Li Shu's tender shoot cutting seedlings
Li Shu's tender shoot cutting seedlings, transplant survival rate of 84.6%, rooting rate of 86.5%, now its key technologies are described below.
1. It is advisable to build a shady shed on the north side of a house or a tall building in order to facilitate shading, or use shades of grass, curtains, and other materials to set up shade shelters. At the same time require ventilation outside the shed, good drainage, flat terrain, convenient water source. The cutting shed is an arched shed built on a cutting bed. The materials used are mainly plastic film, bamboo sheet, etc. The height and size of the shed can be determined according to the needs of the nursery. Generally, about 1 meter2 of the available nursery bed can grow about 400 seedlings. The cutting bed is made of 20 cm thick stone or river sand. Lay the bed first, and then water once. After 5 to 5 days, use 50% carbendazim or 58% mancozeb 500 times. Spray the bed surface for sterilization until the bed is wet. until.
Second, the collection of cuttings When the plum tree shoots grow to 20-30 cm above the shoot, you can collect shoots for cutting. Cuttings should be pure, free of pests, and semi-lignified. Cutting length 10-20 cm is appropriate, leaving 2-3 leaves at the top. Then bundled into 10 bundles per 10 to 100 bundles, about 2 centimeters of the base of the bundle inserts are immersed in a 250 mg/l naphthalene acetic acid solution for 1 hour or 1000 milligrams per liter naphthalene acetic acid solution is applied. Insertion).
Third, cuttings and plugs after the management of the pharmaceutical treatment of cuttings should be inserted into the cutting bed. Before cutting, use a small stick or glass rod to make a hole in the cutting bed, and then insert the cutting strip into the hole. The cutting depth is controlled at 5-8 cm. Immediately after plugging, the watering is performed so that the cuttings and the cutting bed are in close contact, and the shed is moistened in time.
After the cuttings, the management of the cutting stalls should be strengthened. Measures such as ventilation in the shed, cold water spraying, shading, etc. should be adopted to keep the bed temperature within the shed at 20-30°C, and the relative humidity of the air is above 90% after about 30-40 days. When there are 10 or more cuttings with roots longer than 5 cm, they can be transplanted into the ground. Before transplanting, it is necessary to control the water, peel off the shadings, etc. for 4-5 days, and then transplant them. During the entire nursery process, attention should be paid to adjusting the temperature inside the shed, especially during the high temperature period at noon. The best method is to spray cool water, but to ensure that the temperature and relative humidity of the air are appropriate, reduce the moisture content of the cuttings, otherwise The cuttings will decay due to poor ventilation. In addition, direct light irradiation should be avoided in the shed, but sufficient scattered light is required. In addition, seedbed sterilization must be thorough.
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