Density, topping. Remove leggy branches, erect branches, dense branches, and slender branches within the canopy. Keep the interior of the tree crowns airy and transparent. For the purpose of cultivating the tree shape for the purpose of cultivating the tree shape for the purpose of cultivating the tree shape, light-heart cutting is performed to reduce the nutrient consumption, so that the shoots grow sufficiently and robustly to ensure safe wintering.
Promote fruit coloring. In late August to early September, the bagged fruit was timely bagged, and the bag removal time was 20 to 25 days before mature harvesting. At this time, bag removal was most conducive to fruit coloring and sugar content increase. Go to the bag to choose cloudy or sunny after 4 pm. If the sleeve is a double bag, remove the outer bag first and then go inside the bag 3 to 5 days apart. The bag should pay attention to the weather, beware of skin burn caused by high temperature and strong sunlight, reduce the value of fruit. After spraying the bag, the fruit colorant should be sprayed in time to promote the coloration of the fruit. Picking leaves and turning fruit is an auxiliary measure to promote the coloration of pomegranate. When the leaves are removed, the bags are removed and the leaves that cover the direct sunlight are removed and the small branches that cover the fruits are removed. Turn fruit to see the light on the backside of the fruit to ensure uniform coloring of the entire fruit. Some fruit stems are short-stemmed and can not be rotated. The position of the mother branch can be rotated by pulling, dropping, hanging, etc. to make the back of the fruit look light colored. Reflective film is also an important measure to promote the coloration of pomegranate. From early September to pre-harvest fruiting, the silver reflective film under the pomegranate tree or tree line can significantly increase the light intensity in the canopy and middle and lower part of the canopy, and increase the coloring area and quality of the fruit.
Prevent cracking. 10 to 15 days before harvest, strict control of watering, especially in dry mountainous areas, hilly orchards, and irregular irrigation of orchards in the plains, long-term drought should be harvested in time after the rain. Spraying 25 mg/L gibberellin in late August and early September will reduce cracking by more than 30%.
Cultivate strong tree vigor and promote flower bud differentiation. Pomegranate has a large amount of fruit, or the soil is insufficient for fertilizer, and the pests and diseases are severely harmed. It is easy to make the tree prematurely decay. In the middle and late September, it is the second peak of flower bud differentiation of the pomegranate tree. The flower bud differentiation in this period directly affects the output of the second year. Therefore, it is important to take measures to promote the robust growth of the tree. To promptly chase fast-acting fertilizers, pay attention to nitrogen and phosphorus, apply appropriate potassium, apply topdressing urea, superphosphate 0.25 kilograms each, foliar spray 0.2% to 0.35% organic potash or multiple Micro fat.
Control fertilizer and water to maintain normal tree growth. In the management of fertilizers and waters, it is necessary to “promote and control afterwardsâ€. It is necessary to ensure the normal growth of the tree to meet the needs of various nutrients, and to prevent prolonged growth. Therefore, the early stage of nitrogen fertilizer, with phosphorus, potassium fertilizer, timely, adequate irrigation; late to phosphorus, potash fertilizer, appropriate to reduce the number of irrigation. For the prosperous pomegranate tree, spraying 40% ethephon 2000 to 3000 times after harvesting can adjust the growth of the tree.
Pest control. In this period, the main control objects were peach aphid, peach borer, scutellaria moth, thorn moth, Chinese golden moth, golden caterpillar and other pests and dry rot, fruit rot, brown spot and other diseases. Control methods: cut insects, pick insects, concentrate deep or burn, kill larvae on the trunk; spray 40% mancozeb 500 times or 40% thiophanates 800 times or 40% Carbendazim gel suspension 500 times plus 50% crystal trichlorfon 1000 times liquid pest control pest control. In the later period, the use of toxic pesticides should be minimized.
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