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Detailed Explanation of the Key Points of Artificial Cultivation Techniques for Cordyceps sinensis
Is there artificial cultivation of Cordyceps sinensis now? Is artificial cultivation of Cordyceps sinensis very difficult? Wild Cordyceps sinensis is truly very rare, and people are now researching how to carry out artificial cultivation of Cordyceps sinensis. In recent years, research on artificial cultivation of Cordyceps sinensis at home and abroad
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Scientific Cultivation Experience and Planting Methods for Cordyceps sinensis
Dongzao Xiacao is also called cordyceps, Dongchongcao, and Xiacao Dongchong. It is the stroma of the fungus Cordyceps sinensis (Clavicipitaceae, Cordyceps genus) and the dried insect body of its host. Sweet, warm. It nourishes the lungs and tonifies the kidneys, and is mainly used for pulmonary tuberculosis, hemoptysis, deficiency asthma, night sweats, spermatorrhea, impotence, and soreness and pain of the waist and knees. It mostly grows
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What are the control methods for citrus canker?
Citrus canker Xanthomonas citri (Hasse) Dowson is a bacterial disease that seriously damages citrus, and has been listed as a plant quarantine object at home and abroad. After plants are infected, the tree vigor weakens, and leaves and fruits drop easily; thus reducing yield and affecting fruit quality. Seedlings
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Citrus cultivation requires timely promotion of flower bud differentiation
Since the beginning of winter, temperatures have remained on the warm side, citrus orchard soil moisture content is relatively high, and some citrus trees have begun to sprout winter shoots, which is very unfavorable for citrus flower bud differentiation this winter. If not handled properly, it will cause serious effects on citrus production next year. Citrus growers should
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Key Technical Points for Flower and Fruit Retention in Citrus Cultivation
The 2-3 months from bud emergence to fruit set stabilization is the most important period of the year for citrus trees. For a good harvest, comprehensive flower and fruit retention measures must be taken according to the growth conditions of the citrus trees and changes in weather. 1. Reasonable fertilization: For citrus orchards that were not fertilized last winter, organic fertilizer should be supplemented as soon as possible. For adult trees, apply 5-10 kg of chicken manure or 1-2 loads of farmyard manure per tree, plus an appropriate amount of urea, and bury it around the root zone. The fertilization principle during the flower and fruit retention period is: nitrogen-based in the early stage, emphasis on potassium with phosphorus supplementation in the later stage; combining soil fertilization with foliar feeding. For the post-bloom fertilizer, apply compound fertilizer plus an appropriate amount of urea during the flower-falling period to promptly replenish nutrients consumed during flowering; for the fruit-setting fertilizer, apply potassium fertilizer plus an appropriate amount of phosphorus fertilizer; for the fruit-swelling fertilizer, apply compound fertilizer plus potassium fertilizer. For foliar feeding, spray 0.2% monopotassium phosphate twice from spring bud break to before flowering, spray nucleotides during rainy days, and add 0.1% borax to one of the applications; during the young fruit stage, spray foliar fertilizer 2-3 times in combination with pest and disease control or fruit retention, with the first foliar spray including 0.1% magnesium sulfate and 0.1% zinc sulfate.</p><p>2. Soil management: Repair drainage ditches inside and outside the orchard to remove standing water, so that waterlogging on rainy days does not affect root growth or even cause root rot leading to flower and fruit drop. During continuous dry and hot weather lasting more than 10 days, irrigate promptly to keep the soil moist and loose, which helps the root system absorb water and nutrients.</p><p>3. Scientific use of growth regulators: Plant growth regulators commonly used for citrus fruit retention include 2,4-D, fruit-retention hormone, triacontanol, 920, and fruit-retention agents. Use them 2-3 times after flower drop, spraying once every about 15 days. Alternating different growth regulators gives better results. For seedless and few-seeded citrus varieties, using 920 or triacontanol for fruit retention gives better results.</p><p>4. Pest and disease control: During the flowering and fruiting period, the main pests and diseases include red spider mites, rust mites, aphids, citrus blossom midges, tortrix moths, anthracnose, and scab. For aphid control during the spring shoot stage, use omethoate or monocrotophos; in early to mid-April (or early March if drought occurs), control red spider mites, and in mid-to-late April control rust mites, using acaricides or biological pesticides for spraying; spray organophosphorus pesticides at the early bud stage to kill citrus blossom midges and tortrix moths; for diseases, focus on prevention, using fungicides such as copper oxychloride or thiophanate-methyl.</p><p>5. Control early summer shoots: From May to mid-June, promptly remove early summer shoots to avoid competition between shoots and fruit for nutrients, which benefits young fruit development and reduces fruit drop. For vigorous trees with few flowers and few fruits, girdle the trunk 25 days after flower drop to retain fruit, which can also control summer shoots.</p>
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Five key points for winter management of citrus, fruit growers must remember
After the citrus fruit is harvested, because the tree body has consumed a large amount of nutrients in bearing fruit, nutrients need to be supplemented to restore tree vigor. At the same time, winter is also a critical period for citrus flower bud differentiation and for pests and diseases to overwinter. Therefore, strengthening winter management is the basis for a bumper harvest next year and for reducing pest and disease damage.
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How to Manage Citrus After Flooding? A Detailed Guide to Practical Remedial Measures
The heavy rainfall brought by this year's No. 15 typhoon Koppu caused torrential rain in parts of Xinyi City in Maoming, Yangchun City in Yangjiang, and Luoding City in Yunfu in western Guangdong, causing widespread damage and loss to crops such as rice, and severe damage and harm to fruit trees such as citrus.
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What are the control methods for citrus fruit flies?
The citrus fruit fly is a major pest harming citrus fruit. After the fruit is damaged, it softens, turns yellow, rots and drops. When the infestation is severe, it can cause the orchard to have no harvest at all. It can be seen year-round, with July to October as the peak period of damage, and there is no overwintering phenomenon. The female lays eggs in ripe
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Key Points of Post-Grafting Management Techniques for Top-Grafting and Variety Conversion of Citrus
1. Do well in cutting the rootstock stubs. After using side grafting with exposed buds, the rootstock stubs should be cut or sawed off. This should be done in two steps. First, leave about 15cm of rootstock stub above the graft union. After the new shoots have become lignified, cut the stub flush with the graft union and smooth the cut surface with a knife. 2. Do well in removing sprouts. After top-grafting, because the apical dominance has been removed,
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How to prevent and control citrus fruit cracking? Master these cultivation techniques
Every year in June and July, after the second physiological fruit drop, citrus generally does not drop fruit, but then fruit cracking of varying degrees occurs. The peak period of fruit cracking generally occurs in early August and in the two periods from late August to early September. Citrus fruit cracking is one of the important physiological diseases of citrus during the fruit-swelling period.
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