Freezing

Nursery management significantly influences the survival and transplanting rates of tea seedlings. Different ecological and physiological factors at various stages of development require distinct management approaches, depending on when the cuttings were taken. I. Development Cycle of Tea Seedlings When using short-shoot cuttings, the process from planting to developing a standard-compliant tea seedling can be divided into two phases: the pre-plant stage where the cutting is establishing itself, and the phase where a complete plant develops into a viable seedling. The survival rate during the first phase is critical in propagation techniques. Summer and early autumn cuttings have longer growth cycles and larger growth volumes, which often result in a significant number of weaker plants due to competition for nutrients and space, particularly in the second year of growth. To improve transplanting rates and seedling quality, the second phase is typically managed in two different periods: one when the seedling is less than 20 cm tall, focusing on promoting vigorous growth, and another once it surpasses 20 cm, implementing measures to control stronger plants while stimulating weaker ones. II. Element Management Nursery element management encompasses water, light, temperature, fertilization, pest and weed control, and plant regulation. Each of these elements…

Slight Cold, the twenty-third solar term of the year. From today onwards, we enter the coldest period of the year. Slight Cold marks the lowest temperatures, with only a few historical instances where Great Cold was colder than Slight Cold. Now that it's cold, brewing tea is probably what tea lovers look forward to every autumn and winter. In the freezing cold, gathering around a stove to brew tea with a few friends, whether discussing poetry and philosophy or not, the sound of boiling water and swirling tea leaves brings out the words that float from the teapot mouth. These are the words brewed by the tea maker all winter long. A gentle fire burns away to bring forth the next spring. Drinking tea, regardless of social status or wealth, is always part of people's leisure lives. Drinking Tea Selecting the right tea to drink should be based on the season and environment. Warming and heat-repelling fermented teas are typically black tea, dark tea, ripe Pu'er, Liubao tea, and aged white tea. Warming and Heat-Repelling Fermented Teas As a fully fermented tea, black tea undergoes enzymatic oxidation due to the action of oxidase on tea polyphenols, converting much of it…

Liubao tea, Anhua dark tea, raw Pu'er tea, ripe Pu'er tea, and Fuding white tea can be stored for a long time. These teas are post-fermented or aged over time. They contain abundant pectin, sugars, amino acids, etc., and require time for enzymatic reactions. As they age, their aroma becomes richer, making them suitable for long-term storage. Which Teas Are Suitable for Long-Term Storage? 1. White Tea White tea is often referred to as "a one-year tea, three-year medicine, seven-year treasure." Storing white tea helps transform its fresh, sweet flavor, increasing its sweetness and developing aromas like jujube and medicinal herbs, with a clear, sweet taste. White tea aged for more than three years has a gentler nature, making it very suitable for people with weaker spleen and stomachs to drink. 2. Pu'er Tea Both raw and ripe Pu'er tea can be stored for a long time, but raw tea has greater storage value. Stored in different environments, Pu'er tea undergoes changes in different directions, which is extremely intriguing. The longer the storage time, the richer the layers of taste and the stronger the flavor. 3. Dark Tea Storing dark tea benefits the further transformation by beneficial bacteria, making the…

Green tea, yellow tea, and oolong tea should be stored in the refrigerator’s chill compartment, with an ideal temperature range of 0 to 5°C. They should not be frozen, as this can cause moisture to freeze and condense on the surface of the tea packaging, increasing the risk of dampness. On the other hand, dark tea (pu'er) and white tea have aging value and are best stored at room temperature in a dry place; they do not require refrigeration. Storing Tea: Refrigeration or Freezing 1. Store tea in the refrigerator’s chill compartment. A storage temperature around 10 degrees Celsius is preferable, but if it can be maintained between 0 and 5 degrees Celsius, the storage effect will be even better. 2. Tea has a strong tendency to absorb moisture and odors. When storing tea in the refrigerator, make sure the tea is well-sealed and that there are no strong odors in the fridge. Seal the tea tightly before placing it in the refrigerator. Additionally, do not store the tea alongside items with strong odors to avoid contamination. 3. After removing chilled tea from the refrigerator for use, reseal it promptly to prevent it from absorbing moisture from the air, which…

The tea regions of Guiyang City have been frequently impacted by extreme spring weather in recent years. According to meteorological forecasts, the city is expected to experience another cold wave soon. To cope with the upcoming temperature drops, thunderstorms, and late spring cold snaps, this document, "Preventive and Remedial Measures for Low-Temperature Freeze Damage (Late Spring Cold Snap) in Guiyang and Guian Tea Gardens," has been specially formulated for your reference. I. Preventive Measures (1) Pay Attention to Cold Wave Forecasts Strengthen forecasting and early warning systems for disastrous weather conditions, promptly issue cold wave information, and prepare in advance. After a cold wave forecast is released, tea gardens that are already open should mobilize manpower to harvest as much as possible to minimize losses from frost damage. (2) Cover Tea Gardens for Frost Protection Straw, bamboo leaves, and rice husks can be spread between rows of tea plants to keep them warm, ideally at a thickness of about 10 centimeters, which can generally increase temperatures by 1-2°C. In tea gardens on windward slopes prone to frost damage, cover the canopy with straw, weeds, or shade nets, not too tightly so that the tea plants are still visible. This will…

Although tea trees have a certain ability to withstand adverse weather conditions during their growth and development, they can be harmed if the conditions exceed a certain limit. This can range from reduced yield and quality of the leaves to the death of the tree. So what are the effects of low temperatures on tea trees? I. Common types of frost damage in tea trees The common types of frost damage in tea trees include snow frost, frost, and dry cold wind frost. In tea-producing areas south of the Yangtze River, snow frost and frost are predominant, while all three types of frost occur in areas north of the river. After being affected by frost, tea trees typically exhibit red withering or green withering. In areas south of the Yangtze River, red withering is more common, while both forms occur in areas to the north. II. The sequence of frost damage development in tea trees Tea trees have a certain ability to resist low temperatures, but different organs have varying degrees of cold tolerance. Among leaves, stems, and roots, cold tolerance decreases in that order. However, under field cultivation conditions, leaves protect the stems, and the stems and leaves together…

In the height of summer, we've entered the dog days. The weather is both sultry and humid. When we take out some tea stored at home to tidy up, we often find that much of it has molded and can no longer be consumed – a great pity. Nowadays, more and more people enjoy tea, but many don't know the best methods for storing it. Some even keep their tea in basements, garages, or even in the refrigerator with food – all very incorrect practices. Tea leaves have strong hygroscopic and odor-absorbing properties, making them easily susceptible to absorbing moisture and odors from the air. This is especially true in the hot, humid weather of summer when they are more prone to microbial growth. How should you store tea at home? Most teas purchased by households come in cans or as loose tea. Since you won’t use it all at once, you’ll face the issue of storage. Here are some common household tea storage methods. Let’s learn them together. Sealed Bag and Foil Bag Storage Method Select bags with sealable closures designed for food, or professional sealable bags. Choose those made from thicker, higher-density materials and avoid using scented or…