Cutting Propagation technique of Michelia mollissima in Guangdong

The study on cuttage propagation and seedling cultivation of Michelia mollissima in Guangdong Province is of practical significance to protect the good quality and breeding of Michelia mollissima, to large-scale production of seedlings in forest farm and to reduce the cost of raising seedlings.

1 materials and methods

1.1 Overview of   pilot sites

The test site is located in Mian Miaopu Farm of Gangping Reservoir in Linchang Mountain of Kuiyang County, Guangdong Province, 112 °30 °54 "~ 112 °33 °49" E, 23 °55 °34 "~ 23 58 °34" N, located in the south subtropical monsoon climate zone, with obvious local microclimate characteristics, large temperature difference between day and night, the annual average temperature is 22.2 ℃, the coldest month is January, the average temperature is 12.3 ℃, and the hottest month is July. The average temperature is 28.7 ℃ and the annual sunshine is 2000 h. Forest farm woodland soil is mainly mountain red soil, lateritic red soil, the soil quality is better, the soil layer is medium and thick soil, medium fertility.

1.2   test materials

The spike is taken from the 2-year-old semi-lignified branch of Michelia mollissima introduced and planted in the forest farm, which requires full leaf buds and no diseases and insect pests.

1.3   trial setup

1.3.1 the experiment on the effect of different cutting time of   on the survival rate of cuttings was carried out on November 16, 2014, June 13, 2015 and March 10, 2016 respectively. There were 3 repeats each time, with 60 panicles per repeat.

1.3.2 the effect of   with different diameter on the survival rate of cuttings the cuttings were cut in 3 batches according to the diameter of cuttings, which were divided into 3 batches, as shown in Table 1. The diameter of cuttings was 2: 3 and 3: 6 mm.

Table 1 number of cuttings with different panicle diameters of   Michelia mollissima

1.4   cutting method

1.4.1   seedbed and substrate

On the hillside of the nursery farm, a semi-shaded plot with an area of about 6m2 was selected to make a bed on the spot. The seedbed was 1.3m wide and 20 cm high. When making the bed, mix the yellow loam soil with carbofuran fully, mix the local yellow loam, perlite and river sand according to the ratio of 6: 3: 1, spread it flat on the bed surface with a thickness of about 8 cm, spray and disinfect the seedbed with 0.3% KMnO4 solution after leveling, and finally pour the seedbed with clear water. Surround the seedbed with a shade net, which is about 1.5 m high.

1.4.2   spike collection and soaking treatment

The length of cuttings was 8-10 cm, and the lower cut was cut obliquely at 2 mm below the node, leaving 2-3 buds. The cuttings were tied into 60 bundles, and the bundles of cuttings were soaked in 100 cm (No. 1) solution with a depth of about 3 mg/L ABT for 1 h.

1.4.3   cuttage and post-cutting management

The oblique cutting method was adopted, the plant row spacing was 3 cm × 5 cm, the cutting depth was 1 × 3, the cuttings were compacted with the surrounding soil, and the cuttings were fully watered and sprayed with 1000 times carbendazim solution. If the light is too strong, cover the shade net with a light transmission intensity of 50% on the seedbed. Drip water once every morning and evening on a sunny day to keep the bed moist moderately. Spray 1000 times of carbendazim or 800 times of 50% methyl mobuprofen plus 800 times of chlorothalonil every 10 days to prevent decay and remove rotten cuttings in time. After the cuttings grow new leaves, we should always pay attention to prevent the larvae of Graphium sarpedon from eating the leaves.

1.5   statistical analysis

After cutting for 2 months, the survival rate was calculated. Microsoft excel 2003 was used to collate the data, and SAS 6.12 statistical analysis software was used for analysis of variance.

2 results and analysis

2.1 effect of   cutting time on the Survival rate of cuttings

There was a very significant difference in the survival rate of cutting among different cutting time (P < 0.01) (Table 2). As can be seen from Table 3, the survival rate of cuttings in the first ten days of March is the highest, the highest survival rate is 66.7%, and the average survival rate is 60.1%, followed by November, the lowest in June, the highest survival rate is 38.3%, and the average survival rate is 33.9%.

Table 2 Variance analysis of cuttage survival rate of different cutting time of   Michelia mollissima

Note: DF is the degree of freedom; SS is the sum of squares; MS is the mean square.

2.2 effect of   ear diameter on the survival rate of cuttings

There was significant difference in cuttage survival rate among different diameter cuttings of Michelia mollissima (P < 0.05) (Table 4-5). The average survival rate of cuttings with a diameter of 2 mm was 38.6%, and that of cuttings with a diameter of 3 mm was 64.5%.

Table 3 comparison of cuttage survival rate of   Michelia mollissima with different cutting time  %

Table 4 comparison of cuttage survival rate of   cuttings with different diameters of Michelia mollissima  %

Table 5 Variance analysis of cuttage survival rate of different diameter cuttings of   Michelia mollissima

3 conclusion and discussion

3.1   cutting time has a significant effect on the cuttage survival rate of Michelia mollissima, and the cuttage survival rate is the highest in March, mainly because the bud time before flowering is long, and March is the full period of buds, with sufficient water and nutrients; on the other hand, the local climate in March is warm, moderate humidity and less diseases and insect pests, which is conducive to cutting rooting and growth. The survival rate of cuttage in June is the lowest, because there are more Rain Water in June, the temperature is higher, Michelia mollissima cuttings are easy to be infected with bacteria in high humidity and high temperature environment, and the phenomenon of cutting block death occurs in the experiment. Cao Zhanbo and other studies show that the cuttage survival rate of Michelia mollissima in early October is the highest, reaching 81.7%, which is inconsistent with this study, which may be caused by different regional climate, site conditions and cutting techniques. Consider to choose the same time in the future for further experimental comparison.

The cuttings diameter of 3.2   had a significant effect on the cuttage survival rate of Michelia mollissima, the Lignification degree of 2 mm cuttings was lower and softer than that of 3 mm cuttings, and the cuttings with 3 mm cuttings had higher Lignification degree, harder, full leaf buds, rich nutrients, larger contact area between cuttings and soil, easy to absorb water, easy to root, and higher survival rate after leaf emergence, which was beneficial to the cultivation of healthy seedlings.

Compared with grafting,   has the advantages of simple operation, low cost and convenient management, so it is very suitable for grass-roots forest farm operation.

The above is the asexual reproduction technology of Michelia mollissima, a forestry science and technology innovation (seedling) project in Guangdong Province. friends who are interested in this research experiment can have a look at it more.

The method of Cuttage Propagation of Magnolia

From ancient times to the present, there is no shortage of people who love flowers. Tao Yuanming loves chrysanthemum, Zhou Dunyi loves Ailian and Li Bai loves you orchid. Flower lovers not only grow their own flowers, but also find ways to transplant them to their own garden when they see their favorite flowers when they go out. However, different flower growth habits are different, cultivation methods will be different. Only when we understand the habits of flowers, can we take better care of flowers. Huang Yulan, the city flower of Yibin City, Sichuan Province, what are its living habits? Can it be transplanted by cutting? The editor will show you something about it.

1. Huang Yilan

Huang Yulan, also known as Huang Lan (plant name map) Huang Magnolia (Guangdong), Huang Menggui (Yunnan) Plate 40:1-7. It is an evergreen tree plant of Magnoliaceae and Michelia. Yellow Magnolia tall and straight branches, up to 20 meters high, young branches, leaves alternate, thin leathery, green leaves, flowers solitary in leaf axils, orange-yellow, flowers simple and elegant, extremely fragrant, fragrance is quiet and sweet, the fragrance is the strongest when budding; the flowering period is long, the temperature is suitable, the flowers can bloom continuously. Have unique growth habits. It is distributed in the south and southwest of Yunnan and is cultivated in all provinces and regions south of the Yangtze River. Give birth to the eldest son in a warm place. Flowers and leaves are the raw materials of aromatic oil, which can be extracted, and the wood is excellent for shipbuilding. Distributed in India, Nepal, Myanmar, Vietnam. Xizang is cultivated in southeastern China, Yunnan, Fujian, Taiwan, Guangdong, Hainan and Guangxi; potted in various parts of the Yangtze River basin, overwintering in greenhouses.

two。 Morphological characteristics of Magnolia paniculata

a. Tree shape: evergreen trees, more than 10 meters high; branches obliquely spreading, showing a narrow umbrella-shaped crown.

b. Buds: buds, twigs, young leaves and petioles are all yellowish flat pilose.

c. Leaves: leaves thinly leathery, lanceolate-ovate or lanceolate-long elliptic, 10-20 (25) cm long and 4.5-9 cm wide, apex long acuminate or subcaudate, base broadly cuneate or cuneate, slightly puberulent below; petiole 2-4 cm long, stipules long above middle of petiole.

d. Flowers: flowers yellow, florescence June-July, tepals 15-20, oblanceolate, 3-4 cm long and 4-5 mm wide; connective of stamens protruding growing tip; pistil hairy; pistil stalk ca. 3 mm. The flowering period of yellow magnolia is very short, and when the flower is in bud, it is blue until the petals grow, revealing the clean white. Once the flowers are white, it means blooming and withering, often for only one day or a day and a half.

e. Fruit: fruit September-October, aggregate fruit 7-15 cm long; follicles Obovate-oblong, 1-1.5 cm long, verrucous protruding.

f. Seeds: 2-4 seeds with wrinkles.

3. The Propagation method of Magnolia

a. High pressure method

Before sinking, select robust and disease-free twigs (1.5-2 cm in diameter) on the mother plant of Cymbidium, cut the cracks in the lower part of the basin fork, then cover them with bamboo tubes or bottomless pots, fill them with culture soil, tie them tightly with string on the outside, be careful not to touch them, often spray a small amount of water, keep moist, and grow new roots around May of the following year.

b. Leaning connection method

The grafting time can be carried out throughout the growing season from spring to autumn. Most of them are carried out from April to July. The best place to lean on is 70 cm from the ground. After being tied up, it is wrapped in a mass of mud and wrapped in leaves to prevent Rain Water from scouring. It can be cut off after about 60 days. Grafting is an easier way to survive, but it is not as exuberant as cutting.

e. Cutting method

Cuttings are not easy to take root, and the yellow orchid cultivated in China can not be harvested because of climate and other factors. Magnolia and yellow orchid can be used as rootstocks for grafting propagation. The rootstocks can be put on the pot in spring and planted on one side of the pot first, so that when grafted, the rootstock is easy to be close to the scion and the grafting position can be reduced as much as possible. The grafting time is the most suitable in the peak season for the growth of Cymbidium; a small amount of reproduction can also be used in the air pressing method, although the number is too small, but the assurance of survival is great.

If you love a flower, you don't have to take it for yourself. if you love it, let it grow well and look at it with appreciation when it blossoms. Huang Yilan is a kind of flower that is easy to raise. As long as you set your mind on it, it can always bloom. The fragrance accompanied by the flowers is really relaxing and exhilarating. Watching it bloom luxuriantly, your heart must be happy. The more Huang Yulan is in bud, the more pleasant her fragrance is, like the shy girl Tingting standing on the branch. If you love flowers, you will love her. I hope this article from the editor can help you.

Guidelines for the maintenance of Michelia mollissima with chlorine absorption effect

Michelia mollissima is an evergreen shrub with bright green leaves and banana flavor, which is admired by people because of its blooming, smiling and silent. There is also a reserved, implicit meaning of fancy language. Michelia mandshurica is native to the provinces and regions of southern China. It is wild in Dinghushan, Guangdong, and is born in the forest of mixed trees on the shady slope. Below Huinong net will talk to you about the environmental protection efficacy and maintenance guide of Michelia flowers.

1. Environmental protection effect

Michelia can absorb chlorine, flowers emit volatile aromatic oil, can play an inhibitory role in Mycobacterium tuberculosis, pneumococci.

2. Maintenance guidelines

(1) Light

Michelia prefers semi-shade to be afraid of strong light exposure, likes warm and humid climate, and is more hardy. Indoor potted plants can be placed in bright areas with more scattered light. Summer should be properly shaded to avoid direct glare.

(2) temperature

The room temperature in winter should be kept at 5-15 ℃. If the temperature is too low, it is easy to suffer frost damage. After suffering from cold, you can cover the basin with plastic bags and put it in the indoor sunny area for maintenance.

(3) watering

Keep the basin soil wet at ordinary times, but never get too wet. Because its roots are mostly fleshy, such as watering too much or basin waterlogging after rain will cause rotten roots, so we should pay attention to control humidity in rainy season.

(4) fertilization

Michelia likes fertilizer, apply fertilizer every 15 days or so in the growing season (April-September), and stop fertilizing after flowering and October. If you find that the leaf color is not bright and thick green, you can apply fertilizer and water for once.

(5) soil

Shaohua likes the deep and fertile slightly acidic soil. The pot soil was mixed with 6 parts of rotten leaf soil, 2 parts of garden soil and 2 parts of yellow sand to prepare culture soil.

(6) Reproduction

Michelia mollissima is commonly used in cutting and striping.

① cuttage

After flower fade, soft wood cuttings were carried out, 8-10cm long branches were cut, the upper leaves were left, and inserted into the basin soil to keep the basin soil moist and shaded, and rooting about 4 months after planting.

② striping

High-altitude pressing was carried out in the rainy season, and it took about 2 months to take root. Michelia is indoor medium-and small-sized potted flowers and trees, suitable for display in the living room and toilet.

The above is the Huinong net Xiaobian collation on the environmental efficacy of Michelia flowers and conservation guidelines, Michelia flowers can absorb chlorine, family breeding is also a good choice.