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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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Rapid Freezing and Cold Storage Preservation Techniques for Edible Mushrooms
Shiitake mushroom production has flourished across both northern and southern regions of our country in recent years. Since the popularization of bag-cultivated shiitake in Fujian, the provinces of Zhejiang, Henan, Hubei and others have successively developed bag-cultivated shiitake with successful results. Quick-freezing storage of shiitake has become an indispensable and important preservation technique in the production and sales chain. Quick-freezing storage of shiitake is simpler and more convenient than that of button mushrooms. Generally, fresh mushrooms are pre-cooled in ice water, removed and drained, then rapidly placed in an ultra-low temperature freezer at -50 to -60°C for quick freezing, and then placed in a cold storage at -18 to -24°C for storage, entering consumers' homes through the "cold chain" system.
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Key Technical Points for Quick-Freezing and Cold Storage Preservation of Edible Fungi
Quick-frozen storage of shiitake mushrooms: In recent years, shiitake mushroom production has flourished across both northern and southern parts of China. Since the popularization of bag-cultivated shiitake mushrooms in Fujian, provinces such as Zhejiang, Henan, and Hubei have successively developed bag-cultivated shiitake mushrooms with success. Quick-frozen storage of shiitake mushrooms has become an indispensable and important preservation technique in the production and sales chain. Quick-frozen storage of shiitake mushrooms is simpler and more convenient than that of button mushrooms. Generally, fresh mushrooms are pre-cooled in ice water, removed and drained, then quickly placed in an ultra-low-temperature ice storage at -50 to -60°C for quick-freezing, and then placed in a cold storage at -18 to -24°C for preservation, through
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Quick-freezing method for peaches and detailed operating steps
Fruit selection: Peaches intended for quick-freezing processing should have fine flesh, few coarse fibers, good flavor, uniform size, neat fruit shape, no pests or diseases, no mechanical injury, easy pit removal (preferably freestone varieties), and resistance to browning. Harvest at slightly lower maturity; after arriving at the plant, a processing volume for 4 to 8 days can be stored. If stored in a cold storage, the processing period can be longer, but chilling injury to the peaches must be prevented. Generally, for white-fleshed peaches, Okubo is preferred, and for yellow-fleshed peaches, Albat is preferred. Cut in half and remove pit: Cut along the suture line into two halves and remove the pit, place the fruit cups
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Five practical methods to protect wheat seedlings from freezing and cold
When the severe winter comes, doing a good job of protecting overwintering crops such as wheat from the winter cold and taking preventive measures is an important guarantee for obtaining a bumper harvest. According to different field plots, the following five methods can be used to prevent freezing and protect seedlings. First, spreading grass to protect seedlings. Some varieties with strong spring habit are sown relatively late, emerge sparsely, and have fewer tillers. For such field plots, cover them with crop straw such as wheat straw and rice straw to keep them warm, promote tiller growth, prevent freezing and strengthen seedlings, so that the wheat seedlings can safely overwinter. Second, applying fertilizer and water to the roots. For field plots where wheat seedlings have shallow roots and few tillers
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Detailed Explanation of Key Points of Peach Quick-Freezing Processing Technology
(1) Process flow: raw material selection → pitting and color protection → blanching and cooling → peeling → packaging and adding sugar syrup → pre-cooling → quick freezing → frozen storage. (2) Key operating points. Raw material selection: after peaches are picked, ripe ones must be processed immediately; hard, unripe fruit must be ripened. Properly ripened peaches have bright color, rich flavor, and are easy to pit and peel. Pitting and color protection: after the raw material ripens, remove the pit with a small knife or a pitting machine, and immediately place the flesh in cold water to avoid contact with air and prevent discoloration. The pitting machine has fruit
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What are the effective methods for protecting pepper seedlings from freezing in winter?
During winter pepper seedling raising, sudden cold waves often strike, the temperature drops abruptly, and the seedlings are prone to freezing damage. If the temperature drops slowly, they are less likely to freeze. If the temperature is not very low but lasts for a long time, especially when low temperature is accompanied by rain, a condition known as "wet cold", the seedlings are also very prone to freezing damage. The severity of freezing damage to the seedlings is also related to how quickly the temperature rises after the low temperature. If the temperature rises slowly, the seedlings thaw slowly and easily regain their vitality. If the warming and thawing are too
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Is the autumn crocus afraid of freezing? Moving it indoors in winter with temperature control is the safest way to care for it
The autumn crocus, an extremely easy-to-grow plant with excellent ornamental value, is kept in the homes of many flower lovers. But during the growing process, because the autumn crocus is so simple to care for, many flower lovers let their guard down, and the result is that they end up killing the autumn crocus in winter! Many people say the autumn crocus got frozen, so is the autumn crocus afraid of freezing?
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How to grow cineraria? Growing methods and precautions for a plant that fears both high heat and freezing
Cineraria (Pericallis hybrida) is a very beautiful flowering plant with lovely and richly varied flower colors, deeply loved by gardening enthusiasts. In daily life, because cineraria has strong benefits, many people want to grow it, so how do you grow cineraria? Below are the growing methods and precautions for cineraria carefully compiled by the editor, very detailed.
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Four Simple Ways to Protect Pepper Seedlings from Freezing in Winter Greenhouses
Four Simple Ways to Protect Pepper Seedlings from Freezing in Winter Greenhouses
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