1. Colonization: Dig a planting hole with a depth of 100 cm, 80 to 100 cm in length and width, 20 cm of orange straw, and 25 cm of fill soil at the bottom of the hole. Apply 1 kilogram of organic dry chicken fat to phosphate fertilizer. 1 kg, 0.25 kg compound fertilizer, mixed with soil. The seedlings with a height of 70 cm, a stem thickness of 0.5 cm, a well-developed root system without lesions, and a density of 4 mx 5 m are preferred.
2, fertilizer and water management: l a 2-year-year tree every year in October and October digging ring ditch, strains of high-quality farm fertilizer 25 kg, 0.5 kg compound fertilizer, biological potassium fertilizer 0.2 kg. 3-4 years old trees, fruit trees Each year in early September each year, 1.5 kg of dry chicken fat, 1 kg of compound fertilizer and 50 kg of farmyard fertilizer are applied. Pay attention to drought relief.
3. Pruning tree shape: adopt a happy type, when the seedlings are planted in the same year, the seedlings are set at 60 cm. When the new shoots are 30 cm in length, strong shoots with a distance of 40 cm or more and 3 to 4 positions are selected as the main branch culture. All other shoots were cut off. When 60 centimeters of main branch length were selected, 40 centimeters of short cuts were left. The main branch was cultivated, the branches were lengthened, and the branchlets were retained to cultivate the resulting branch groups. In the winter, the main branch was extended by 40 centimeters and the lateral branch and extension branch were short by 30 centimeters. The long branch was removed. In the 2nd and 3rd year of pruning, in the same year as the first year, after 3 years of shaping, the stem height was 40 cm, with 3 to 4 main branches and 6 to 8 lateral branches. The result was that the branches reached a reasonable distribution of trees.
4. Flower and fruit management: A large amount of crisp and plum blossoms should be timely fruit thinning, and it is usually more appropriate to spend 15 to 25 days after flowering. Grasp the long fruit branches to stay 5 to 10, the middle fruit branches to stay 4 to 8, short fruit branches to stay 3 to 5, as far as possible to remove the fruit, malformed fruit, small fruit.
5. Pest control: The major pests and diseases of the crisp and clear plums are fluidosis, perforation, aphids, and litho bees. Before spraying, Yangkang No. 7 insecticide was used to control all types and aphids. After spraying, Yangkang No. 6 insecticide was used to control the Lishi bee. In April, spraying thiophanate-methyl fluoride 800 times to prevent fluidic diseases, 5-6 June sprayed 65% of dexamethasone zinc to prevent perforation.
Educational unit which is used for simulator education and test. This unit can be used in multimedia education and false tooth repair, it is the necessary unit in Stomatology college and laboratory. ES600 is an outstanding simulator education unit. The phantom head can be fully moved up and down, rise and fall by electricity. Two sets of memorial position can be setup freely. With function of moving up and down, rise and fall, the user can take clinic simulator test and finish 9 degree and 12 degree education. The user can feel real during the simulator test process.
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