The latest Technology of Shrimp Culture in greenhouse

When it comes to lobster, I think you are all too familiar with it. The demand for lobster in China is very large, especially with the continuous rise of the midnight snack industry in recent years, the market share of lobster is increasing, and there are many lobster restaurants. Therefore, the market prospect of lobster is still very good.

The latest Technology of Shrimp Culture in greenhouse

Cultivate early propagation shrimp seedlings in plastic greenhouse, raise Macrobrachium rosenbergii from May to mid-August, raise Macrobrachium rosenbergii again from mid-August to October, or raise Macrobrachium rosenbergii in the first season from June to September, and another season of green shrimp from October to May of the following year. In this way, two seasons of shrimp culture in one year can make full use of the water surface and feed resources to greatly improve the economic benefits of shrimp culture in ponds, which is worth popularizing. 1. Select Tangkou: the pond area is 8-10 mu, the water source is abundant, the water quality is good, the water depth is more than 2 meters, and the slope ratio is 1:25. The newly opened pond will also open shrimp ditches 1 to 4-6 meters wide in the middle of the bottom of the pond to facilitate fishing. According to the scale of culture, high irrigation and low discharge technology will be adopted to build a good drainage system. 2. Do a good job in seedling cultivation: raise Macrobrachium rosenbergii for two seasons, build a plastic greenhouse ahead of time, purchase early propagation shrimp seedlings for intensive cultivation from late March to early April, and strive to reach 3cm in the middle and last ten days of the month to ensure the need for stocking in the previous season. at the same time, in mid-late May, the shrimp species specifications reached 3cm before and after mid-August, and the shrimp species reached 3cm before and after August. Raise Macrobrachium rosenbergii in the previous season and raise green shrimp in the latter half of May, buy Macrobrachium rosenbergii seedlings in mid-late May, cultivate them in a special pond, select a breeding pond in early June, set up small cages as cadres, and breed green shrimp with eggs. At the end of September, the specification of shrimp species is about 3 cm.

3. Reasonable stocking: raise Macrobrachium rosenbergii for two seasons, with 0. 8-10, 000 shrimp per mu in the previous season and 1-12000 per mu in the later season. In the previous season, the second season of Macrobrachium rosenbergii, Macrobrachium rosenbergii released 20-25000 shrimp seedlings per mu, or 1-15000 shrimp species per mu, and 15-20 000 shrimp species per mu. Clean and disinfect shrimp ponds before stocking, cultivate basic bait, transplant aquatic plants and so on. Choose Qingtian morning stocking, pay attention to the temperature difference is not too large. 4. Feed: two shrimp can be fed with a series of compound feed of Macrobrachium rosenbergii and prawn respectively. To raise Macrobrachium rosenbergii, snail, clam and clam meat can be fed mainly in Taihu area, supplemented by formula feed, while in other areas, series formula feed is given priority to, and small fish and shrimp are fed appropriately. Usually, the protein content of the feed is more than 35% in the juvenile shrimp stage and more than 32% in the adult shrimp stage. Feed is mainly fed once in the evening, accounting for about 70% of the total daily feed. The feed is put in the deep water area during the day and in the shallow water grass bushes at night, and fed regularly, quantitatively and qualitatively. The daily feed amount of Macrobrachium rosenbergii shrimp is 5-10% of the body weight of the shrimp in the pond and 3-5% of the green shrimp. 5. Water quality management: from May to June, the water depth of the pond should be maintained at the initial stage of shrimp fish or shrimp stocking; during the high temperature season from July to September, the pond water should be filled up, and the autumn weather is cloudy and rainy and sultry. According to the water quality, fresh water should be injected once every 7-10 days. At ordinary times, strengthen water quality testing and pond patrol. 6, timely start fishing: two seasons of Macrobrachium rosenbergii, starting at the beginning of the previous quarter, and then starting at the beginning of the month, one season of Macrobrachium rosenbergii and one season of Macrobrachium rosenbergii, which began to catch large and stay small in the middle of the month and listed in batches and listed in batches. If there are conditions, we can adopt the method of temporary culture in a plastic greenhouse and choose some commercial shrimp to be sold before and after the Spring Festival when the price is high.

What does lobster eat?

Both physical feed and animal feed can be eaten. Mainly plant feed. Plant feed includes plant straw, aquatic plants, roots and leaves of aquatic plants, algae, filamentous algae, organic debris and so on. Animal feed includes aquatic insects and screws, mussels, fish and so on. Crayfish often fight each other for food river living in caves, killing each other when food is scarce. Prawns eat small shrimps and eat soft ones with hard shells. Therefore, crayfish are most likely to be eroded during molting and not long after molting. During this period, pay attention to maintain adequate bait, can effectively prevent lobsters from killing each other.

Matters needing attention in lobster culture

1. Strictly clean the pond and disinfect it. The shrimp pond should be exposed to the sun for 15-20 days until the surface of the pond is dry and cracked. Two weeks before planting, a small amount of water was injected, the bottom of the pond was evenly scattered after melting with 100kg quicklime per mu, and the bottom was raked once in the silt by artificial method, and the whole bottom was covered with water every few days, sprinkled in the whole pool with 2kg chlorine dioxide and soaked 50kg rapeseed cake per mu, 2-3 days later, the disinfection water was released, the pool was sunburned for 3-5 days, and then filtered and injected with new water.

2. Improve the pond conditions of lobster culture. The environment, area, water depth, water quality index and other basic conditions of the culture pond should meet the GB/T18407.4 standard. The water source does not have any pollution, the water quantity is sufficient, the water quality conforms to the NY5051 standard, the intake and drainage is convenient. The shrimp pond is rectangular, broad and sunny, with a flat bottom, sandy soil or loam. During the shrimp growth period, the PH value, ammonia nitrogen content, nitrite content and dissolved oxygen of shrimp pond water quality can not exceed the standard.

3. Choose and buy high-quality shrimp seedlings. Before selecting and purchasing shrimp seedlings, it is necessary to investigate the production license, credibility and parent shrimp sources of the seedling farm, the cultivation of shrimp seedlings sold over the years, the use of drugs during the breeding period, and so on. Shrimp seedlings should be tested by the inspection and quarantine department before leaving the scene, and do not enter the seedlings from the epidemic area to prevent pathogens from entering.

4. Strengthen the management of water quality. Appropriate water supplement and fertilization during lobster culture, maintain a certain degree of fertility of water quality, adjust the composition of algae in the water, make green algae or diatoms become the dominant population, and open to a certain number. The indexes such as dissolved oxygen, ammonia nitrogen, nitrite and PH value are measured every 7-10 days. If a certain index is uncomfortable, relevant measures should be taken in time. After one month of stocking, the shrimp seedlings should use the microbial preparation once every 10-15 days to remove the harmful substances in the pond; after two months of culture, attention should be paid to improving the substrate, such as using the substrate modifier, turning on the aerator to increase oxygen, and so on.

Matters needing attention in lobster culture

First of all, create a good environment for lobster growth. As the lobster loves to drill holes, the general depth of the cave is 50-80cm, and the depth of some caves is more than 1m. In order to avoid digging and escaping, the ridge width around the breeding water body should be more than 1.5m, and 0.5m high anti-escape net or smooth inner wall, anti-escape board should be set around the ridge, and the purse seine should also be buried 2m deep to prevent the lobster from escaping.

Secondly, feed reasonably. Since lobsters kill each other when they are hungry and underfed, feeding must be adequate. And the lobster feed is animal and plant feed. The plant feed is wheat, water grass, rapeseed cake, etc., and the animal feed is miscellaneous fish, meat and animal viscera. Usually, the feeding time, feeding amount and feeding method are determined according to the habit of lobster in the day and night and the density of shrimp in the pond.

Finally, do a good job of scientific fishing. Under the condition of suitable temperature and adequate feed, the young shrimp can grow to the commercial specification in 90 days. The seedlings were released in March and the rotation began around June, selling big and keeping small.

With the continuous development of China's aquaculture industry, more and more people raise shrimp, but the techniques of raising shrimp are different, so raising shrimp in greenhouse is also a relatively good culture project at present, and farmers can communicate and learn from each other before.