Keep crab grass pond eco-effective _2307

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Crab grass pond eco-effective care

Only between the 50.8O. Control of stocking density is appropriate in 600.800 temple, so as to raise a large-size high-quality crab. Heilongjiang Fisheries 133 21 Third, scientific feeding and careful management of 1, feeding: crab culture in accordance with the Four to see 4.5 months of low water temperature, pond plants less green fodder supply shortage, September is the accumulation period of Crab, the two feeding periods should be more concentrated feed to promote growth and yolk accumulation. 6-8 month, hot water temperature is high, the pond plants lush, crab feed sufficient resources should be mainly water plants, less investment and concentrate, and do animal and plant matched feed, green fodder and concentrate feed combination of feed nutrients to ensure diversity and avoid a single feed, nutritional deficiencies, impede growth. Animal feed, including small trash fish, Intestinal son, snail meat, beef blood and other waste. Plant feed, including watercress, wheat, corn, sorghum, etc., and for soaking or ripening. Green fodder, including submerged plants, emergent plants and floating plants. Crab with nocturnal habits, like the night feeding, feeding twice a day to ensure that. Volume control on feeding 510% of body weight in crab, 8:00 feeding at feeding amount of 1 / 3 of the evening feeding 5 2 / 3,[link widoczny dla zalogowanych], generally within 2 hours after eating is appropriate, and, as crab flexibly adjust the feeding amount of eating to avoid feeding too much and waste feed. Palatability of feed to fresh, nutritious, spoilage of the feed you want to disable, easy to cause deterioration in water quality of the feed to be used with caution. 2, Water: crab conditions require higher water quality, water quality prefer more thin, too fat for the control of water quality, plants must be planted or an appropriate mix of silver carp, bighead carp. The water level in the control of the entire culture period should adhere to the Medium-term 6-8 month, 1.1.2m. Late September to a pool 0.8-1m. And keep the water pH value of 7.5.8.5 between the dissolved oxygen in the 5mg / L or more. Water quality control in addition to plant the plants, but also pay attention to doing the tune live will be net, underwater ecological regulation of biological agents such as liquid water, generally used once every 15.2O days, so that in a good environment crab water growth. 3, Xuntang: every day for morning and evening Xuntang time, attention Fangtao, security, anti-disaster, disease, observed water quality, water temperature and feeding activity and moulting crab situation, look at dams, note outlet and Fangtao film, to enhance the management of preventive measures, identify problems promptly resolved. 4, disease prevention: adhere to the In May, respectively (the first crab shell, the water temperature at around 20%), early July (before the onset of the hot season) and late August to conduct a comprehensive killing, sterilization, and feeding herbal bait, do Good disease prevention. Way through the biological, ecological, and comprehensive drug control,[link widoczny dla zalogowanych], effectively control the disease occurs, the entire growing season crab physical health,[link widoczny dla zalogowanych], not disease. Fourth,[link widoczny dla zalogowanych], understand the market information, timely capture the sale in a timely investigation to understand market conditions, good listing of crab fishing. 9 months late,[link widoczny dla zalogowanych], yellow over time when crab is fat, the best quality at the same time has stimulated the two major festivals, it is timely fishing, sub-standard, sub male and female lay packaging sent to Liaoning, Hebei and other off-site volume sales, Liaoning, Hebei River Crab prices high, sales of fast, have great profit margins, although many intermediate links, increase the cost, but the overall efficiency is greatly increased. Qi crab grass this year, has just achieved remarkable economic and social benefits for the city to aquaculture farming structural adjustment with a good head, so that the city's rapidly expanding area of crab culture, the fishermen return significantly increased steadily crab pond , healthy and rapid development. Several high-temperature season, the prevention and treatment of bacterial fish diseases, Jinhua Wang Dongbo Guo Shuang (1. Nen Nen 1,614,002 Heilongjiang Fisheries Bureau. Jiayin County, Heilongjiang Fisheries Bureau Jiayin 153,200) hot summer weather, high water temperature, fish growth is strong, while harm fish class of pathogenic microorganisms and harmful substances are greatly increased, is the peak season of fish diseases. Here are a few summer months the symptoms of common bacterial fish diseases and control methods: 22

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Wang Lin, weird looking, he examined the diverse [link widoczny dla zalogowanych] locations and found out an exception.