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Six fish feed formulas, useful reference for scientific fish farming
1. Suitable for tilapia in flowing water and cage culture: grass meal 20%, fish meal 30%, soybean cake 20%, corn gluten meal 20%, rice bran 20%, wheat bran 10%, corn flour 5.5%, bone meal 1%, salt and vitamins together 0.5%. 2. Suitable for grass carp: sweet potato vine meal 45%, soybean cake 13%, rice bran 15%, wheat bran 12%, fish meal 3%, corn flour 10%, bone meal 1.5%, salt 0.5%. 3. Suitable for bighead carp, silver carp and grass carp: rice straw
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Fishery Science and Technology Collaboration Network: 100 Key Achievements in Aquatic Science and Technology
At the 2007 National Fishery Science and Technology Collaboration Network Conference that concluded today, a declaration was issued to the national fishery science and technology community on jointly advancing the "Ten Major Actions," and 100 key achievements in aquatic science and technology were introduced and released to the public. It is reported that the 100 aquatic science and technology achievements cover disciplines and fields such as resource conservation and development, aquatic species breeding, healthy aquaculture, aquatic disease prevention and control, aquatic product quality and safety, and fishery equipment and engineering. They include both national-level major achievements in high and new technology and the promotion of independent innovation, as well as those oriented to industry development needs
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How to fertilize oats scientifically? A detailed technical Q&A
What are the symptoms of boron deficiency in rapeseed? How should boron fertilizer be applied? Answer: Boron is one of the essential trace elements for the normal growth and development of rapeseed. Rapeseed has a relatively high demand for boron and is also quite sensitive to it. When boron is deficient at the seedling stage, root development is poor, with very few fine roots, branch roots, and root hairs, the root crown becomes swollen, and young leaves lack chlorophyll, turn brown, and may even scorch and drop off. When boron is deficient at the bud and bolting stage, the leaves are dark green and wrinkled, the veins and nearby tissues turn yellow, purple patches appear, and the leaves drop early. At the flowering stage, the flower buds at the top of the inflorescence fade from green to yellow, shrink until they dry up and drop, the petals wrinkle, and the pods
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Detailed Explanation of Garlic's Fertilizer Requirements to Help You Fertilize Scientifically
Garlic roots are string-like fleshy fibrous roots, mainly distributed within the 20-25 cm plough layer, making it a shallow-rooted vegetable. It responds sensitively to fertilizer and water, and has the distinct characteristics of relishing fertilizer and tolerating fertilizer. Garlic has very few root hairs, and they are fine and weak, so the roots' ability to absorb fertilizer is poor. The nutrients needed for garlic sprouting are all provided by the seed clove. As the seedlings grow, the nutrients stored in the seed clove are gradually exhausted, commonly known as "mother clove retreat." At this time, quick-acting fertilizer should be applied to ensure seedling growth and cultivate strong seedlings. After mother clove retreat, growth depends entirely on soil nutrient supply. Garlic's bulbils and flower buds differentiate
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Detailed Key Points of Pear Orchard Soil Management, Essential Reading for Fruit Growers Practicing Scientific Cultivation
Pear trees have strong stress resistance and wide adaptability, and can be cultivated on sandy land, mountainous land and hilly land. The planting soil is preferably a relatively fertile sandy loam with deep soil layers and good drainage. 1. Deep plowing of pear orchard soil Deep plowing can deepen the root distribution layer, make the roots develop deeper into the soil, reduce "surface-floating roots", improve drought resistance and absorption capacity, and has a significant effect on rejuvenating tree vigor and improving yield and quality. In production, the alternate-row deep plowing method is often used, and it takes 2 to 3 years to complete all the plowing; the ring-ditch method of expanding the planting hole can also be used. The deep plowing time is best completed before leaf fall in autumn,
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How to raise parent pigeons? A detailed guide to scientific management methods
Strengthen the feeding and management of parent pigeons to improve egg production rate and fertilization rate. The following introduces the problems and practices encountered in the feeding and management of parent pigeons during the laying and brooding periods. 1. Prevent pigeons from laying infertile eggs, soft-shelled eggs and deformed eggs. In the early stage of laying, the number of infertile eggs will be somewhat higher, but the fertilization rate should still reach above 70%. Below this rate, it is abnormal, and you should check whether the pairing of the pigeons is reasonable, whether there are cases of all males or all females, and whether the health grit is supplied according to the formula and requirements. 2. Minimize broken eggs
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Detailed Explanation of Key Points of Scientific Irrigation Technology for Cotton
Cotton is a taproot crop, with the main root penetrating relatively deep into the soil, making it a relatively drought-tolerant crop. The period from squaring to boll opening is the critical period for water demand. 1. Conventional irrigation: Irrigate 3-4 times throughout the growth period. The first irrigation is at the squaring stage, i.e., mid-to-late June; the second irrigation is at the full flowering stage, i.e., mid-July; the third is at the flowering and boll-setting stage, i.e., from late July to early August; by the initial boll-opening stage, if the weather is dry or the soil is sandy and prone to leakage, one more irrigation may be applied. If there is abundant rainfall and no sign of drought, watering may be discontinued. Apart from 120 cubic meters per mu for the pre-planting water, the irrigation quota for each application during the growth period is 6
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Red body disease in freshwater shrimp (Macrobrachium nipponense) causes explosive mortality - how can it be scientifically prevented and treated?
Red body disease causes explosive mortality in freshwater shrimp - how to prevent and treat red body disease in freshwater shrimp
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How do you carry out selection and mating of geese? Scientific methods teach you to choose good breeding geese
Selection of breeding geese: Methods for retaining breeding stock Selection of breeding geese should be carried out in the following two periods: the first selection is carried out when the breeding geese are 70-80 days old. Those that grow and develop quickly, have a large body weight, are in good health, and whose plumage color and other appearance characteristics meet the requirements of the breed are retained as breeding geese, and the number retained should be 10%-20% more than the planned number of breeding geese. The second selection is carried out when the breeding geese are 180-200 days old. At this time, the breeding goose flock has developed sufficiently, and the secondary sexual characteristics of the geese are obvious. Breeding ganders are required to have a large head and thick neck, a robust physique, well-proportioned development of all body parts, wings held close to the body, and a prominent frontal caruncle
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Good Methods for Medicating Sick Pigs: Scientific Medication Promotes Recovery
After a pig falls ill, choosing the appropriate method of administering medicine can not only improve the efficacy of the drug, shorten the course of treatment, and enable rapid recovery, but also reduce drug waste and save on medication expenses. 1. Fasting medication method: This method is suitable when the sick pig has an appetite and the drug has no special odor. The specific practice is: in the morning when the sick pig is fasting, mix the drug into a small amount of feed the pig likes, and give it so that it eats it all quickly. Administering the drug this way neither wastes the drug nor fails to achieve the expected effect. For deworming pigs, this method works best.
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