Apple tree autumn management points
Autumn is the fruit development and full maturity harvesting period of apple trees, and it is also a key period for nutrient accumulation and flower bud differentiation of apple trees. Strengthening management during this period can increase the output of the year, improve the ability of wintering and cold resistance of trees, reduce pests and diseases, and lay the foundation for the harvest of fruit trees in the coming year. Specifically, you should master the following technical points:
I. Topdressing In early September, a quick-acting phosphorus-potassium fertilizer was applied to late-maturing varieties, and 1.5 kg to 2 kg per plant was applied. At the same time, 0.3% to 0.5% potassium dihydrogen phosphate was sprayed once every 10 days from now on. Continuous spraying 3 times to promote the maturity of new shoots, promote fruit coloring and increase content. After harvesting the fruits of the mid-late maturing varieties, spray 0.5% to 1% of urea solution or 0.3% to 0.5% of potassium dihydrogen phosphate solution every 10 days, and spray 3 times to prevent premature leaf detachment.
Second, the prevention and control of pests and diseases in a timely manner to prevent pests and diseases, found that the rotten fruit was removed and buried in time.
Third, early application of base fertilizer from late September to early October, before the harvest of apples using circular trench or deep digging method, each plant results in 200 kg of farmyard manure, and force 1? spear? .5 kg of quick-acting nitrogen, phosphorus and potassium compound fertilizer. When fertilizing, replace the position of fertilization in the previous year and combine it with irrigation.
Fourth, the pruning branches should be lightly trimmed in the autumn, highlighting five key points: 1. The current upright new shoots are softened to make them horizontal; 2. Eliminate dense branches, erect branches, overlapping branches, competitive branches, etc., to improve the lighting conditions; For the two-year growth of the branch at the junction of a two-year-old, "wearing a cap" to promote the formation of two-year-old shoots; 4. The auxiliary branches were leveled; in the middle of 5.9 months, the prolonged branches of all the vegetative shoots were cut off to the younger parts of the autumn shoots, reducing nutrient consumption.
5. Deep-turn irrigation should be deep-turned when the new shoots of the fruit trees stop growing, and the depth should be 20 cm to 40 cm. Before the winter, the winter water is filled, and it is necessary to fill the water.
Sixth, scraping off the old skin tree after the dormant period, scraping the skin, you can scrape the wintering pests such as the small leaf moth larvae and the red spider spiders hidden in the skin. The scraped belt was burned out of the garden.
VII. Main Whitening The prepared whitening agent is evenly formed on the trunk of the apple tree, and the white height is applied to the main branch, which can effectively control pests and diseases.
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