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Guidelines for Fishery Reconstruction Measures After Rain, Snow and Freezing Disasters in Southern China
Since early January 2008, rain, snow and freezing weather has severely affected fishery production in multiple provinces and municipalities in southern China. According to incomplete statistics, losses from fish and shrimp killed by freezing in southern provinces and regions exceeded 10 billion yuan. In response, the following measures and suggestions for freshwater fishery reconstruction after rain, snow and freezing disasters in southern regions are proposed for reference. In terms of aquaculture species and regions, the current damage is mainly divided into the following types: 1. Tilapia aquaculture: The tilapia aquaculture industry suffered the most severe losses during this winter's cold wave.
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What are the precautions for fish harvesting during freezing periods?
The Spring Festival is approaching, which is an important period for harvesting aquatic products. Brood fish and fish about to be sold are raised together, so attention must be paid to protecting the brood fish from freezing. Do not carry out operations when freezing occurs. Add water to ensure a water depth of 1.5 m to 2 m to stabilize the temperature. Try to avoid exposing the brood fish to the air. Harvested brood fish should be bathed in 2% salt water for 15 minutes to 20 minutes to prevent and treat saprolegniasis. In places where eels are raised in net cages, the net cages should be promptly sunk to the bottom to contact the silt, and straw should be added on top of the cages for coverage, with operations reduced as much as possible to ensure safe overwintering.
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Pollution-free management key points for raising yellow catfish (Pelteobagrus fulvidraco) as a supplementary species in lotus ponds
Lotus ponds contain many benthic organisms, aquatic insects, plankton, and pond weeds, which can provide food for the fish, while the fish feces and leftover bait can provide fertilizer for the lotus, and the fish activity loosens the soil, providing good soil conditions for lotus growth. Because lotus leaves shade and block light, the light intensity in the lotus pond environment is relatively weak, which suits the yellow catfish's requirement for feeding and growth under low light. Pond construction. Choose a pond with abundant water sources, good water quality, fertile soil, flat terrain, convenient water intake and drainage, and strong water and fertilizer retention,
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Detailed Explanation of Key Points for Pollution-Free Shiitake Mushroom Cultivation Techniques
Fungal mushrooms include straw mushrooms, shaggy mane mushrooms, shiitake mushrooms, oyster mushrooms, etc. Shiitake mushrooms are deeply loved by consumers for their delicious flavor, and due to their relatively high selling price, along with cultivation and management techniques that are easy to learn and understand, they are very suitable for farmers to cultivate during the leisure autumn and winter seasons. 1. Mushroom Bag Preparation 1. Raw Material Preparation: Mulberry branches, apple branches, or other broadleaf trees such as poplar, willow, paulownia, and locust can all be used as cultivation substrate, as long as they are not moldy, they can be used after crushing. 2. Selection of Cultivation Period: The optimal season is from late August to mid-September. The ten-day highest temperature
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Pollution-free control methods for pests and diseases in flowers, trees and bonsai
Alcohol swabbing method: gently swab the leaves of orchids infested with scale insects using disinfecting alcohol; this can kill the scale insects, and in the following year there will rarely be any scale insect damage. Vinegar swabbing method: soak a cotton ball in edible vinegar (rice vinegar), then gently swab the leaves of camellias; this not only kills scale insects but also restores the damaged leaves to a green, glossy condition. Iodine swabbing method: when dry rot is found on the trunk of a stump bonsai, immediately use a blade wiped with iodine to scrape away all the rotted parts, reaching down to the xylem, then apply iodine to the main trunk; one week
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Analysis of Key Points of Pollution-Free Cultivation Techniques for Bonsai
A. Steiner, chairman of the International Pollution-Free Cultivation Association, clearly defined pollution-free cultivation as nutrient solution cultivation. Plants center on the physiological functions of inorganic nutrient elements. Pollution-free cultivation refers to the use of inorganic nutrient solutions to directly provide plants with the nutrient elements essential for growth, replacing the cultivation method in which soil and organic matter normally provide nutrients to plants. In pollution-free cultivation, the nutrient solution can be sprayed directly onto the root system (aeroponics), or plants can be grown directly in a flowing inorganic nutrient solution (hydroponics), or sterilized microporous inorganic minerals
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Detailed Processing Technology of Sulfur-Free Low-Sugar Dried Apricots
Yanggao Jing apricot is one of the four famous apricot varieties in Shanxi Province, with a single fruit weight of 34.8g, containing vitamin C 10.4mg/100g, refractive sugar 13.1%, reducing sugar 4.7%, and acid 2.4%. This variety is the best variety for processing dried apricots; its apricot fragrance is strong, its pit yield is low, and its acid content is high, the highest among all varieties. Yanggao dried apricots are golden-yellow and translucent, with soft flesh and a sweet-sour taste, making them a premium product among preserved fruits. The products were once exported to Southeast Asia, Japan and other countries, and were praised in Japanese supermarkets as "Chinese
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Key Technical Points for Disease Prevention and Control in Pollution-Free Fish Farming
Symbiosis of plants and animals: When aquatic plants and fish live together in the same pond, the fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus roots, arranged in an east-west direction, with wide row spacing (greater than 33 cm), occupying no more than 50% of the total water area so that the lighting effect is good. The water depth depends on the water tolerance of the aquatic plants; for rice it is generally within 30 cm, and for lotus roots it can generally reach more than 50 cm. The farmed fish can be conventional species or famous, special and improved new varieties. The farming method can be seedling breeding or adult fish farming. Because residual bait, fish feces and so on are deposited
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Pollution-free Cultivation Techniques for Pleurotus pulmonarius at High Altitudes in Summer
Pleurotus pulmonarius, also known as yellow-white oyster mushroom, lung-shaped oyster mushroom, pocket mushroom, Ji pinggu, small pinggu, etc., taxonomically belongs to the phylum Fungi, subphylum Basidiomycotina, class Hymenomycetes, order Agaricales, family Pleurotaceae, genus Pleurotus, and is named for its elegant appearance and delicious taste. Pleurotus pulmonarius is rich in protein, sugars, vitamins, and trace elements such as iron and calcium; in particular, its protein content is higher than that of button mushrooms, shiitake mushrooms, straw mushrooms, and other edible fungi, hence it is also called the "finest of mushrooms." Pleurotus pulmonarius can be stir-fried, cooked in soup, or used for hot pot, and is deeply favored by consumers; its market sales and
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Key Technical Points for Mimicking Wild, Pollution-Free Cultivation of Maitake (Grifola frondosa)
Crop straw and forestry by-products accumulate in enormous annual quantities, providing abundant raw materials for the production of edible fungi. How to produce pollution-free, safe, high-quality, pollution-free edible fungus products is an important issue facing the edible fungus industry. The following introduces pollution-free cultivation techniques for mimicking wild maitake (Grifola frondosa), based on the national pollution-free edible fungus production technical standards. Optimal selection of cultivation sites and raw materials: edible fungi have a strong ability to accumulate harmful heavy metals, so cultivation sites and raw materials for maitake must be carefully selected to minimize the accumulation of harmful substances brought about by the cultivation site and raw materials. ①
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