The period from peach fruit picking to defoliation is the key period for peach nutrient accumulation and flower bud differentiation. The management will directly affect the peach wintering ability and the second year's growth results. Therefore, fruit growers should pay attention to the management of peach trees after fruit harvesting. 1, fertilization. Early and medium-maturing varieties of early fertilization after fruit picking, especially the results of excessive trees should be applied early, late-maturing varieties of fruit before harvest. The types of fertilization were mainly mixed with high-quality organic fertilizers of nitrogen, phosphorus and potassium compound fertilizers and micro-fertilizers. In case of autumn drought should be timely irrigation. In addition, the combination of spraying can be used for extra-root dressing, supplementing nutrition. Pay attention to the following principles when fertilizing: 1 The time for applying basic fertilizer in autumn is early: The basic fertilizer for peach trees is generally suitable for mid-September. The soil temperature during this period is relatively high, and the root regeneration ability is strong, and the root recovery is fast. At the same time, the conversion of fertilizers is fast, which is beneficial to the absorption of the tree and can increase the storage nutrients of the tree. 2 The depth of fertilization should be shallow: the roots of peach trees are mainly distributed in 20-40 cm soil layer, and the depth of fertilization ditch or fertilizer hole is 30-40 cm. 3 should be broad fertilization surface: peach root aerobic than apple trees and other fruit trees should be appropriate to increase the area of ​​fertilization, expand the root absorption area, improve the growth environment of the roots, improve the root absorption function. Base fertilizers in production should be combined with soil amendments. The specific method is: Dig fertilization ditch around the circumference of the crown, the width of 40 to 60 cm, depth 30 to 40 cm, and pay attention to the location of fertilization year after year, usually 3 to 4 years to complete the soil improvement. 4 base nutrients should be all: peach base fertilizer should be manure, cake-based, and according to the nutritional status of the tree, with a certain amount of fertilizer applied. 5 Base fertilizer should be sufficient: peaches have a higher fruit setting rate and require higher soil nutrient requirements. Sufficient basal fertilizer is the basis for a robust, productive and stable peach tree. According to our investigation, the initial fertilization amount of the tree was: 2000-3000 kg of high-quality farmyard fertilizer per acre and 20-30 kg of compound fertilizer. The fruit fertilization amount in the fruit period is: 4,000-5,000 kilograms of high-quality farmyard fertilizer per acre and 40-50 kilograms of compound fertilizer. 2, spraying. In order to protect the leaves, it has a strong photosynthesis and is conducive to the accumulation of nutrients. After the fruit is harvested, it should be focused on prevention and control of peach leaf perforation, peach aphid, spider mites and leaf miners. Control: 50% carbendazim 800 times solution is available, plus 40% Dimethoate 1500 times solution. 3, trim. Crossing branches, overlapping branches, diseased branches, and thin and weak branches within the canopy are given away. The method of short shoots is often used. Generally, the long fruiting shoots with medium growth are appropriately short-cut, and the results are obtained. The new shoots near the stems are selected for heavy short cuts to make new fruit shoots. At the same time, the retraction of the branches caused the lower single buds to draw strong branches. 4, cultivator. After picking the fruit, the cultivator loosened the soil and weeds in a depth of 10-15 cm. After clearing the garden after defoliating, weeds and deciduous trees are buried under the tree after spraying insect pests. In Taoyuan, where flat land, low-lying land, and heavy soil or weeds are present, it is necessary to pay attention to the drainage system before the rainy season, reduce the groundwater level, remove weeds, and avoid accumulation of water. 5, Qingyuan disinfection. Cut dead branches, scrape skins, shovel weeds, sweep leaves, harvest crackers, and burn them together. In winter, fruit trees, diseases and insect pests are buried in leaves, dead branches and soil in winter through different forms. In the clear garden, branches, diseased leaves, and diseased fruits that are damaged by dead branches, leaves, and pests should be completely burned to reduce the winterization of diseases and insect pests. Base number. Disinfection was sprayed from December to the end of January of the following year, and Baume 5-degree lime sulfur was carefully sprayed one by one for disinfection. In the orchards with more scale insects, they can spray 5% diesel emulsion or 18 to 20 times rosin lipids, and then spray lime sulfur mixture again in January.
