1, catch dredging in addition to wild. Any shrimp raised more than one year shrimp pool, due to the accumulation of residual bait and feces in the pool, has made the pool water shallow, toxic substances increased, so before putting shrimp seedlings must be a high standard, high quality and seriously carry out shrimp pool desilting work, desilting the area to reach one hundred percent to ensure that the pool depth of 1.5 meters or more. Later, the use of bleach for "in addition to wild".
2, grasp the fertilizer bait, timely seedling. late April to the shrimp pond water, so that the water depth of 0.5 meters, 2.5 kilograms of urea per mu. So that the pool of algae, rotifers and other large numbers of breeding, in order to achieve the purpose of fertilizing the breeding of basic bait. 20 days before and after May, the appropriate amount of seedling, 3 to 40,000 tails of seedling per acre, be sure to put disease-free robust shrimp seedling.
3, grasp the regulation of water quality. In the shrimp pre-cultivation, less frequent water changes. When the pool water transparency down to 15 cm to 20 cm, to change the water, the amount of water accounted for pool water 1/2. mid-raising, every 10 to 15 days to change the water, the amount of water for the pool water 1/4. water change method is to drain the bottom of the pool water first, then add new water. Be sure to prevent that side of the drainage, this side of the water into the mixed water shrimp, in the rainfall more flood season not to engage in large drainage and irrigation, but the surface layer of fresh water drainage to ensure that the salinity of the pool water is relatively stable.
4, grasp the reasonable baiting. To make their own push net a, every morning at 5 a sample of 50 to 100 tails, carefully observe the shrimp's stomach and growth. At the same time, using a spinning net to determine the amount of survival of shrimp in the pool, in order to achieve a clear picture, reasonable baiting. In the late stages of shrimp feeding 6 times a day, before sunrise and after sunset each bait feeding, accounting for 40% of the daily baiting, feeding every 4 hours at night.
5, grasp to prevent floating head. To adhere to regular observation, strengthen water quality monitoring, improve disease prevention and control techniques, timely and accurate analysis of water conditions, pool conditions, days, shrimp conditions, early detection, early prevention and treatment. When found midge shrimp, small fish leaning, indicating that the water lack of oxygen, is the precursor of shrimp floating head. At this time to work around the clock to make the water alive, can also engage in artificial waves, artificial oxygen, cast ice cooling, put the oxygen enhancer. Baiting can not be easy in the second half of the night when the lack of oxygen to cast bait. Do not find floating head stirred up slag flooding, which can only aggravate the death of shrimp.
6, catch shrimp shellfish, fish mixed. Adhere to shrimp and shellfish mixed and shrimp and fish mixed, not only greatly improve the pool area and feed utilization, reduce the cost of shrimp, but also conducive to the development and growth of shrimp, improve shrimp production, to prevent shrimp floating head deaths, increase the benefits of shrimp pond.
The current freshwater shrimp farming methods are mainly pond shrimp, shrimp net box, paddy shrimp, shrimp net around the shrimp, etc., can be single-farming, but also the implementation of fish and shrimp mixed farming. Each method of shrimp farming has its own different characteristics and requirements (a) pond shrimp The last two years, we are in freshwater shrimp farming, pay attention to the basic construction of shrimp ponds, insist on stocking specifications shrimp seedlings.