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.

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.

The main results are as follows: 1. the cutting time of sweet-scented osmanthus in summer is from May to July, when the temperature is lower and the evaporation is less from 6 to 9 o'clock in the morning and 4 to 7 o'clock in the afternoon.

Second, prepare the seedling bed for sweet-scented osmanthus to like warm, moist, fertile and well-ventilated acidic soil, and the bed soil should be ploughed and raked deeply to make a high bed. Make a seedbed in a place with good drainage and convenient irrigation.

Third, when cutting sweet-scented osmanthus cuttings, we should choose excellent varieties of female parent trees with strong growth, cut the strong semi-lignified branches in the upper periphery of the crown, remove the young parts at the top, and cut them into cuttings about 10 cm long. Leave 2 to 3 pairs of leaves at the top of each cuttage, and all the basal leaves are cut off.

4. Rooting treatment soaking the cuttings base with 500ppm acetic acid solution for 5 seconds, or soaking the cuttings base with 40% ABT rooting powder solution for 2 hours, or 0.01% aspirin for 4 to 5 hours, can promote rooting and improve the survival rate.

Fifth, the cutting method before cutting, the seedling bed is watered thoroughly, and after being hydrophobic, it is cut. The distance between rows of plants is 3 cm × 5 cm, and the depth of cuttings is about 6 cm. Watering after insertion promotes the close knot between the land and cuttings.

Sixth, nursery bed management after cutting, timely build a shade shed to moisturize, to prevent high temperature and bright light. Nursery bed to maintain 20 ℃ to 28 ℃, relative humidity 80% to 90%, high temperature should be aerated, spray humidification, cooling and drought prevention. Under the condition of suitable temperature and humidity, it can take root in about 1 month, gradually remove the shade shed, increase the light, and timely watering or spraying water to keep the soil moist and promote growth.