Cutting technique of Osmanthus fragrans

Sweet-scented osmanthus tree cutting technology, cutting has the advantages of easy material acquisition, simple operation, saving propagation materials, high propagation coefficient and so on, and the survival rate can reach more than 80%.

1. Prepare the sweet-scented osmanthus tree bed

The bed inserting machine should choose the place with higher terrain, good drainage and near water source. The seedbed is 1 meter wide and unlimited in length, but generally no more than 20 meters. The sides of the slotting machine are stacked with bricks, 10 to 25 centimeters above the ground. The bed is covered with a matrix 10 to 20 centimeters thick. The matrix can choose slightly acidic sandy loam, river sand, peat and so on.

2. Selection of sweet-scented osmanthus cuttings.

Cuttings should be 10-15 years old, the middle and upper part of the crown, strong growth, no disease and insect harm of the current year branches, the length is generally about 10 cm. The upper end of the cuttings has a pair of leaves, the lower end is cut from 0.5 cm below the node, and the cut mouth is slightly inclined. Cuttings should be cut along with cutting to prevent water loss and wilting.

3. Cutting methods and post-cutting management of Osmanthus fragrans.

Pour water once before insertion, generally multi-row insertion, line spacing of 10 cm, plant spacing of 5 cm, 200 plants per square meter. Insertion depth: the long spike is generally inserted into 2 beat 3, while the short spike is all inserted, and only the upper buds reveal the matrix. The cuttings are immediately watered to make the cuttings and substrate denser.

After cutting, set up an arc arch shed above the nursery bed, the roof is 50 cm away from the bed surface, cover the shed with plastic film, and build an elevated shade shed 1 meter above the plastic roof, and hang curtains on the east, south and west to prevent side light.

The transmittance of the slotting bed is kept at about 30%, the temperature is controlled at about 25 ℃, and the air is ventilated for 1-2 hours every morning.

The cuttings can heal and take root 30-50 days after cutting, the shading time can be reduced after 60 days, and then the shade can be completely removed. The above is the cutting technology of Osmanthus fragrans.

Cutting techniques of Osmanthus fragrans

For the cutting technology of sweet-scented osmanthus trees, sweet-scented osmanthus trees are often cut in spring, plum season or autumn, but plum cuttings are mostly used in the south, which can take root quickly and have a high survival rate. The specific cutting time is different due to local climate and fertilizer and water management, and the best cutting time is based on the semi-Lignification of spring and summer shoots, because the nutrient storage of branches is the most abundant and the meristem meristem has strong meristem ability.

(1) preparation of sweet-scented osmanthus tree bed

Light loam cultivated land should be selected for deep ploughing to make bed. Require bed width 120 cm, bed height 25 cm, channel width 40 cm, to achieve fine broken soil, flat bed, smooth channel. If there is a deep layer of yellow soil without weed seeds, it is best to cover the original soil with a layer of 5 cm thick yellow soil, which can reduce the occurrence of weeds and diseases. The upper and lower sheds are built above the bed, that is, the plastic shade arch shed 50 cm high from the bed surface and the shade shed 1.8 meters high from the bed surface, and the light transmittance of the shade net is 50%.

(2) cutting time of Osmanthus fragrans

It should be carried out from mid-May to mid-June. The specific time is the time when the new shoots stop growing.

(3) collecting cuttings of Osmanthus fragrans.

The excellent plant within 6 years old with exuberant growth and no diseases and insect pests was selected as the ear-picking mother tree. In the morning, the semi-lignified shoots of the upper part of the periphery were cut as cuttings.

(4) cuttage treatment of Osmanthus fragrans

Cut the cuttings into about 5 cm long, keep 2 opposite leaves in the upper part, and cut off the rest. If there is a rooting agent, it is best to treat it before cutting, which can shorten the rooting time of cuttings.

(5) cutting operation of Osmanthus fragrans.

Cuttings should be divided into beds (segments) according to diameter grade. With a row spacing of 5 cm × 10 cm, the cuttings were inserted into the soil with a depth of about 2 cm, watered through the seedling bed with clean water, and then sprayed with 1000-1500 times carbendazim solution. After disinfection, the soil and spikes were immediately covered with a small arch shed.

(6) Post-planting management of Osmanthus fragrans.

When there are no water droplets in the greenhouse film and the bed is dry, it should be sprayed to moisturize in time. Generally uncover the film in about half a month, if you find that the humidity is not enough (the relative humidity is maintained at 85%), sprinkle water, and after the leaves are slightly dry, use 1000 times liquid carbendazim to spray to prevent the disease. At the same time, combined with spraying, 0.2% urea or potassium dihydrogen phosphate solution can be added to promote cuttings root and shoot growth. If it is cloudy and rainy for more than a week, the lower shading net should be removed to increase the light transmittance.

After sweet-scented osmanthus cuttings, it usually takes 1-3 months to take root (1.5-month rooting of four-season osmanthus and 2-month rooting of gold and silver cinnamon). When 80% of the cuttings take root, take off the underlying shade net and plastic film to refine the seedlings in cloudy and rainy days; if it is sunny, remove both ends of the plastic film for ventilation for half a month, and then remove the underlying shade net and plastic film. The new shoots of the seedlings have grown before the end of October. According to the weather conditions, the high-rise shade canopy is removed in time on cloudy days or in the evening (usually Cold Dew), and the seedlings can be transplanted to the field nursery in the next spring.

Cuttage techniques of Osmanthus fragrans cutting of Osmanthus fragrans in Summer

Sweet-scented osmanthus cuttage in summer is one of the main means of large-scale propagation of sweet-scented osmanthus. It staggers the busy season of raising seedlings and afforestation in spring, but arranges the seedlings in summer when production is relatively idle, and has sufficient time for operation. therefore, the summer cutting of sweet-scented osmanthus has a high efficiency in production. In this paper, the techniques of cutting seedlings are introduced as follows:

1. Nursery preparation: if there is a planned land use, you can dig deeply twice in winter and prepare a seedbed with a height of 20 cm and a width of 90 cm. You can also make use of the open space left after the spring seedlings come out of the nursery to arrange production, turn over deeply and pick out the roots and other sundries; when the spring seedling production is over, you can also make a seedbed with a height of 20 centimeters and a width of 90 centimeters. In the first ten days of June, the weeds on the seedling bed were eradicated, then disinfected with 1 ∶ of formaldehyde solution, and turned over deeply to make a turtle back-shaped seedbed with slightly higher middle and lower sides.

2. Collection and treatment of seed strips: sweet-scented osmanthus cuttings in summer are generally from mid-late June to early July, when the new shoots of sweet-scented osmanthus have stopped growing, but they are not yet mature and are in a semi-Lignification state, and the internal cell division of the branches is active and easy to take root and survive. Early cutting, young branches are not easy to survive; too late cutting, the branch internal cell division tends to stop, it is not easy to take root and survive. Cuttings should be collected from mother trees with good varieties and strong growth. fine and weak branches, inner bore branches and disease and insect branches can not be used as cuttings. It is best to cut seeds on sunny mornings or cloudy days, but not on dry and rainy days. The collected cuttings should be shipped back in time, spread out in a cool place, sprinkle with a small amount of water, and then covered with soaked cotton cloth to moisturize. Cuttings are generally cut from 10 to 15 cm, and 2 to 3 leaves are retained at the top of cuttings; a slightly skewed cut is cut at the lower end of cuttings, which should be smooth to facilitate cutting and healing and rooting. The cut cuttings are aligned at the bottom and tied up in a bundle of 30 to 50 plants. Then put the cuttings neatly and vertically in the prepared 100ppm naphthalene acetic acid solution or ABT rooting powder solution, generally soak for 6 to 8 hours, wash the roots with clean water and then cuttings.

3. Cuttage and post-cutting management: cuttings are cut according to the density of plant spacing 4 to 6 cm and row spacing 15 to 20 cm; the soil depth is generally appropriate in the length of 1-2 to 2-3 of the cuttings. After cutting, water with a needle-eye sprinkler until thoroughly, so that the cuttings can be closely combined with the soil without gaps. Moisture is the key to the survival of softwood cuttings in summer, so it is necessary to do a good job in water regulation and management. Shading net should be set up immediately after cutting, and the transmittance should be 30% to 50%. The height of shading net from the seedling bed is generally 130 to 150 cm, which is not only conducive to moisturizing and cooling, but also does not affect production management. In addition, it is necessary to pull grass, water and loosen the soil in time. It is generally observed that the topsoil of the seedbed can be watered when it begins to dry, and every time it must be watered thoroughly; but do not water too much, otherwise it is easy to cause soil hardening, mold growth and affect rooting and survival. Generally speaking, it is necessary to loosen the soil in time after rain to ensure that the soil is loose and breathable, which is conducive to rooting, but do not encounter cuttings when loosening the soil. In mid-to-late October, the shade net can be removed when the weather is cool, but pay attention to watering during the autumn drought. In this way, the sweet-scented osmanthus can be out of the nursery or transplanted the following spring.