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Key points of fresh tea preservation and storage technology: tea leaves are less likely to deteriorate even after long storage
● Vacuum extraction and nitrogen filling preservation. Vacuum extraction and nitrogen filling preservation uses nitrogen to replace the air inside the packaging bag, preventing tea oxidation and thereby achieving the goal of preventing tea aging and deterioration. When green tea is packaged with nitrogen in aluminum foil bags, after 6 months of storage, the vitamin C content can remain above 96%. During the nitrogen filling process, special attention must be paid to the firmness of the packaging bag seal, and insufficient nitrogen filling or gas leakage must be prevented. Before nitrogen filling packaging, first extract the air from the bag to create a vacuum state, then fill it with nitrogen and
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Key points of seedling protection techniques for newly planted early-sprouting tea: improving the survival rate of tea seedlings
In recent years, Chun'an County has accelerated the pace of developing clonal early-sprouting tea. By early 2007, Chun'an County had planted 53,000 mu of clonal early-sprouting tea (1 mu = 667 sq m, the same below), of which 38,000 mu were in production, and another 15,000 mu still needed strengthened drought resistance and seedling protection, with management aimed at improving the survival rate. Especially for tea gardens planted last winter and this spring, the following seedling protection measures must be effectively adopted. 1. Mulch with grass at the right time. Mulching with grass can preserve water and lower temperature, and loosen the soil; it is a key drought-resistance technique. Cutting grass
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Detailed Explanation of Bag Cultivation Technology for Shaggy Mane (Coprinus comatus) Using Fermented Substrate
I. Cultivation Timing and Spawn Selection (1) According to the actual conditions of each mushroom grower, substrate production is carried out in winter, spring, and autumn respectively. Since shaggy mane has the characteristic of not fruiting without casing soil, spawn bags can be mass-produced during the slack farming season, and casing soil applied 20-30 days in advance according to market demand for fruiting. (2) Select varieties with plump fruiting bodies, moderate individual size, few scales, disease resistance, and high yield. For fresh sales, choose solitary-growing varieties; for salting, choose cluster-growing varieties. II. Substrate Formulas Formula 1: cottonseed hulls 58%, corncob 30%, nitrophosphate-potassium 2%
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What role do carbohydrates play for pigs? What pig farmers need to know
Carbohydrates are composed of three elements: carbon, hydrogen and oxygen. They are the main component of plants, accounting for about 70%-80% of all nutrients in plants, and are the main energy source in pig feed. After carbohydrates enter the pig's body, they are transformed into energy through a series of changes, providing heat energy for the pig's various life activities. The carbohydrates remaining after meeting daily energy consumption can be converted into fat in the pig's body and stored as an energy reserve, to be used when hungry. The pig's fat and leaf fat are this reserve of surplus energy. Pigs have a strong ability to convert carbohydrates eaten into fat, and when a large amount of carbohydrates is eaten, body fat increases quickly as well, so feeding pigs with feed rich in carbohydrates (such as corn, rice, sweet potato, potato) makes it easy to convert into body fat. When raising lean-meat pigs, carbohydrates should be supplied reasonably, especially in the late fattening stage, when the feeding amount of such feed should be appropriately reduced to prevent the pig from becoming too fat.
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How to treat swine winter diarrhea? A detailed explanation of integrated Chinese and Western medicine therapy
Porcine epidemic diarrhea in winter, commonly known as winter diarrhea, has its peak incidence from mid-December each year to mid-January of the following year; it strikes suddenly, spreads over a wide area and spreads rapidly; the incidence rate is high, seriously affecting the growth and development of pigs. 1. Symptoms The incubation period of the disease is generally 12-18 h. After infection, adult pigs show symptoms of watery diarrhea; the feces are initially grayish-white, gradually becoming yellowish-green, with an offensive fishy odor. Abdominal distension, vomiting, body temperature rises to 40-41°C in the initial stage, and once the diarrhea passes, the body temperature drops. Thirst and a desire to drink. 10 days
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Key Points of High-Yield Technology for Integrated Fish-Lotus Culture in Ponds
0. Introduction The grid-pond fish-lotus integrated culture technology involves partitioning hardened lotus ponds with roof tiles, hard boards, etc. into small grids of 2-4 sq m each, and planting lotus within the grids. On average, each mu of water surface produces 0.5 wan kg of lotus and 400-450 kg of fish, with a net benefit of over 10,000 yuan per mu. This technology can utilize abandoned pits, wasteland, riverbank land, and scattered marginal land to build grid-pond fish-lotus integrated culture systems. It features small investment, low cost, quick results, and high efficiency, making it suitable for widespread development by rural households. It can both increase economic income and improve market
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Two Processing Methods for Dehydrated Garlic Slices and Sweet-and-Sour Pickled Garlic
1. Dehydrated garlic slices: Select fresh garlic bulbs that are well matured, free of injuries, pests and diseases, white in color and large in size. After removing the stems, separating the cloves and peeling, slice them while wet, then rinse in an aqueous citric acid solution to reduce the activity of garlic enzymes. Note that rinsing must be completed within 24 hours after slicing, so as to prevent the garlic slices from producing colored pigments due to oxidation, which would affect the color of the finished product. Place the rinsed garlic slices in a temperature-controlled dehydrator and dry them in three stages: keep the temperature at around 60°C in the early stage, increase it moderately in the middle stage, and keep it above 70°C in the late stage, but it must not exceed 78°C, so as to prevent the garlic slices from scorching, which would affect flavor and color. When the moisture content of the garlic slices drops to about 5%, the finished product is obtained.
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How to prevent and control bee diseases in spring? A detailed explanation of integrated control measures
The occurrence of bee diseases is directly related to beekeeping and management techniques. Once a disease breaks out, it will inevitably affect colony growth and economic returns. Especially in northern China, where the temperature difference between early and late spring is large and nectar and pollen sources are scarce, bee colonies are most prone to bee diseases. Therefore, in spring, the measure of "prevention first, treatment as a supplement" should be used to control the occurrence of bee diseases. Selection and treatment of apiary sites The basic conditions for beekeepers when choosing a site should be shelter from the wind, facing the sun, and dry terrain. In spring, choose low mountain areas or cutover land with many willow species and mainly Aceraceae plants. Only
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Detailed Explanation of High-Yield Cultivation Techniques for Ganoderma lucidum Using Short Logs with Sterilized Substrate
Short-log sterilized-substrate cultivation is a relatively fast-developing new technique for cultivating Ganoderma lucidum (reishi) in recent years. On average, more than 20 kg of dried mushrooms can be harvested per cubic meter of wood, with high yields reaching more than 30 kg, a 20% increase over conventional cultivation methods. The reishi produced is firm and thick in texture, glossy, and higher in acid content than bag-cultivated reishi, with more than 90% of the product meeting export requirements. 1. Cultivation season: Ganoderma lucidum belongs to the medium-to-high temperature type of fungi, and its yield is related to the tree species of the logs, cultivation time, and cultivation techniques. Inoculation time can be arranged from late October to December
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Occurrence and Damage Characteristics of Tea Tussock Moth and Integrated Control Methods
In recent years, with the development of pollution-free tea and organic tea production, the frequency and amount of chemical pesticides used in tea gardens have decreased, and some tea gardens even do not use chemical pesticides, resulting in aggravated damage by the tea tussock moth in a short period. In the county where the author works, tea tussock moth damage has occurred for several consecutive years, and after being damaged, the tea plants were left with only bare branches, greatly affecting the economic income of tea farmers. 1. Damage symptoms: The tea tussock moth larvae bite and feed on leaves, causing leaf notches and bare branches. 1st-2nd instar larvae gather on the underside of leaves to feed on the mesophyll, leaving only the epidermis and veins, and the damaged leaves appear transparent
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