One, autumn trim

The autumn pruning of apple trees is of vital importance to improve the quality of the fruit of the following year and to ensure stable and high yields. The autumnal pruning of apple trees mainly adopts technical measures such as branching, thinning and light cutting.

(1) Pulling the branches to ease the pulling branches means that the branches that are not suitable for the angle are pulled to the required angle. Generally, the branches are pulled before the autumnal equinox. The pull branch angle generally requires the main branch to be drawn into 70-80, and the auxiliary branch and the temporary branch are drawn into 90-100. The specific situation depends on species, land conditions, and moderate tree power.

(2) Thinning and light-transmission The thinning and clearing branches, the upper and lower branches, the upright branches and the competing branches, and the weak branches. In this period, cutting and cutting are not easy to prevent stripping, which avoids the phenomenon that the more pruning and stripping in winter are more frequent.

(3) Lightly cut and promote flowers Lightly cutting the young part of the new shoot or wearing a short cap at the blind spot at the junction of the spring and autumn shoots can reduce nutrient consumption, contribute to accumulation of nutrients, and promote flowering effect.

Second, autumn basal fertilization can generally be carried out in early September. At this time, the roots of fertilization and cutting can heal quickly and can germinate a large number of roots and increase the absorption rate of fertilizer. Fertilizers are mainly organic fertilizers, with a small amount of inorganic fertilizers. The general young plant strain applies 50-100 kilograms of high-quality soil-fertilizer, and 1-1.5 kilograms of special fertilizer for fruit trees. The mature tree strain applies 150-300 kilograms of high-quality soil-miscellaneous fertilizer and 2-4 kilograms of special fertilizer for fruit trees. Jin Fei. Autumn basal fertilization should not be too deep, not more than 50 centimeters is appropriate, the young fruit tree can be used ditch cast method, Sheng fruit period tree should adopt the whole garden spreading method. If there is a deficiency, the trace element should be mixed into the organic fertilizer when applying base fertilizer. Such as iron deficiency, the ferrous sulfate and organic fertilizer can be fully mixed after the application, such as zinc deficiency, can be combined with Shiji fertilizer applied per plant 100-200 grams, the results of the tree plant 250-500 grams.

Third, the clear garden deep-turning tree tray autumn fruit trees after the leaves, the orchard of dead branches, leaves, weeds, etc. to clean up, concentrated burned to eliminate the overwhelming source of insects and bacteria. It is advisable to deepen the tree tray before the peak of the root growth in autumn. Deeply turning the tree plate at this time, the wound is easy to heal and grow fast, can increase the amount of deep roots, water retention, increase the temperature, but also to eliminate part of the overwintering pests.

Fourth, pest control Apple harvest, the temperature is still high, some bacteria will continue to infect the disease, many pests are also continuing to eat to prepare for the winter, so we should still strengthen pest control work. Pesticides can be used Xiaoling Tao 1500 times or DuPont Wanling 3000 times, fungicides can be used 1.5%, 300 times more anti-mold or Bordeaux mixture, after the defoliation can be sprayed once again 3 degrees lime sulfur and so on.

5. The time for freezing and freezing water should be in the middle or late November. The amount of water should be sufficient to ensure that the trees use water in winter, and at the same time, some of the pests that are overwintering in the soil can be killed.

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