Don't relax the management of peach trees after harvest

Fruit tree production practices show that after peach tree picking, in order to enhance tree nutrient accumulation, promote flower bud differentiation, and lay the foundation for more fruit and big fruit in the coming year, the following measures should be taken for management.

Fertilizer and water management Through underground fertilizer and water management, the tree body can quickly absorb and supplement nutrients. The method is to apply quick-acting chemical fertilizer in time after the peach is harvested. Apply 0.25 kg of urea to each tree in the early fruit stage and 0.5 kg of urea to each plant in the mature tree. . It is necessary to control the amount of nitrogen fertilizer used to prevent the branches from growing out and affecting the differentiation of flower buds. Press green manure once in July. Foliar spray fertilizer combined with pest control, 0.3% to 0.5% urea solution in July, 0.3% to 0.5% potassium dihydrogen phosphate solution in August to September, 15 days apart each time. From September to October, apply a basic fertilizer in combination with deep turning and expansion, with fully mature organic fertilizer as the mainstay, supplemented by ternary compound fertilizer. Apply 50-100 kilograms of organic fertilizer and 0.5-1 kilograms of ternary compound fertilizer for each tree in the early fruiting period, apply 100-200 kilograms of organic fertilizer and 1-2 kilograms of ternary compound fertilizer for each mature tree. The method of fertilization can be ring groove or radial groove, and the fertilization depth is 30-50 cm.

After peaches are harvested, there is usually a lot of rain, so watering is not necessary. If the drought time is too long, water can be used to supplement the moisture. In the rainy season, drainage should be used to prevent waterlogging, cultivating and weeding to prevent soil compaction. Pour frozen water once before freezing the soil.

Pruning at the right time through pruning to make the tree ventilate and transmit light, promote photosynthesis, and form good flower buds. First, thin out dense branches, diseased branches, split branches, overlapping branches, and weak branches to improve the light conditions. Soften the open angle of the upright backbone branches to ease the tree's vigor. The upright and long branches on the back have softened or twisted shoots with growth space, control their growth vigor, cultivate them into fruiting branch groups, expand the fruiting area, and eliminate the growth space. Weak branches that droop after fruiting can be properly retracted to reduce nutrient consumption and promote their renewal and rejuvenation. The long fruiting branches can be shortened appropriately and cultivated into a compact fruiting branch group. At the end of September, pinch the uncapped shoots once to promote tissue growth and enrichment.

Chemical regulation can spray paclobutrazol on the tree crown to control vegetative growth and promote flower bud differentiation. The method is to spray 300-500 times solution of 15% paclobutrazol on the canopy once or twice when the length of the new shoot reaches 30 cm and the second shoot is to be drawn.

Prevention and control of plant diseases and insect pests The main plant diseases and insect pests after peach harvest are bacterial perforation disease, aphids, leaf miners, red spiders, etc., which should be controlled in a timely manner. The prevention and control of bacterial perforation disease should be based on prevention. Starting from the first ten days of June, spray zinc sulfate lime solution on the foliar surface with a ratio of zinc sulfate: quicklime: water = 0.5: 2: 120, once every 15 days, total 4 to 5 times; aphids can be controlled with 10% imidacloprid powder 3000 times or 25% aphid suke EC 2000 times liquid; leaf miners can be controlled with 25% diflubenzuron No. 3 1000 times liquid; red spiders can be used Control with 20% Misijing Suspension Concentrate 3000 times or 1.8% Trimexin EC 4000 times, or 30% Moxifen 2000 times.

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