A, freshwater shrimp farming conditions and technology
1, freshwater shrimp ponds must be built in the ventilation to the sun, water drainage is convenient, sufficient water pollution-free places. Constructed after the first disinfection treatment to ensure that sterile and non-toxic. Stocking shrimp fry generally in the spring of March-April, when the climate is more suitable, conducive to the growth of shrimp fry. Usually you can feed the bait in shallow water, and at the same time, we should often patrol the pond, observe the growth, and adjust the water quality in time. 2, shrimp pond area of 3-5 acres, water depth of 1.5-2.5 meters, fresh water sources, pollution-free, sandy bottom of freshwater ponds or shrimp ponds. In the shrimp fry stocking 1 week before, be sure to use 60-80 cm sieve silk screen filter, into the water 30 cm, mu Shi base fertilizer 50 kg or urea 5 kg to cultivate the basic bait. 3, generally in late May the water temperature will stabilize at 18-20 ° C, this time you can stock shrimp seedlings. Shrimp seedlings need to be more than a week of time desalination treatment, specific gravity 1.003 or less before stocking. General mu put 0.7-1.0 cm shrimp fry 3-4 million can be, 0.7 cm seedlings need to be temporary, shrimp ponds can also be mixed with 10-20 cm chub fish species 80-150 tail. 4, shrimp seedlings in the pond within 1 month basically do not need to feed with bait, mainly relying on the plankton in the pond for food can be. 1 month can be fed with bait, supplemented by fresh fish, shellfish, etc., the bait rate is generally shrimp weight 3% -5%. 7-9 months can be an appropriate increase in the amount of bait to the main bait is not leftover residual bait, baiting 2-3 times a day, daytime casting accounted for 1/3, 2/3 in the evening can be.Two, freshwater shrimp farming notes
1, the quality of the water will directly affect the healthy growth and development of shrimp, aquaculture process, the pH value of the pool water must be maintained between 7.5-8.5, the transparency of the 30cm-40cm, and often refill with new water, regularly sprinkled with quicklime solution. 2, generally raised more than 1 year shrimp in the earth pond residual bait and feces will begin to accumulate, making the pond water shallow, toxic substances began to increase. So before putting shrimp fry must be a high standard, high quality shrimp pond desilting work, desilting area to reach 100%, to ensure that the pond water depth of 1.5m or more, and then use bleach to remove bacteria. 3, usually must adhere to the observation, strengthen the water quality monitoring, while improving the prevention and control of disease technology. Timely and accurate analysis of shrimp, water conditions, pool conditions, day conditions, early discovery, early prevention and treatment. If you find shrimp and small fish have been upstream to the water surface, it means that the water lack of oxygen, which is the precursor of shrimp floating head, be sure to open the oxygenator.