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How to prevent and treat fish lice disease in snakehead? A full analysis of practical methods
(1) Pathogen: fish lice. (2) Symptoms: After being parasitized by fish lice, the diseased fish become extremely restless, swimming wildly and jumping about, with increased mucus on the body surface, and are prone to concurrent saprolegniasis and other diseases. The harm to fingerlings is extremely great, and in severe cases it can cause mass death of the diseased fish. The peak incidence period is from May to September each year. It is a common disease of snakehead. (3) Prevention and treatment: Splash 0.4×0.000001 Yuchongqing over the whole pond.
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Feed shrimp to 80 percent full, and the shrimp stay strong while you save on feed costs
According to shrimp-farming practice, if during the farming process you feed small amounts more often and appropriately stop feeding 1 to 2 meals every 7 to 10 days, not only can the shrimp grow robustly and gain weight normally, but you can also save on shrimp-farming feed costs. The small-amount-more-often shrimp-farming method. Small-amount-more-often means changing the 4 meals originally fed per day into 5 to 6 meals. Although the number of feedings per day increases, the amount fed each time is relatively reduced; feed that originally took 1.5 hours to finish can now be finished within 1 hour. Its benefits are: First, the feed
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What are the key technical measures for ensuring a full stand of cotton seedlings in spring?
Seed preparation. Choose superior seeds; high-quality seeds are the prerequisite for ensuring the emergence rate and for uniform, complete and strong seedlings. Therefore, choose seeds produced and sold by large manufacturers, with standardized packaging, good maturity and plumpness, and a high germination rate. For chemical seed dressing, you can use 50% carbendazim WP at 0.5% of the seed amount, 30% Miaojundi WP, or a mixed dressing of 50% thiophanate-methyl WP at 0.6% of the seed amount and 75% 3911EC at 0.8% of the seed amount, with 2 to 3 kg of water per 100 kg
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Correct Methods and Techniques for Skillfully Harvesting Edible Mushrooms
Edible mushrooms are nutritious vegetables much loved by urban and rural people, and they are also an important way for farmers to increase income and become wealthy. Therefore, the following techniques should be mastered during harvesting: 1. Grasp the best harvest period. Various mushrooms and wood ear fungi are basically ready to harvest when they mature in July and August, when their appearance is beautiful, their color is fresh and glossy, and they taste good. Take shiitake mushrooms as an example: the signs of maturity in July and August are that the partial veil has broken, the cap has not yet fully opened, and there is still a slight inward curl, forming a "gong rim"; the gills have all elongated and changed from white to
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New Phalaenopsis variety 'Shannong Fenghuang' successfully bred in Guangdong
The new Phalaenopsis variety 'Shannong Fenghuang', bred by the Shantou Institute of Agricultural Sciences (postcode: 515021, tel: 0754-8101302), recently passed variety certification in Guangdong Province. The variety has a well-formed flower shape, with red flowers of vivid color; the petals and sepals have red lines, the petal base is white with a few red speckles, forming a striking contrast, and the lip is deep orange-red. The horizontal diameter of the flower is about 9.8 cm, the vertical diameter about 8.0 cm, the number of flowers is 7-8, and the spacing is about 3.6 cm. The flower stalk is 60-70 cm long,
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What are the patterns of silkworms spinning silk and forming cocoons? A full explanation of the process
The life of a silkworm goes through 4 stages: egg, larva, pupa and adult. The larval stage of the silkworm is what people call the silkworm baby stage. What is usually called sericulture refers to the rearing of the larvae. From hatching to cocoon spinning, the larva must go through 4 molts. People therefore divide the course of the larva into 5 instars. During the period before molting, the silkworm does not eat or move, which is called sleeping. From the first to the fourth instar, the silkworm must sleep 4 times; in the later stage of the fifth instar, it no longer sleeps, but spins silk and forms a cocoon, and pupates inside the cocoon, thereby completing the larval stage of the silkworm. Newly hatched silkworms are called ant silkworms, and newly molted
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How Are Candied Jujubes Processed? A Full Breakdown of the Production Flow
Candied jujubes are dried preserves made from fresh jujubes. The processing technique is as follows: 1. Raw material selection: Generally, varieties with large fruit, small pits, loose flesh, thin but tough skin, and relatively little juice should be chosen. The best fruit maturity is when the green color begins to fade and the fruit turns milky white. 2. Grading: Grade the jujube fruits by size, removing deformed fruits, fruits affected by pests or disease, overripe fruits, and damaged fruits. 3. Slitting: To facilitate sugar penetration and flattening into shape, the fruit surface is usually slit. The jujube fruits are fed into the channels of a jujube cutting machine (slitting machine) to be slit, with the cutting depth
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Haemanthus albiflos stays green through all four seasons and is full of vitality all year round
Haemanthus albiflos (white paintbrush lily) is a perennial evergreen herbaceous plant of the genus Haemanthus in the Amaryllidaceae family, native to southern Africa. The broad-leaved plants grow 20-30 cm tall, with a shortened or flattened-globose rhizome that is jointed. The leaves emerge from the base, are opposite, spreading and broad, usually 4-6 in number and neatly arranged. Haemanthus albiflos likes a sunny, warm, humid and well-ventilated environment. It is fairly drought-tolerant but not cold-tolerant, with an optimum growing temperature of 15-25°C, and requires well-drained, slightly acidic loam. The growing medium for cultivating Haemanthus albiflos can be made by mixing peat, leaf mold and river sand evenly. During the growing season
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Detailed Explanation of the Technical Key Points for Returning the Full Amount of Wheat Straw to the Field
Crop straw is an important by-product of crops. It is also an important production resource for agriculture and industrial production. Returning crop straw to the field not only avoids the environmental pollution problems caused by rotting and burning, and achieves feeding the land with the land itself, but also consolidates the foundation of soil fertility for greatly increasing soil organic matter content, improving soil structure, building up soil fertility, strengthening the quality construction of cultivated land, and raising crop yield and quality. In every agriculturally developed country in the world, great attention is paid to the scientific rationality of the fertilization structure and the
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How to Make Alaska Spicy King Crab Fragrant and Full of Flavor
[Ingredients]: 3 Alaska king crab legs, 50g spicy sauce, 200g spicy oil, 50g scallion, 50g minced garlic, 100g diced bamboo shoots, 50g roasted peanut kernels, 25g cilantro. [Method]: 1) Thaw the crab legs, then cut them into small pieces. Wash the cilantro and cut into sections; 2) Heat a wok, pour in oil until it is 70% hot, add the crab legs and fry briefly, then remove and set aside; 3) Add spicy oil, spicy sauce, scallion, minced garlic, bamboo shoots, and peanut kernels to the wok and stir-fry
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