In the summer, the apple's comprehensive management technology during the peak of growth is hot and rainy in summer. Apple trees are at the peak of growth. With the increase of rain, the autumn shoots are prosperous and the fruit quickly expands. During the period of orchard management, there are mainly five items:
I. Continue summer trimming. Sparse branches and cross branches. The result of a large amount of trees to carry out the top branches, hanging branches, in order to prevent the split fracture. To control the longevity tree and promote the formation of flower buds, from the early stage of autumn shoot growth, every 10-15 days, the prosperous long apple trees are sprayed with PBO 200 times liquid paclobutrazol 150-200 times 2-3 times to control autumn. Slightly prosperous, promote full flower buds.
Second, spraying foliar fertilizer. The leaf fertilizer with good effect has odd amino Amino Acid fertilizer and Tianda 2116. It can be mixed with most alkaline pesticides and fungicides and sprayed at least twice. The interval time is about 10 days.
Third, under the tree top dressing. Generally every fruit produced by each fruit 2-3 kg of fruit tree special fertilizer. For mid-maturing varieties, we must do a good job of anti-fruit drop before harvest. From early August, spray 30-40 ppm naphthylacetate solution. When there is a large amount of rainfall, drain it in time to prevent fruit trees from being soaked in water for a long time. At the onset of the rainy season, under the canopy of the trees, powdered straw, wheat straw, wheat bran, etc., can be applied to the canopy, or stalks can be covered under the trees.
4. Weedy orchards can be chemically weeded. Per acre spray 10% glyphosate 0.5 kg, 30-40 kg of water, spray a small amount of detergent added to improve efficacy. When spraying herbicides, care should be taken not to spray on the leaves and fruits of fruit trees to avoid phytotoxicity.
In addition, in recent years, brown spot has been severely occurring in the apple orchard of Zhongnannan, and benzidin, sterilizing, strong ringworm and other systemic fungicide can be used alternately with Bordeaux mixture.
5. In the event of a hailstorm attack, spray fungicide and foliar fertilizer in time. The first is to remove unrecoverable rotten fruit, prevent the fruit from being hurt at the wound and increase nutrient supply, and promote wound healing. The second is the damaged parts of the branches damaged by the hail. Remove the skins and break the skin. Then use a 20-30 times liquid to brush the fruit, and apply the fruit fuling ointment to protect the wound.
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