Skillful management of postharvest peaches full of fruit in the coming year

After the peach is harvested, the remaining nutrients produced by the leaves will be transferred to supply the branches, promote the thickening of the branches, tissue maturity and the accumulation of nutrients, so as to create better conditions for flower bud differentiation in the coming year. If properly managed in this period, it can not only increase tree nutrition and improve tree resistance to adverse environment, but also play an important role in flowering and fruiting and tree growth in the following year. Therefore, we should earnestly grasp the following technical measures:

1. After the peach is harvested with reasonable fertilization, fruit-picking fertilizer should be applied in time. The amount of fertilizer applied varies from tree to tree. Generally, for 3-5-year-old first fruit trees, 150 kg of soil fertilizer, 0.5 kg of urea, 0.5 kg of potassium chloride and 1.5 kg of superphosphate are applied to trees, while for 6-15-year-old trees, 300 kg of soil fertilizer is applied to 600 kg of soil, and the amount of chemical fertilizer (compound fertilizer) is calculated as 1 kg for every 10 kg of peach.

Second, ploughing and turning the tree pan is 10 to 25 centimeters deep, gradually deepening outward from 10 centimeters around the trunk, and watering in time to preserve soil moisture. At the same time, eradicate weeds, maintain soil permeability, activate root physiological function, and restore tree potential as soon as possible.

Third, anti-waterlogging and drought-resistant peach trees are not resistant to waterlogging, and stagnant water should be removed in time during the rainy season to prevent disease. The defoliation is finished in the first and middle of November. In case of winter drought, frozen water should be irrigated once.

Fourth, after summer and autumn pruning peaches are harvested, summer pruning will be carried out in mid-late July. The purpose of summer pruning is to improve the light conditions inside the crown and promote branch enrichment and flower bud differentiation. This pruning is mainly sparse, thinning too dense, too strong branches, leaving 1 or 2 secondary shoots, and cutting off the upper unsubstantial part of the secondary shoots, and leaving 35 cm of branches without secondary shoots. Retract the inner bore and branchlets and press them up and down; the horizontal drooping branches should be shrunk at the branches that grow upward in order to enhance their growth; the erect branches and over-dense branches of the vigorous and long branches should be removed. In the middle and last ten days of August, all the new shoots that have not stopped growing are coring or pruning, and the long branches at the dense part of the crown can be cut short at 1pm, 4pm, 1pm.

Fifth, spraying to clear the garden to timely control peach leaf moth, Dendrolimus punctatus, peach small green leafhopper and other leaf-eating pests, you can spray 3000 times of pyrethrin EC or 1000 times of fenitrothion EC. Winter combined with pruning, remove diseased branches, and remove the remaining diseased fruit, withered branches and weeds in the garden, and concentrate on burning outside the garden. In winter, the trunk and main branches will be painted white to prevent freezing and insects. The whitening agent is mixed with 1 kg of quicklime, 300 grams of salt, 500 grams of flour, 200 grams of animal oil and 4 kilograms of water.