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Fish Farming: Suitable Dosages of Medication for Several Fish Species
The dosage must not be too high, otherwise it may cause phytotoxicity to the cultured species. In particular, fish such as freshwater pomfret (piaractus brachypomus) and mandarin fish are sensitive to certain medications, and improper use can easily cause death. 1. Freshwater pomfret. Freshwater pomfret is most sensitive to organophosphorus pesticides. Therefore, the use of medications such as trichlorfon and dichlorvos is prohibited. 2. Mandarin fish. Mandarin fish is relatively sensitive to medications such as trichlorfon and copper chloride. When the concentration of trichlorfon is above 0.2 ml/L, or the concentration of copper chloride is above 0.7 mg/L, it can cause poisoning and death in mandarin fish. Therefore, it is necessary to master
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What is the most suitable temperature and humidity inside a snake enclosure?
Snakes are ectothermic animals, and changes in temperature greatly affect their growth and activity. Therefore, controlling the temperature and humidity inside a snake enclosure within the range suitable for snake growth and activity is another key issue in artificial snake farming. Generally, a temperature of 20-30°C is most suitable for the growth and reproduction of snakes. If it falls below 10-13°C, snakes curl up and become inactive; if in an environment above 40°C or below 0°C, weak and thin snakes will die in large numbers. So, in the process of artificially raising snakes, special attention must be paid to the outside
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What are the key cultivation points of the potato-rice-vegetable rotation model?
The potato--rice--vegetable model is mainly promoted in mid- to high-altitude areas. The key cultivation points are as follows: (1) For potatoes, choose late-maturing varieties with high resistance to late blight, such as Jizhangru No. 5. (2) For late rice, it is advisable to choose high-quality combinations such as Liangyou 2186 and D702 Youduoxi No. 1, so as to take advantage of the large day-night temperature difference in autumn in mid- to high-altitude areas and the good grain filling of rice. (3) In mid- to high-altitude areas, winter temperatures are relatively low, so for winter vegetables it is advisable to choose cold-tolerant types and cold-tolerant varieties.
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What temperature requirements does soybean growth have? Detailed explanation of the suitable temperature range
Soybean is a warm-season crop and has different temperature requirements at each growth and development stage. First, seed germination is very sensitive to temperature: the minimum germination temperature is 6°C, emergence is 8-10°C, and seedlings suffer slight frost damage at a low temperature of -4°C. Throughout the growth period, the optimum growth temperature for soybean is a daily average temperature of 20-25°C, among which the optimum growth temperature for seedlings is 20-21°C, the flower bud differentiation stage is 21-23°C, the flowering stage is 22-25°C, the pod-setting and seed-filling stage is 21-23°C, and the maturation stage is 19-
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How profitable is Gastrodia elata cultivation? A planting income analysis
Question: How profitable is cultivating Gastrodia elata? Is it guaranteed? Answer: It can be said with certainty that the production benefit of Gastrodia elata is relatively high. At present, the purchase price of fresh Gastrodia tubers is generally around 40 yuan per kilogram. Calculated at a yield of 10 kilograms per square meter, the output value is about 400 yuan. In the first year of planting, the input cost is about 200 yuan, and the production benefit is about 200 yuan; from the second year onward, using self-produced tuber seeds to expand the cultivation area, about 5 times the cultivation area of the first year, and at the same time using first-generation high-quality fungal strains to self-cultivate fungal wood, that is,
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What medicine is used for rabbit bacterial dysentery? Sanhuang tablets can treat it
Sanhuang tablets are an inexpensive and commonly used Chinese patent medicine, made from three herbs: rhubarb (Rheum officinale), coptis (Coptis chinensis), and skullcap (Scutellaria baicalensis). They are used to treat acute bacterial dysentery in rabbits. Each sick rabbit is given 1 Sanhuang tablet orally per dose, and young rabbits half a tablet, taken with warm boiled water. 3 times a day, for 3 consecutive days, and the effect is remarkable. Pregnant female rabbits must not take it.
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Golden Crown, a new yellow peach variety, is suitable for both canning and fresh eating
Golden Crown is a new yellow peach variety for both canning and fresh eating, selected from naturally crossed open-pollinated seedlings of Jinxiu. In September 2006, it passed expert appraisal organized by the Shandong Provincial Department of Science and Technology. The fruit is nearly round, with an average single fruit weight of 167 g and a maximum of 245 g. The skin is golden yellow, with no red blush, and the appearance is beautiful; the flesh is yellow, non-melting, does not brown, has good overall traits for canning processing, and is sweet-sour and palatable for fresh eating. It contains 13.8% soluble solids, 9.8% total sugar, and 0.67% total acid, with a rich apricot aroma and excellent quality; the pit is small and clingstone, and the
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Adding table salt to oyster mushroom substrate can increase yields
In oyster mushroom cultivation, using carbendazim to control contamination by foreign fungi is effective, but pesticide residues remain in the mushrooms, which is harmful to human health, and the cost is relatively high. According to experiments: when cultivating oyster mushrooms on raw substrate, adding 1.5 kg of table salt per 100 kg of dry substrate (dissolved in advance in a measured amount of water) and mixing thoroughly can prevent infection by foreign fungi and also bring mushrooms out 5-7 days earlier. At the same time, because table salt is rich in sodium, calcium, magnesium and other metal ions needed for oyster mushroom growth, if a 10% salt solution is sprayed in the early stage of fruiting body differentiation and after each flush is harvested, the mushrooms can be free of pesticide residues and their quality
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Reasonable Application Methods of Allicin Feed Additives
Allicin has the effect of improving the growth environment of livestock and poultry. The volatile sulfur-containing compounds in allicin can not only give off a special garlic odor to drive away mosquitoes, flies and insects from biting and sucking feed or manure, but also, under the action of enzymes in the bodies of livestock and poultry, be converted into allicin and excreted from the body to prevent mosquitoes and flies from breeding and growing in manure and urine, thereby improving the surrounding environment. Allicin has an anti-disease effect on livestock and poultry. Allicin can effectively kill various pathogenic bacteria such as Shigella dysenteriae, Pasteurella, Salmonella enteritidis, and Pseudomonas aeruginosa, and has the functions of enhancing resistance to viral diseases, and replacing
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Danjing 6 is a rice variety suitable for dryland cultivation.
Variety source: Bred by hybridization at the Dandong Academy of Agricultural Sciences. Characteristics: Growth period 130 days, plant height 90 cm, moderate tillering, well-developed root system, loose panicle type, panicle length 15.4 cm, average number of grains per panicle 104.4, sparse short awns, 1000-grain weight 25 g, mature with green stems, strong drought tolerance, resistant to rice blast and rice false smut, good eating quality. Suitable for planting in low-lying waterlogged land, rainfed rice fields, or dry fields with irrigation conditions. Cultivation points: Sow in the Dalian area from late April to early May, sowing rate 7-9 k
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