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Mysid Culture Methods and Technical Key Points
(1) Culture species In the 1970s, mysids were cultured in Shantou, Guangdong and Fujian, or collected from natural waters as feed for seahorses; the Shandong Rizhao Mariculture Experimental Station used earthen ponds to culture Neomysis awatschensis and achieved good results. At present, in China along the coast of Shandong, in-depth research has been conducted on the biology of Neomysis awatschensis; in Japan, Neomysis vulgaris, Neomysis japonica, Neomysis perfecta, and Neomysis intermedia have all been studied in terms of live biology or fisheries biology. All of the above species can be listed as culture species.
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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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Technical key points and precautions for stocking fish fingerlings in winter
1. "Five conversions" of fish ponds. Convert "small ponds" to "large ponds", "stagnant ponds" to "live-water ponds", "shallow ponds" to "deep ponds", "leaking ponds" to "water-retaining ponds", and "emergency ponds" to "flood-control ponds". When renovating ponds, first drain the pond water, and after sun-drying, remove excess sludge from the pond bottom, keeping only a 15-20 cm layer. Remove weeds, dredge channels, and raise the pond embankments. 2. Pond clearing and disinfection. Keep the pond at a water depth of 10 cm. First, for every 667 sq m of water surface, use 90 kg of quicklime or 4 kg of bleaching powder containing 30% chlorine,
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Prevention and Control Methods and Technical Key Points for Common Multiple Diseases in Pigs
The common multiple diseases of pigs mainly include: piglet Escherichia coli disease, transmissible gastroenteritis, epidemic diarrhea, asthma, and piglet hypoglycemia. These five common diseases of pigs seriously affect the normal growth and development of pigs, hinder the development of the pig industry, and often cause massive pig deaths. Therefore, the prevention-oriented policy of prevention and control must be implemented, and careful prevention and treatment must be carried out to take preventive measures, and one must never take it lightly, so as to ensure the smooth development of the pig industry. Piglet Escherichia coli disease Piglet Escherichia coli disease has the following three manifestations: early-onset
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Technical Guidelines for Protecting Cotton Seedlings in Spring Planting
"Half the yield comes from good seedlings." Since late March, cotton sowing has been rolled out across the country. Because cotton prices opened high and kept rising last year, cotton production has shown a recovery trend this year, seed markets in various places started early, and seed sales have rebounded noticeably. In view of last year's abnormal climate, with rainy and low-temperature autumn weather, many rotten bolls and generally poor seed quality, plus the low temperature and drought of last winter and this spring, preparations must be made in advance and active responses taken to unfavorable weather of low temperature, drought or high humidity. According to forecasts from the Central Meteorological Observatory, there is a high probability of high temperature and drought this spring, so it is even more necessary to lay a
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How to manage cotton in the mid-to-late stage? Hebei strengthens technical guidance
At present, spring-planted cotton in Hebei Province is successively entering the flowering and boll-setting stage from south to north. Due to a good sowing foundation, timely field management, abundant early rainfall, and sufficient sunlight, the cotton in Hebei Province has a neat plant type, steady growth, relatively light pest and disease damage, and field growth is generally better than in previous years. Recently, the provincial cotton expert advisory group conducted a field survey of cotton in 21 counties (cities) across 4 cities: Handan, Xingtai, Hengshui, and Cangzhou. According to the survey, the average plant height is 60-70 cm, the number of main stem leaves is 15-17, and the number of fruiting branches is 8-12. The growth and development process is basically normal, and a foundation for high yield has been established.
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Key Technical Points for Diversified Multi-Cropping Three-Dimensional Cultivation of Cotton in the Huaibei Region
Diversified multi-cropping three-dimensional cultivation is a high-yield, high-efficiency agricultural production form and supporting comprehensive technical system that conforms to biological population structure. Developing diversified multi-cropping three-dimensional cultivation can achieve good economic, social and ecological benefits. I. Mechanisms for developing diversified multi-cropping three-dimensional cultivation of cotton in the Huaibei Region. 1. Adapt to local conditions and emphasize efficiency. Three-dimensional cotton cultivation involves multiple crops, multiple factors and multiple disciplines, and is highly time-sensitive, regional, comprehensive and scientific. Therefore, appropriate timing and varieties should be selected for cultivation in combination with the land, climate and other conditions of the Huaibei Region.
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Detailed Explanation of Key Technical Points for Schisandra Harvesting and Seed Treatment
Schisandra seeds have a dormant characteristic: the seed coat is hard and smooth, with an oil layer beneath the coat that resists water and air penetration; in naturally matured seeds, the embryo is small and has after-ripening characteristics. Seeds with the flesh removed have a relatively short lifespan; generally after 2 months of dry storage at room temperature, seed viability declines. Wild seeds usually have an extremely high rate of empty grains. Mature seeds commonly come in two colors: one is darker, appearing dark red, with higher maturity but slower germination; the other is orange-red and germinates more easily. Northern schisandra (Schisandra chinensis) generally enters the coloring stage in late July, and the sugar pigments in the fruit increase as the fruit matures
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Schisandra Pruning and Training Methods and Key Technical Points
The principles of training and pruning are: keep strong main vines to ensure rational use of space; remove old canes and keep few; keep medium and long branches, remove short branches and basal branches; remove diseased, weak, overcrowded and senescent branches. (1) Trunk heading: after transplanting, the trunk must be headed. The standard for trunk heading is: select and keep 2-3 plump buds, and cut back at 3-5 cm from the ground diameter. The time for trunk heading is the following spring, after the snow melts and before the plant begins to grow. After the plant sprouts, keep 2 strong vines, and no more than 3. After trunk heading, use 2 strands of acrylic wool, tie one end together and fasten it to a wooden stick about 10 cm long,
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Processing Methods and Technical Points for Schisandra Fruit Vinegar
Fruits contain abundant sugar resources and are superior raw materials for vinegar brewing. Compared with grain vinegar, fruit vinegar has richer nutritional components, being rich in acetic acid, succinic acid, malic acid, citric acid, various amino acids, vitamins and bioactive substances, with a mellow taste, rich flavor, fresh and refreshing character and unique effects, and can soften blood vessels and lower blood lipids. Fruit vinegar is acidic, but after being absorbed and metabolized by the human body it becomes an alkaline food. Fruit vinegar has the following health benefits: (1) The volatile substances and amino
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