience of growing carnations, you will find that the dead seedlings of carnations will increase in hot summer. what is the reason for this? In fact, there are many reasons why carnations die in hot summer. The editor will analyze for you the reasons for the death of carnations in summer caused by the external environment.

Carnation

After the carnation cuttings are inserted into the seedbed, it is necessary to artificially create good conditions to make it full of vitality, produce root primordia as soon as possible and sprout robust roots. Although the roots of the seedlings planted in the field can absorb water and nutrients to a certain extent and maintain the vitality of the body, under the condition of different living environment, the seedlings can not adapt to the external environment in a short time, especially the seedlings with poor seedling quality.

In addition, the temperature rebounded quickly after June, and the temperature in the plastic bamboo shed exceeded 30 ℃, and the weather was often rainy and sunny, making the low and humid bamboo shed like a steamer, muggy, humid and poorly ventilated. Such weather forces seedlings to increase transpiration, respiration, nutrition loss, plus too much watering at seedling stage, high soil water content, low oxygen content, hardly long new roots, weak adsorption of old roots, and man-made poor environment for seedling growth, resulting in an increase in seedling death.

The environment of potted carnations requires the breeding process of potted carnations.

Every Mother's Day, the carnations in the flower shop will be snapped up, so why not consider planting your own pot? How to raise potted carnations? Potted carnations should still pay attention to the regulation and control of temperature, the choice of light, the principle of watering, the right amount of fertilization, and so on. Let's take a look at how to raise potted carnations.

Environmental requirements for potted carnations

1. Temperature

Prefer cold and cool, the optimum temperature for growth is 19 ℃ to 21 ℃ and the night temperature is 9 ℃ to 10 ℃. If the temperature difference between day and night is too high, the leaves are narrow, the flowers are small, and the branches are weak. If the temperature is higher than 35 ℃ in summer and lower than 9 ℃ in winter, the growth is slow or even stops or behaves abnormally.

2. Lighting

Like the sun, in addition to the seedling stage, flowering stage, as far as possible to maintain sufficient light. Carnation is a cumulative long-day plant, the longer the sunshine accumulation time, the more can promote flower bud differentiation, and then early flowering, increase the number of flowers, and improve flowering uniformity. Light can be added artificially when low temperature and weak light in winter and cloudy and rainy days. For example, under the condition of low light for a long time, leaves, branches and flower stems will become thin and easy to break, and induce various diseases.

3. Master the principle of watering

Why do some potted carnations have rotten roots? Potted plants have something in common: they like an environment with good ventilation and drainage. Excessive watering can easily lead to root rot, so it is necessary to grasp the number of watering times. Avoid stagnant water. Pay attention to loosening the soil and drainage in the rainy season. Except for timely watering during the growing and blooming season. Usually less watering, in order to keep the soil moist. If there are conditions, it is appropriate to keep the air wettability at about 75%. (children's shoes with air humidifier at home, this should not be difficult to control) remind the principle of watering carnations again: the basin table is not dry, water is thoroughly watered, avoid waterlogging.

4. Pay attention to fertilization

If you choose children's shoes planted with carnation plants. Attention should be paid to the selection of clayey soil with good drainage, rich humus, good fertilizer retention and slightly alkaline. Before planting, the basin floor should be fully fertilized with basic fertilizer containing potassium, calcium, nitrogen and phosphorus (or with sufficient baking fertilizer and bone meal). Liquid fertilizer should also be applied continuously during the growing period, generally applying mature thin fertilizer and water every 10 days or so, and applying topdressing after flower picking. Fertilization is prohibited during the high temperature period in summer, otherwise it is easy to wither and die.

5. Methods of reproduction

Carnation is the most suitable for cutting propagation. The time of cutting is unlimited, except for the too hot climate, it can reproduce in other seasons. Among them, the survival rate of cuttage in early February was the highest.

2. The process of raising seedlings of potted carnations

Take the growth cycle of 140 days as an example, if you want to be listed 25 days before a festival, you need to sow seeds 180 days before the festival (that is, the growth cycle + 15 days + 25 days). Summer sowing and autumn sowing are prone to early buds, so we should pay attention to picking hearts and buds. A rich and loose matrix rich in organic matter can be prepared with rotten leaf soil, domestic peat and perlite according to the ratio of 4 ∶ 2 ∶ 1. Moderate humidity, fingers touch the surface of the matrix moist, but there is no water overflow. In addition, the pH value and EC value should be determined, the standard is pH value 6.0 to 6.5, EC value 0.5 to 0.75.

Sow 3 grams of seeds per square meter and cover the soil with a depth of about 0.3 cm. No light is needed for germination. Cover the seeds with a sunshade net and remove them after emergence. The suitable temperature for germination was 15 ℃ to 20 ℃, the seedlings emerged 5 to 7 days after sowing, and the light after emergence was 10 000 lux to 12000 lux.

Start topdressing when the heart is broken, urea is used for fertilizer, and the concentration is 2.5%. The stage of true leaf growth and development is from 14 to 21 days after sowing. The nursery bed kept moderate humidity, 18 ℃ to 20 ℃ in daytime and 18 ℃ at night. The concentration of fertilizer is. 08% to 0.12%, lighting should be enhanced and fungicides should be sprayed. Special attention: the seedbed matrix should be thoroughly watered before sowing to facilitate seedling emergence. If there is not enough water, be sure to water enough when covering the sunshade net after sowing.

The seedling soil is required to be rich in organic matter, loose and well drained. The ratio of pastoral soil (sterilized) + mature sawdust + domestic peat + perlite is 9 ∶ 3 ∶ 1 ∶ 0.5. PH values range from 6. 0 to 6. 3 and EC values from 1. 0 to 1. 5. A plastic bowl of 10 cm × 8 cm (caliber × height) in a seedling container.

The above is the relevant introduction of this article, I believe you have a simple understanding of this after reading it, if necessary, you can continue to pay attention to the No. 1 home network to learn more information.

Culture methods of carnations 2013 version of the 2013 version of carnations, also known as carnation, carnation, Carnation perennial root-derived herbs. Stems tufted, hard, grayish green, nodes dilated, about 50 cm high. The stems and leaves are similar to Chinese carnation and are stout and covered with white powder. The flowers are large and fragrant, solitary, 2 or 3 fascicled or Cymes. There are four rhombic-ovate bracteoles under calyx, apex mucronate, ca. 1 apical 4 of calyx tube. Calyx tube green, 5-lobed. Petals irregular, margin toothed, single or double, red, pink, yellow, white and so on. The florescence is from April to September.

Carnation originated in the Mediterranean region and has been cultivated for thousands of years. There are three types of carnations: one is the flower mirror, the plant is short, the pedicel is short, and blossoms in spring and summer; the other is Malmeisheng, which is hardy, easy to grow in the open field, and has many flowers; and the other is a seasonal flowering class with tall plants, strong stems, large flowers and double petals.

Most of them are cultivated in greenhouse. In addition, it can also be divided into varieties according to the color of the flowers, such as bright red varieties, purple varieties and so on.

Carnations prefer cool, slightly dry summers and warm and sunny winters. Not cold-resistant, afraid of high temperature and rain. The optimum temperature for growth is 15 °~ 20 °.

Carnation potted plants should generally choose tall bowls with larger inner diameter, and the potted soil should be cultivated with garden soil, peat soil, rotten leaf soil and sand in the ratio of 3 to 3, 3 to 2 and 2 to 2. Apply sufficient basic fertilizer containing potassium, calcium, nitrogen and phosphorus at the bottom of the pot before planting. Seedlings should be transplanted with three plants in each pot. The planting depth should be slightly shallower than the original seedling, pour water after planting, place the seedling slowly in a cool place, and then gradually move to the sun for maintenance after survival. Ensure that the light is 6-8 hours a day.

At the height of summer, carnations are in a semi-dormant state, so the pot plants should be moved to a well-ventilated environment and pay attention to shading them to avoid hot sun exposure. Generally, after transplanting, if the water and fertilizer are suitable, the temperature is suitable, and the light is sufficient, it can blossom within three months.

'Productive soil selection

Carnations should be planted in calcareous soil rich in humus and well drained.

°light condition

A preference for bright light is one of the important characteristics of carnations. Whether potted plants pass the summer or the greenhouse promotes cultivation, they all need sufficient light and should be placed in the sunny position of direct light.

, moisture

During the growth and development of carnations, the principle of wetting between dryness and wetness should be grasped to keep the basin soil moist and dry. Especially in the high temperature season in summer and low temperature in winter, carnations are in a semi-dormant state, and watering should grasp the principle of wetting between dryness and dryness, so as to make the basin soil dry and prevent excessive watering from causing rotten roots.

°fertilization time

Carnation likes to be fertilized. In addition to applying base fertilizer when potted, new shoots begin to grow 7-10 days after potting, and thin pancake fertilizer, bone meal or sauce residue fertilizer can be applied alternately every 10 days or so. Because of the great demand for potash fertilizer, carnations can apply potassium solution (1 000-1 500 times) or 0.29 °~ 0.3 °potassium dihydrogen phosphate solution twice a month during its growth and development.

It should be noted that carnations are not suitable for thick fertilizer. Do not splash the fertilizer on the leaves and stems when applying fertilizer. Do not apply fertilizer when the air temperature is cold or the temperature is low.

Reproduction

Carnations can be propagated by sowing, pressing or cutting, but it is the most suitable for cutting propagation.

Cuttings: there is no time limit, except for the hot season, other seasons can reproduce. Among them, the survival rate of cutting is the highest from the end of March to the beginning of April. Cuttings should choose mother plants with good variety, strong growth, neat flowering, few nodes, good quality and no diseases and insect pests, and peel (preferably not with scissors) well-developed lateral branches 6-9 cm long as cuttings. When stripping, you should peel off the leaves together, but be careful not to damage the parent plant.

The cutting substrate is garden soil mixed with rice chaff ash, drenched with water before sprouting, and then cut into human soil. Water immediately after insertion and cover with sunshade. Water is often sprayed on the leaf surface to keep the cutting substrate moist. When the temperature is ⑴ "~ °°, it can take root in about 20 days, and can be planted in a month.

Crimping: from August to September. Select the long branch, cut the skin of the part that touches the ground with a knife and press the soil on. After 5-6 weeks, it can take root and survive.