First, the theoretical basis of low-density cultivation of fruit trees 1, the budding of fruit trees has a very high development stage, there is a flowering and solid potential in the nursery. 2. The relationship between growth and development of fruit trees complement each other. The longer the fruit is, the longer the tree is, and the earlier the result is, the smaller the tree is, the higher the production crown, and the earlier fruit is the key to successful cultivation. 3. Using dwarfing anvil, simplifying the backbone of fruit trees, lightly cutting and putting it slowly, opening angles, pulling and cutting, cutting and cutting technology, and other “eight-control technology†to open the way for the success of low density cultivation . Second, the status of low-density cultivation In the past 50 years, especially in the past 10 years, the rapid development of fruit trees is extremely rapid. The planting density of fruit trees commonly used in production is from 56 meters (22 plants per mu) and 45 meters (33 acres per plant) in the 50-60s. The plant became 44 meters (41 plants per acre) and 34 meters (55 plants per acre) in the 70s and 80s. From the 1990s to the beginning of this century, the planting distance was 23 meters (110 plants per mu) and 13 meters (220 plants per mu). The tree shape also evolved from the natural layering of the past, and the happy shape gradually evolved into an improved layered shape, a two-layered happy table, a V-shaped and free-spindle shape, a columnar shape, and a solitary shape. Now we are exploring a more dense cultivation system. It is expected that in the near future, fruit tree stand cultivation and hedge cultivation will be greatly developed. Growing fruit trees is as convenient as growing tomatoes. Planting fruit can be done in the second year of planting, and the crop can be produced in the third year. A cultivation cycle can be completed in 8-10 years. We are experimenting with 660 to more than 1,000 high-density cultivation techniques for many species of trees, which is expected to be successful. Third, the short-stemmed cultivation techniques 1, selection of high-quality flower buds, easy-to-result varieties and short-term varieties. 2, plant seedlings strong seedlings (special seedlings and a seedling). The rows are 12 meters or 13 meters north and south. 4, deep excavation groove foot fertilizer. Deep width 50cm or more. Apply enough organic fertilizer. 5, promote long (1-2 years). Apply organic fertilizer every year. Work hard on tree management and underground management. 6, Wang Wang will be more than 1 meter Wang Jin leveling, tied to each other along the line. Four seasons trim. 7. Promoting flower buds adopts a series of techniques such as cutting, chemical control, formula fertilization and water control. Promote early flowering. 8, adjust the amount of flowers due to tree production, due to quantitative branch, strictly control the amount of results to ensure that the size and quality of fruit. Seriously thinning and thinning fruit.
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