Seedling raising of Hibiscus hibiscus by tender wood cuttings in summer

Hibiscus is cultivated all over China from the south of Northeast China to South China, but most of them are in the Yangtze River Basin. Hibiscus can bloom continuously for more than 3 months, and it blossoms in summer and autumn. It has long flowering period, large flowers and rich variation. It has a variety of different flower patterns and colors, so it is a very excellent garden ornamental tree species. And because of its strong sprouting and resistance to pruning, it is often planted as a flower hedge or as a background for other low shrubs or clumps in lawns, highway greening belts or forest margins. Let's take a look at the cutting techniques of hibiscus.

Cutting propagation is one of the most commonly used propagation methods of hibiscus, which has the advantages of simple operation, fast seedling growth, high propagation coefficient, low cost and so on. Especially for some excellent varieties, the use of cutting propagation can ensure that their excellent characteristics will not be lost.

Environmental condition

The cutting site is on the seedbed in the greenhouse of the production base, the cutting container is a 72-hole hole plate, and the cutting substrate is a mixture of 1:3 vermiculite and perlite. Before cutting, the substrate should be disinfected with 1000 times liquid carbendazim about 3 days in advance, and then covered with plastic film.

Cutting time and cuttings

The optimum time for softwood cutting should be the vigorous growth period from June to July. The mother plant with strong growth and free of diseases and insect pests was selected, and the branches of one-year-old plants with vigorous growth, good development and free of diseases and insect pests were cut as cuttings. When different growth parts or different branches of the same branch were selected as cuttings, there were some differences in rooting rate and rooting quality. Generally speaking, the sprouting branches at the base of the mother plant are easier to survive and have better rooting quality than the upper branches, and the upper branches of the same branch take root better than the lower branches. Cuttings should be cut along with cutting to prevent water loss and wilting. When making cuttings, the branches should be cut into small segments of 10~15cm, each cuttings have 2 full buds, two leaflets, the lower incision is cut into a horseshoe shape, the cut is near the bud, the upper cut is flat, and the cut is about lcm from the lateral bud.

Cutting methods and post-cutting management

Before cutting, uncover the plastic film on the substrate and pour it thoroughly. After soaking the cuttings with 1000-fold carbendazim for 20 minutes, the cuttings were treated with 1000-fold solution of Guoguang naphthalene acetic acid for 30 seconds. Punch the hole with a stick and insert the cuttings into the substrate 1 stroke 3 depth. In order to ensure humidity, the arch shed was made of steel wire and covered with sunshade net after cutting. In the process of rooting, attention should be paid to the temperature in the greenhouse. The temperature of tender wood cutting should be kept at 25 ℃ ~ 28 ℃, the best is 25 ℃, the humidity is 70%-80%, and the film ventilation should be opened when the temperature exceeds 28 ℃. Spray water regularly every day, spray once every half an hour at noon and once an hour at other times. In order to prevent the occurrence of summer rot, carbendazim was sprayed once in 3-4 days within two weeks after cutting. The cuttings began to take root 14-16 days after cutting. after rooting, the light intensity and ventilation time should be increased to make it adapt to the external environment on the one hand and prevent the leaves from getting sick in the high temperature and humidity environment on the other hand. About 30 days after cuttings, the seedlings can be transferred to a nutrition bowl with nutrient matrix for cultivation.

Transplant into the pot

When the root system of cuttings is long enough to be seen at the bottom of the disk, transplant in cloudy days. Preparation of cultivation medium: perlite and peat were mixed at 1:3. After pouring water into the pot, put it in the greenhouse and spray foliar fertilizer once every 10 days for 3 times in a row to make the seedlings pass through the slow seedling stage safely.

Post-planting management

The tender wood cuttage coincides with the high temperature season in summer. Due to the small capacity of the nutrition bowl, the potted soil is very easy to dry, and the root system of the seedlings just on the pot is relatively fragile, so the management of water and fertilizer after potting is very important. Water once every two days within two weeks after putting on the basin, and then once every three days until the basin is changed. At the same time, do not water too frequently to prevent rotting roots. Generally grasp the principle of seeing dry and wet. The nutrient solution should be irrigated regularly. Generally, it can blossom in the same year, and can be transplanted outdoors after refining seedlings.

Huinong School also has more related agricultural technology knowledge, continue to pay attention to Huinong School, and answer questions for you in the planting process.

Seedling raising of Hibiscus hibiscus by tender wood cuttings in summer

Hibiscus (Hibiscus syriacus) is a deciduous shrub or small shrub of the genus Hibiscus of Malvaceae with a height of 3m and 5m. Flowers born in current year's branches, solitary leaf axils, Corolla diameter 5~8cm, trumpet-shaped or windmill-shaped, single, semidouble or double, flowers with lilac, purple, crimson, pink, red, white, blue, etc., florescence from June to October.

Hibiscus is cultivated all over China from the south of Northeast China to South China, but most of them are in the Yangtze River Basin. Hibiscus can bloom continuously for more than 3 months, and it blossoms in summer and autumn. It has long flowering period, large flowers and rich variation. It has a variety of different flower patterns and colors, so it is a very excellent garden ornamental tree species. And because of its strong sprouting and resistance to pruning, it is often planted as a flower hedge or as a background for other low shrubs or clumps in lawns, highway greening belts or forest margins.

Cutting propagation is one of the most commonly used propagation methods of hibiscus, which has the advantages of simple operation, fast seedling growth, high propagation coefficient, low cost and so on. Especially for some excellent varieties, the use of cutting propagation can ensure that their excellent characteristics will not be lost.

Environmental condition

The cutting site is on the seedbed in the greenhouse of the production base, the cutting container is a 72-hole hole plate, and the cutting substrate is a mixture of 1:3 vermiculite and perlite. Before cutting, the substrate should be disinfected with 1000 times liquid carbendazim about 3 days in advance, and then covered with plastic film.

Cutting time and cuttings

The optimum time for softwood cutting should be the vigorous growth period from June to July. The mother plant with strong growth and free of diseases and insect pests was selected, and the branches of one-year-old plants with vigorous growth, good development and free of diseases and insect pests were cut as cuttings. When different growth parts or different branches of the same branch were selected as cuttings, there were some differences in rooting rate and rooting quality. Generally speaking, the sprouting branches at the base of the mother plant are easier to survive and have better rooting quality than the upper branches, and the upper branches of the same branch take root better than the lower branches. Cuttings should be cut along with cutting to prevent water loss and wilting. When making cuttings, the branches should be cut into small segments of 10~15cm, each cuttings have 2 full buds, two leaflets, the lower incision is cut into a horseshoe shape, the cut is near the bud, the upper cut is flat, and the cut is about lcm from the lateral bud.

Cutting methods and post-cutting management

Before cutting, uncover the plastic film on the substrate and pour it thoroughly. After soaking the cuttings with 1000-fold carbendazim for 20 minutes, the cuttings were treated with 1000-fold solution of Guoguang naphthalene acetic acid for 30 seconds. Punch the hole with a stick and insert the cuttings into the substrate 1 stroke 3 depth. In order to ensure humidity, the arch shed was made of steel wire and covered with sunshade net after cutting. In the process of rooting, attention should be paid to the temperature in the greenhouse. The temperature of tender wood cutting should be kept at 25 ℃ ~ 28 ℃, the best is 25 ℃, the humidity is 70%-80%, and the film ventilation should be opened when the temperature exceeds 28 ℃. Spray water regularly every day, spray once every half an hour at noon and once an hour at other times. In order to prevent the occurrence of summer rot, carbendazim was sprayed once in 3-4 days within two weeks after cutting. The cuttings began to take root 14-16 days after cutting. after rooting, the light intensity and ventilation time should be increased to make it adapt to the external environment on the one hand and prevent the leaves from getting sick in the high temperature and humidity environment on the other hand. About 30 days after cuttings, the seedlings can be transferred to a nutrition bowl with nutrient matrix for cultivation.

Transplant into the pot

When the root system of the cuttings is long enough to be seen at the bottom of the disk, transplant it on a cloudy day. Preparation of cultivation medium: perlite and peat were mixed at 1:3. After pouring water into the pot, put it in the greenhouse and spray foliar fertilizer once every 10 days for 3 times in a row to make the seedlings pass through the slow seedling stage safely.

Post-planting management

The tender wood cuttage coincides with the high temperature season in summer. Due to the small capacity of the nutrition bowl, the potted soil is very easy to dry, and the root system of the seedlings just on the pot is relatively fragile, so the management of water and fertilizer after potting is very important. Water once every two days within two weeks after putting on the basin, and then once every three days until the basin is changed. At the same time, do not water too frequently to prevent rotting roots. Generally grasp the principle of seeing dry and wet. The nutrient solution should be irrigated regularly. Generally, it can blossom in the same year, and can be transplanted outdoors after refining seedlings.

Key points of cutting Seedling of Flowers and trees in Spring

From early March to mid-April, it is an appropriate time for cutting to raise seedlings in spring. There are more Rain Water in spring, with high air humidity and moderate temperature, which is especially suitable for the formation of cutting callus and root differentiation. Cuttings in spring have a long growth time, and seedlings that meet certain specifications can be cultivated in the same year. In this paper, several common cutting points of flowers and trees are introduced as follows:

Gardenia jasminoides can be carried out in spring, summer and autumn, but the cutting survival rate is higher from March to April in spring. When cutting, the 1-to 2-year-old twigs were cut from the robust mother plant and cut into cuttings of about 20 cm, with more than 3 nodes in each section, cut off the lower leaves and then quickly dipped in the 500ppm rooting powder solution for 15 seconds, took out a little to dry the solution and then cut it. Before insertion, draw a line on the repaired nursery bed according to the line spacing of 10 cm × 7 cm, punch a hole in the point with a small stick, insert the 2cm 3 of the cuttings into the hole, water and moisturize the cuttings after compaction with the surrounding soil, and carry out weeding and topdressing management after survival. When the seedling grows to about 50 cm, it can be planted in the nursery.

The cutting time of camellia should be from early April to May. Select the semi-lignified, brown branches of the year, cut into 10 cm to 15 cm, cuttings with 3 buds, and cut the base at the lower part of the node. Leave 1 ~ 2 leaves on the cuttings. Immediately after cutting, put the base in clean water to keep the cuttings moist. Then every 50 to 100 cuttings were bundled into a bundle, and the base was soaked in naphthalene acetic acid solution with 100ppm concentration for about 24 hours, then removed and washed with clean water for cutting.

The cuckoo chooses one-year-old branches as cuttings in spring, with a length of 4 cm ~ 12 cm, with a maximum length of no more than 20 cm. Leave the upper leaves of the cuttings to cut off the lower half of the leaves. After soaking the lower part of the cuttings in dilute sugarcane water for 8 ~ 12 hours, the cuttings were washed and rooting was promoted. Soaking cuttings with low concentration of indolebutyric acid 10ppm~20ppm could promote the rooting of the species which were not easy to take root. Cuttage depth: shorter cuttings insert 1max 2, longer cuttings insert 2max 3. The cuttings should be fully watered and often sprayed later to keep the bed substrate moist.

Hibiscus is generally propagated by cutting in spring. When the temperature is more than 15 ℃, select 1-2-year-old strong and ungerminated branches and cut off the segments that grow 15 cm ~ 20 cm. When cutting, prepare a small stick, pre-insert a small hole according to the row spacing, and then insert the hibiscus branches into the soil with a depth of 10 cm ~ 15 cm, that is, the depth of the cuttings is 2 cm 3, compacted the soil, and immediately irrigated after cutting. Be careful not to apply any base fertilizer when cutting.

Crape myrtle carried out hardwood cuttage from February to March. One-year-old strong branches are selected as cuttings, which are 12 cm ~ 15 cm long and 2 cm into the soil. They can take root and survive in May. The survival rate can reach more than 90%, and the height of 1-year-old seedlings can reach about 50 cm.

The cutting time of sweet-scented osmanthus is mostly in February. In order to promote rooting and control diseases, the mother tree was sprayed with 800-1000 times trichlorfon one month before cutting and disinfected with lime water 10 to 15 days before cutting. Soak the base of cuttings in 10ppm naphthalene acetic acid solution for 8 to 10 hours before cutting. Immediately after cutting watering, and maintain a certain degree of humidity, but also in the seedling bed to set up a sunshade net, about 2 months later can take root. It was transplanted once in the second year and out of the nursery in the third year.

From late March to early April, the sturdy branches with a diameter of 0.4 cm ~ 0.6 cm or the overgrown branches of fine plants were cut into 12 cm ~ 15 cm long cuttings. The cuttings can be soaked with different concentrations of naphthylacetic acid before cutting. note that the liquid of the cuttings should not exceed 3 cm at the base of the cuttings. According to the row spacing of 5 cm × 10 cm, the substrate was inserted into the substrate, and the upper 1 ~ 2 nodes of the cuttings were exposed to the bed, which could be covered with plastic film to increase the ground temperature and promote germination.