High mountain tea refers to tea produced in regions located at elevations of 600 meters or higher. These areas are known for their unique environmental conditions, such as lower temperatures, higher humidity, and diffused sunlight, which contribute to the tea’s superior quality. One of the most popular high mountain teas is Takayama tea, which is highly valued for its purity, low pesticide residue, and rich flavor. It has become a top choice among health-conscious consumers who prioritize safe and natural products.
Tea originated from the Yunnan-Guizhou Plateau in China, where it developed characteristics like a stimulating taste, moist texture, and diffused light exposure. High-altitude regions share similar ecological features, making them ideal for tea cultivation. The soil in these areas tends to be deep, fertile, and rich in organic matter. The large temperature difference between day and night helps tea plants accumulate nutrients, leading to better-quality leaves. However, high mountains also present challenges, such as limited sunlight, poor heat conditions, and frequent rainfall, which can cause erosion and frost damage. These factors make high mountain tea production more difficult but also contribute to its distinctive character.
To establish a high-standard tea garden, several key technical points must be followed. First, land selection is crucial. New tea gardens should be established on well-structured red or yellow soil with a pH between 4.5 and 6.5, a slope less than 25 degrees, and sufficient water supply. Pollution-free tea requires testing air, soil, and water quality before planting. Second, planning should focus on water and soil conservation, ensuring ecological balance. Tea gardens should be designed with proper drainage and irrigation systems, and shade trees like persimmon or pear should be planted strategically. Third, topsoil should be returned to planting trenches, mixed with base fertilizer, and prepared carefully to ensure healthy growth. Fourth, applying sufficient organic and phosphate fertilizers is essential for long-term productivity.
When planting tea trees, selecting healthy seedlings and transplanting them during dormancy is critical. Seedlings should be handled carefully to avoid root damage, and any excessively tall ones should be pruned before planting. Proper care, such as watering and protection against frost, ensures successful establishment.
During autumn and winter, tea gardens require special attention. Covering young or weak tea plants with green manure improves cold resistance and adds organic matter. Spraying lime sulfur reduces pests, while reducing flower production through ethylene application helps manage plant energy. Monitoring weather conditions and taking preventive measures against frost is also important.
Fertilization strategies vary depending on the age of the tea plantation. Young plants benefit from organic base fertilizers and timely topdressing with nitrogen-rich materials. For mature plantations, calculating the right amount of NPK based on yield is essential. Fertilization methods include shallow trench application and foliar sprays, especially during the growing season.
Pruning plays a vital role in shaping and maintaining tea trees. Young trees undergo multiple cuts to develop a strong canopy, while older trees may need renewal pruning to improve yield and quality. Proper pruning techniques help maintain tree health and promote even growth.
Timely harvesting is essential for quality. Picking should be done in batches when the required percentage of buds and shoots reach maturity. Following specific picking rules, such as leaving certain leaves behind, helps maintain plant vigor. The tea season usually ends before November, especially after the frost period.
Pollution-free tea includes low-residue, green, and organic varieties. These teas meet strict safety standards, ensuring they are free from harmful substances. Green tea is certified by the Chinese government, while organic tea follows international standards. Low-residue tea meets EU pesticide regulations, making it suitable for export markets.
Producing pollution-free tea involves careful land selection, quarantine of imported seedlings, and adherence to strict agricultural practices. Soil, water, and air tests are conducted to ensure compliance. Integrated pest management combines agricultural, biological, and chemical controls to minimize environmental impact. Processing and packaging must also follow strict hygiene standards to prevent contamination.
Overall, producing high-quality, safe tea requires a combination of good land selection, proper cultivation techniques, and responsible farming practices. By focusing on sustainability and quality, tea producers can meet the growing demand for clean, healthy beverages.
Due to the irregular characteristics of the pelvic structure, the choice of internal fixation is diverse.
For patients separated symphysis pubis, a 2 or 4 holes, 4.5 or 3.5mm diameter dynamic compression plate or reconstruction plate can be used and fixed with full-thread cancellous bone screws.Another method of fixation is lag screw fixation. In patients with new sacroiliac joint dislocation with a forward approach,firm fixation can be achieved by using 2holes 3.5mm dynamic compression plates through the front of the sacroiliac joint. The posterior approach can also be used to insert 6.5mm lag screws into the sacral wings or hollow cancellous bone screws with interosseous compression for firm internal fixation. If available, the fracture may be fixed with 3.5mm or 4.5mm pelvic reconstruction plates and appropriate full-thread cancellous bone screws.
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