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How to cultivate large-size fingerlings? Key measures to master
Fingerlings are the material basis for stable and high yield in adult fish production. Practice has proved that large-size fingerlings have stronger adaptability to the environment, ability to escape enemies, disease resistance and feeding ability, so the survival rate is high, the harvested size is large, and high yield can be achieved. To cultivate large-size fingerlings, in addition to carrying out feeding work such as "four fixed" feeding, "three looks" fertilizing, daily pond patrols and fish disease prevention and control, the following measures should also be taken: 1. Add fresh water to improve water quality. "When the water rises one cun, the fish grows three fen," "wide water raises big fish." During the rearing process
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How to raise shrimp well in midsummer? Master these key aquaculture techniques
In the hot midsummer season, hot weather, strong sunlight, high water temperature and poor water quality affect the shrimp's foraging and molting growth, and can easily cause disease and death in shrimp. During the hot season, farmers should carry out the following management work: implement water-based temperature control and oxygen regulation: as the water temperature rises and the shrimp grow, the water depth must be continuously increased, especially in the middle and late stages of farming, when the water level must be raised to 1.8 m-2 m, and during the high-temperature period it should be kept above 2.2 m. During the high-temperature period, complete drainage and complete refilling should be carried out, keeping the water temperature within 30°C and the water transparency at 35 cm, so as to favor
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Adding seasonings to pig feed can make pigs grow faster
Pigs have a well-developed sense of taste, with more than 15,000 taste cells in the oral cavity. Adding seasonings (flavoring agents) to feed can promote the secretion of the salivary glands, gastric glands and pancreas, increase feed intake and promote growth and development. The following seasonings are currently used more often.
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How to prevent and treat omphalitis in pigs? Pig farmers need to master these methods
1. Cause: During delivery, the umbilical cord is not strictly disinfected, or bacterial infection is caused by dirty sheds. 2. Symptoms: A few days after birth, the umbilical cord is moist and swollen, the base of the umbilical cord is red and swollen, sometimes there is an abscess around the umbilical opening, pus is discharged from the umbilical cord, ulceration occurs, the umbilical area is painful and the pig arches its back, and it is reluctant to move. Metastatic arthritis often occurs, and affected pigs have poor appetite, fever, diarrhea, and lameness. 3. Prevention and treatment: During delivery, the umbilical cord should be disinfected with iodine tincture. When the umbilical cord is inflamed, the Chinese patent medicine "Jiuyidan" can be applied externally, or penicillin can be injected around the umbilical opening; the umbilical area
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What are the methods for disinfecting chicken drinking water? Poultry farmers need to master them
1. Bleaching powder: add 6-10 grams per ton of water, mix well and let stand for 30 minutes before drinking. 2. Kangduwei (antiviral disinfectant): dilute at a ratio of 1:5000, stir well and let stand for 2 hours before drinking. 3. Potassium permanganate: use at 0.01% concentration, mix fresh each time for immediate drinking, 2-3 times per week; this agent can also serve as a manganese supplement. 4. Baidusha (disinfectant): dilute 50% Baidusha at a ratio of 1:1000-2000 for chickens to drink. 5. Peracetic acid: 20% peracetic acid, add 1
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How to prevent and control mushroom pests and diseases? These methods you need to master
1. Mushroom brown rot: also known as mushroom Mycogone perniciosa disease, bubble disease, white rot, etc. It is currently the most harmful disease in mushroom cultivation. In addition to harming mushrooms, it can also harm oyster mushrooms, straw mushrooms, silver ear fungus, reishi mushrooms, etc. The disease shows different symptoms at different developmental stages of mushrooms. When mushrooms begin to form small pinhead primordia (before fruiting body differentiation), they are susceptible to infection, forming hard, puffball-like irregular tissue masses. These are covered with a layer of white fluffy mycelium, which later darkens and finally turns dark brown, with dark brown droplets exuding from the diseased tissue. Small mushroom primordia beneath the casing soil can also
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How to fertilize mushrooms? These 8 steps must be mastered
During mushroom production, generally after three harvests, the nutrients in the compost decrease, the acidity rises, the vitality of the mycelium weakens, and the yield and quality decline. To achieve high quality and high yield of mushrooms, supplementary fertilization must be carried out. The specific methods are as follows: 1. Take rotted pig and cow urine, boil for 20 minutes, filter, then spray diluted with 10 to 20 times clear water, and after spraying, spray once more with clear water. 2. Take rotted and sun-dried straw, add 100 times clear water and boil into a liquid, and spray after it cools, which can make mushrooms robust. 3. When mushroom yield drops sharply, clean
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Feeding concentrate to rabbits requires care: master the scientific feeding method
Concentrates include energy-based feed ingredients such as corn, barley, wheat, sorghum, wheat bran and fine rice bran, as well as feed ingredients with high protein content such as soybean meal, rapeseed cake, fish meal, silkworm pupae and blood meal. Their common characteristics are low crude fiber content, low moisture content and high nutritional value. To increase the weight gain rate of meat rabbits, make wool rabbits produce more wool and rex rabbits produce more high-grade fur, concentrates are indispensable. The principle for using concentrates is to follow the nutritional needs of different types of rabbits and, according to the different regions and different
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Four key points to master in rice fertilization
First, pay attention to applying sufficient organic fertilizer. Organic fertilizer contains various nutrients, can improve soil aeration and its characteristics of absorbing fertilizer and retaining water, promote robust growth of rice plants, and achieve high yield and good quality. Organic fertilizer is mainly used as base fertilizer, applying 30-40 loads of decomposed farmyard manure per mu, or 30-40 kg of cake fertilizer, and 40-50 loads of human and livestock manure can also be applied after plowing and before flooding. Second, pay attention to controlling nitrogen fertilizer. Excessive application of nitrogen fertilizer to rice will not only cause an increase in ineffective tillering, greening, lodging, and intensified pests and diseases, leading to more empty and shriveled grains, a decline in the seed-setting rate, and affecting rice yield.
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What are the technical measures for drought resistance and disaster mitigation in rice cultivation in Heilongjiang Province?
In response to the actual drought situation, the Rice Expert Guidance Group of the Ministry of Agriculture conducted in-depth research in drought-affected rice areas and proposed technical measures for scientific drought resistance and disaster mitigation to ensure increased rice production. 1. Strengthen the management and scheduling of irrigation water sources. Actively develop water sources, organize as much as possible the pumping of return flow and the use of water-lifting irrigation machinery to utilize rivers, lakes and groundwater, alleviating the contradiction of insufficient reservoir storage. For plots far from water sources, promptly dig supplemental water wells to ensure a safe water supply during severe drought seasons. Strengthen the management of existing water resources and the clearing, repair and film-mulching of main irrigation canals to prevent seepage and leakage. Scientifically regulate
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