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Detailed Prevention and Control Methods for Low Fruit Set Rate in Jujube Trees
1. Pay attention to shaping and pruning. Because the bud types and growth and fruiting habits of jujube trees differ from those of other fruit trees, they are not sensitive to pruning responses. Therefore, pruning must follow the tree's natural tendency and shape the tree according to the branches, and pruning should be light. Winter pruning and summer pruning should be combined so that the main branches are reasonably distributed with clear layers. Select
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Pollution-free control techniques for diseases, pests, and weeds in jujube trees
Fully implement the plant protection policy of giving priority to prevention and comprehensive control, base efforts on improving the orchard ecological environment and strengthening cultivation management, give priority to agricultural and ecological regulation measures, pay attention to protecting and utilizing natural enemies, and give full play to the natural control role of natural enemies. Select high-efficiency
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How to protect citrus leaves in winter? These six measures you need to master
After citrus enters dormancy in winter, 40-60% of the tree's nutrients are stored in the leaves. Therefore, protecting leaves in winter not only helps enhance the tree's cold resistance and promote flower bud differentiation, but also benefits bud break, flowering and fruiting the following spring. Leaf protection measures mainly include the following
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Causes and Control Methods of Citrus Sunburn
Citrus sunburn is a common physiological disease in hot seasons, mainly affecting leaves, fruit and bark. The occurrence of this disease is mainly caused by exposure to high temperatures and scorching sun. At noon and in the afternoon during hot weather, the local temperature of orange trees exposed to direct sunlight rises sharply
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How to control common pests and diseases of citrus?
For the citrus flower bud maggot, control can begin when the flower buds show white (about the size of a mung bean). The method is to spray the ground with 120-150 g of 90% trichlorfon crystals per mu mixed with 20 kg of water; or use 150 g of 1605 capsule formulation or 2.5-3 kg of 3% carbofuran per mu, add 25 kg of fine soil, mix well and spread on the tree
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Key points of pollution-free control techniques for citrus cultivation
When chemical pesticides are used to control citrus pests and diseases, costs are high and resistance is easily developed. Guiding fruit growers to use the following simple and economical methods gives good results in controlling certain citrus pests and diseases. The specific control methods are as follows. 1. Plant ash to control citrus leafminer: during the shoot-flushing period, start when the new shoot has grown to about 3 cm, and continue until the new shoot matures, sprinkling once every 5-7 days for 5-6 consecutive times, and during the interval, replenish promptly after rain. In the early morning when the dew has not dried, or after rain, or after watering, promptly sprinkle plant ash onto the upper and lower surfaces of the leaves of the new citrus shoots. Throughout the shoot period, the leaves should remain constantly coated with the ash powder until the shoot leaves mature. This method is suitable for greenhouse or open-air citrus nurseries, young citrus orchards, and potted ornamental citrus for controlling citrus leafminer.
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How to prevent and control root-knot nematode disease when growing citrus?
Citrus root-knot nematode disease damages the citrus root system, causing root galls of various sizes to form on the roots, and fibrous roots to clump together into a cake-like mass, which hinders the root system's ability to absorb nutrients and reduces the number of absorbing roots. When citrus is first infected and damaged by root-knot nematodes, the decline is not very obvious in the canopy
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Control methods for yellowing disease in citrus cultivation
In many places in our province, citrus yellowing disease occurs commonly in citrus orchards, causing weakened tree vigor, reduced yield, degraded quality, and premature tree decline. Some fruit growers believe it is all citrus greening disease and adopt the practice of cutting down trees, causing unnecessary production losses. In fact, yellowing disease, as long as it is not
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Detailed Explanation of Key Points for Frost Protection Techniques in Citrus Cultivation
For fruit trees that have suffered relatively severe frost damage, adopt tree-preservation measures: First, mound soil to increase temperature. Mounding soil protects the root crown; the standard for mounding is that the root system is not exposed and the root crown is covered. Second, whitewash and wrap the branches and trunk. The trunk and main branches form the tree framework and are prone to frost damage, which leads to weakened tree vigor
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Detailed Explanation of Key Cultivation Techniques for Newly Established Citrus Orchards
1. Orchard establishment should be of high quality and started early. The key points are digging the trenches well and applying sufficient basal fertilizer, passing the first hurdle of orchard establishment well. Dig continuous trenches 1 m wide and 0.6 m deep along the contour lines, fill each mu with 2500--30000 kg of green manure, and apply an appropriate amount of nitrogen and phosphorus fertilizer; next: for low-lying land and paddy fields, drainage ditches should be dug well, with the main drainage ditch more than 0.80 m deep, to reduce field humidity and lessen pest and disease damage. Orchard establishment should begin promptly after the autumn harvest to ensure enough time for the green manure and soil to decompose fully; field-grown seedlings are best planted before late October (mid-March in spring), while container seedlings should be planted earlier, before October (after March in spring); planting time should be early rather than late.
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