Osmanthus is a deciduous tree evergreen tree. The branches and leaves are green and graceful. They are fragrant and fragrant when the flowers are open, and are fragrant and fragrant. The flower is edible and refined. It is an important garden and economic tree species in China and has high ornamental and economic value. Because Osmanthus fragrans is rare and difficult to obtain, and grafting is not ideal, it is mostly used for cutting propagation. Among them, the use of tender shoots for cutting seedlings has the advantages of convenient material acquisition, simple operation, and high survival rate. The technical points are now described as follows:
Cutting time
It should be carried out from mid-May to mid-July and mid-September to mid-October. At this point, the shoot has stopped growing, and the branches contain more nutrients. The branching ability of the branches is strong, and at the same time, the temperature is suitable, and rooting is easy after cutting.
Slotting preparation
It is advisable to use the former as the light loamy cultivated land of rice as a nursery site. Deep cultivating the bed requires a bed width of 120 cm, a bed height of 25 cm and a ditch width of 40 cm. The soil should be finely crushed, the bed surface should be flat, and the channel should be clear. Cover the bed with a plastic film awning 50 centimeters high above the bed, and then cover it with a shed of 180 centimeters high from the bed and about 35% light transmission.
Cutting acquisition
The excellent plant that grew vigorously, free of pests and diseases, was the mother tree of cuttings, and the current year-old semi-woody shoots at the upper part of the crown were cut to scion. The scion should be bundled into small pieces at the calibrating level, and the base bag should be brought back to the room with wet toilet paper.
Cutting treatment
The cuttings were cut into 8 to 10 cm long, and 2 leaves were cut and cut in half; the upper end was cut into a flat mouth, and the base was cut into bevels and bundled into small handles. The base portion 3 cm below was immersed for 5 minutes; 105 naphthalene Acetic acid for 1 minute; 10 to 4 ABT rooting powder solution 1 hour soaking, and then remove the cuttings.
Cutting operation
The cuttings should be divided by diameter (segment). With a row spacing of 5 cm and 10 cm, first insert a thick wooden pick on the insertion hole and insert the lower 2/3 of the cutting into the hole to compact the soil around the cutting. Finally, a 0.01% carbendazim solution was sprayed through the bed for 1 time to disinfect the soil and provide moisture.
Post-insert management
Water spray and shading
When water-free beads and bed soil in the shed film are dry, they should be moistened with water. High-rise shade awnings were covered in the early morning; the relative humidity in the membrane shed should be kept above 85%, and the temperature should be controlled at 18°C ​​to 30°C. If the temperature is too high and the humidity is too low, it can be adjusted by removing the cover material and increasing the water spray. If the temperature is low and the humidity is too high, it can be controlled by closing the membrane and reducing the water spray.
Spraying and loose soil
In combination with water spray, spraying 5 times every 7 days; 10 to 4 aqueous solutions of carbendazim 1 times to prevent the cuttings from infecting bacteria and causing cortex rot. Loosen the bed frequently to maintain good permeability of the soil and prevent the decay of the cutting roots due to lack of oxygen.
Trim and Fertilize
Must promptly erase the germination of the cutting base to reduce nutrient consumption. In combination with water spray, 0.2% urea or potassium dihydrogen phosphate solution was sprayed once every 10 days to promote root and shoot growth.
Demolition and transplanting
In summer, the sheds can be removed in October, and Hunchun can transplant Daejeon nurseries. In the autumn, the arbors can be removed in the spring of the following year and transplanted into the Daejeon nursery in the early summer. Summer and autumn can be inserted in bed for 1 year. The following winter, the seedlings are as high as 30-50 cm, and they can be planted in nursery or nursery.
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