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Rose shoot cutting seedlings
1. Cutting time: In the middle of April, the preliminary test can be carried out from the budding stage of rose to the middle or late August, but after mid-July, the seedlings of the cuttings are of poor quality due to the short growth period. 2. Construction of the seedbed: In the ventilated area, use bamboo poles or wooden poles, bamboo mats or straw curtains, etc., and set up a shade shelter of about 1.5 meters to 2 meters in the east-west direction. Under the shed, a seedbed of 1.5 meters long, 2 meters long, and 0.4 meters deep was built with bricks around the seedbed, and the bottom was paved with bricks. 3, matrix and disinfection: bed matrix with fresh and clean mix of fresh sawdust and river sand or pure river sand, about 10 days before cutting with 40% formaldehyde 200 times disinfection, and then cover the plastic film for 4 days For 5 days, after the film was uncovered for 3 days to 5 days, it was laid on a plug bed with a substrate thickness of 0.25 to 0.30 meters. The experiment showed no significant difference in the survival rate of the two substrates, but it was found that the amount of roots, the survival rate of transplanting, and the growth of the later period were better with mixed substrates. 4. Selections: The cuttings were selected from the same year when they were semi-lignified and robust. The tops of the vegetative shoots were cut in the field from 4 to 6 knots, and they were placed in a water basin to prevent dehydration withering. Buds and flowering period should be selected buds without flowers vegetative branches. 5, cuttings: the top of the field to retrieve the cutting head leaves 3 compound leaves, the lower part of the leaves to handle, and the first axillary buds were side cut into a slant, cut into the matrix, inserted deep 2 cm to 3 cm, a density of 120 Plant ~ 150 plants / square meter, before inserting with 2% to 3% potassium permanganate solution bottoming water, dosage 7.5 kg / square meter to 10 kg / square meter. 6. Management: After cutting, the bed is covered with arched plastic film. Spray water 3 times to 4 times a day, each time spraying 1.5 kg to 2 kg per square meter. Increase the number of water sprays at a temperature of 30°C or more in the hood, and reduce the temperature by proper ventilation. Tests have shown that: When the temperature is between 24°C and 27°C, the cuttings are easy to root. When the atmosphere is dry in the late spring and early summer, the interpenetration bed is flooded once every 1 to 6 days. The rainy season may depend on the situation. The humidity of the substrate is maintained at 70% to 80%, and the air humidity in the hood is maintained at about 95%. It was observed that calli were produced 7 days after insertion, and the rooting rate was more than 85% in 20 days, and it could be transplanted in 25 days to 30 days. 7. Transplanting: Ventilate the seedlings gradually in 5 days before transplantation to remove the plastic film. When transplanting, the seedlings should be raised, planted, and sprinkled with water to prevent root loss and reduce survival. When transplanting, it should be graded according to the quality of seedlings and planted in rows to facilitate the adoption of appropriate management measures to make it grow in the later stages. After transplanting, it was continuously watered 2 to 3 times, and the shade was shaded from 5 days to 10 days. When excavating a ditch or planting a hole, the plowed layer of ripening soil should be separated from the lower layer of raw soil, and the mature soil should be filled in the root when planting. Apply 4,000 to 5,000 kilograms of organic fertilizer per acre and mix appropriate phosphorus and potassium fertilizers with the soil. In order to allow the seedling roots to stretch naturally, after partially filling the soil, the seedlings are gently raised by hand so that the root system is fully in contact with the soil, then the soil is settled and the remaining soil is filled. The planting depth is slightly deeper than the original soil mark of the seedlings. After transplanting, the seedlings shall be weeded and weeded in time. At the same time, attention shall be paid to the prevention of diseases, insect pests and other natural disasters, and the hazards of rust, black spot, and powdery mildew shall be controlled to facilitate the healthy growth of the planted seedlings.