Peach in time after harvest
"After the peaches are harvested, the main work of this period is to raise trees, trim the trees, and postpone the time of deciduous leaves, so that the leaves can produce more organic matter, and lay the foundation for the tree's resistance to drought and freeze, the differentiation of flower buds in the coming year, and the yield." On June 23, at the thousands of acres of white flower fragrant peach planting base in Fulong Village, Xinle Town, Naxi District, Luzhou City, agronomist Yang Zuojin made a special trip to Taoyuan to check the tree growth and guide the management techniques of fruit farmers after harvesting peaches.
prune
The purpose of peach tree pruning is to improve the light conditions inside the crown of the tree, and to promote branch filling and flower bud differentiation. When pruning, the principles of cutting small branches and not large branches, cutting current branches and not perennial branches, early and late shears, light and heavy shears, and a small number of times should be followed. This time the pruning is mainly sparse, over-dense and over-twisted branches are removed, and the remaining strong branches are left with 1-2 auxiliary shoots, and the auxiliary shoots are cut off the upper unfilled parts, and the branches without auxiliary shoots are cut to 35 cm. Retract the inner bore and twigs of the inner bore, press up and push down; the horizontally pendant branch group should be shrunk and cut at the branch of the strong branch that grows upward to enhance the growth; the erect branch and the long branch group Excessive branches should be removed. In the middle and late August, all new shoots that have not stopped growing are topped or cut, and the long branches with dense crowns can be cut short at 1/4-1/3. In addition, remember that peach branches should not be over-trimmed, otherwise it will cause fruit branches to fall.
Fertilize
After the peaches are harvested, weeding should be combined with fertilization. For peach trees with many fruits and high nutrient consumption, apply early and reapply. Dig an annular ditch around the canopy, with a depth of about 40-50 cm. The amount of fertilization depends on the tree. Generally, the initial fruit trees are 3-5 years old. The soil is 150-200 kg of soil fertilizer, 0.5 kg of urea, 0.5-0.75 kg of potassium chloride, 1-1.5 kg of superphosphate; 6-15 years old. For the fruit-growing trees, 300-600 kg of soil and fertilizer are applied, and the amount of chemical fertilizer (compound fertilizer) is calculated as 1 kg per 10 kg of peach. For peach trees with root rot and weak growth, you can use microbial fungicides to irrigate the roots during fertilization, kill the roots and the roots near the roots, and promote wound healing.
Branch care
After the peach is harvested, the remaining nutrients produced by its leaves are transferred to the branches to promote thickening of the branches, tissue maturity, and accumulation of nutrients, creating better conditions for flower bud differentiation in the coming year. Properly managed during this period, it can not only increase the nutrition of the tree and the resistance of the tree to the bad environment, but also play an important role in the flowering and growth of the next year and the growth of the tree. For the peach trees that have flowed glue before, wounds on grafted parts and branches, and weak growing trees, they must be rehabilitated before falling leaves to effectively promote wound healing.
Foliage treatment
Before the peach leaves fall, it is the storage period of the nutrients of the peach tree, and it is also the key period to increase the chlorophyll content of the leaves. The high content of chlorophyll can not only produce more nutrients, but also prevent the occurrence of peach perforation, brown spot and other diseases. Therefore, before the peach leaves fall, bio-red plus potassium dihydrogen phosphate can be sprayed on the foliage, diluted 500 to 1000 times, sprayed once every 20 days, a total of two times.
Spraying the garden
To prevent and control leaf-eating pests such as leaf miner moth, sky caterpillar, peach green leafhopper, etc. in time, you can spray 20% 3000 times solution of pyrethrin emulsifiable concentrate or 1000 times solution of stem moth EC. Combine pruning in winter to remove diseased branches, and remove diseased fruit, dead branches and weeds remaining in the garden, and burn them outside the garden. In winter, the trunk and main branches are painted white to prevent frost and insects. Use 1 kg of quicklime, 0.3 kg of table salt, 0.5 kg of flour, 0.2 kg of animal oil, add 4 kg of water and mix well.
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