RuDong Greenhouses Shrimp Farming Model And Technology Optimizing

In recent years, the greenhouse cultivation model to breed the Litopenaeus vannamei is rapid development in Rudong County, Jiangsu Province. At the same time, the stocking density and the breeding scale also continue to increase. The greenhouse cultivation model in Rudong County mainly uses groundwater, and adjusting the water quality deterioration by changing the water at the late of breeding which lead to the overusing underwater of without planning. According to the survey, every 1 kg raising shrimps consume m3 of groundwater resources.In some areas there have been shortages of groundwater already in the fall of 2014.So it is the high time to solve the problem of underwater scarcity issue. Biological floc cultivation technique has such obviously advantages as low prices, good effect, no pollution and microorganisms bait, with feces and other harmful substances strong ability to decompose, it also can purify water,and reduce post-breeding for water,. It is really achieved so call "zero water exchanging." In this paper, In this paper, through the optimization of the local farming measures, including the transformation of pond construction, build a runway style pond and insall the aquaculture pond aeration device, which can help to push water in the ponds rotated to achieve water aquaculture. We also optimize the feeding times of three times a day, are in 7:00 am,16:00pm,11:00pm in the ratio of 3:4:3 to fed; at the same time, feeding mode is also optimized, a single pond bait tray placed improve ten, eighty percent of feed fed in bait tray on. It is good to optimization inflatable devices, and add every 10 days to vannamei culture ponds 10g/m3 husk powder and Bacillus BZ510,000 cf u/ml, for breeding experiments.. By studying the growth of shrimp, water quality factor (NO2-N, N03-N, Chl.a, TA) bacterial content (water Bacillus culturable Vibrio cultivable heterotrophic bacteria) of changes, to explore the effect of the biological floc directional control cultivation model, which can help providing a theoretical basis and technical support to achieve healthy and sustainable shrimp farming.1. the Bacillus degrade the ammonia and nitrite The effect of the Bacillus BZ5 degrade the ammonia is very obviously.,28h ammonia concentration to about 0.2mg/L,76h is done by reducing the degradation of 0.8mg/L of. Bacillus BZ5 degrade 50% nitrite concentration time is 76h. It is very hard to increase the degradation effection significantly of Bacillus degradation of ammonia nitrogen by adding water to different concentrations of cellulose.2. The application of Runway style ponds cultivation in the biological floc aquaculture breeding patterns of directional-control.Experimental setup runway pooled culture model and the control group did not transform pond culture model, by comparing the two modes of shrimp growth, changes in water quality factor analyzes pooled runway culture model in biological floc breeding patterns of directional-control application effect. The results show that the real runway battery pack prawn high yield 6.98% compared with the control group, shrimp weight is 9.04% in the control group, feed conversion runway pool group 8.21 percent lower than the control group. Ammonia concentration runway late breeding pond aquaculture water group was significantly lower (P<0.05) in the control group. Nitrite group began to rise rapidly at 20 days, the battery pack runway nitrite fast rise time is slightly later than the control group, post-breeding pond runway and control groups of nitrite in water are controlled at a lower 0.4mg/ L or so.3. Application of adding different carbon sources in farming the Litopenaeus vannameiIn this experiment, all of the runway pooled culture model by comparing adding 0.5g/m3 brown sugar group every five days to breeding pools, 1g/m3 husk powder group, and control group water quality indicators, water bacterial indicators, compare add different aquaculture effect of carbon sources. The results show that in the late breeding rice husk powder and add Bacillus group can significantly reduce the breeding pool nitrite concentration of ammonia also have a certain degree of reduction. Adding water to the farming of rice husk powder can promote the growth of Bacillus water, add rice husk powder group water aquaculture late Bacillus concentrated 4.33x103cfu/ml was significantly higher (P<0.05) in the control group 2.00x103cfu/ml. Add brown sugar and rice husk powder acts as a carbon source can significantly increase the chlorophyll content of the pond, providing natural food for shrimp growth.4.The greenhouse cultivation model Shrimp feeding model in rudong By studying the growth of shrimp, water quality factor,bacterial content,We established Rudong greenhouses shrimp farming model spring and fall feeding model.For accurate feeding bait, bait to reduce waste and achieve a healthy shrimp farming basis.5. Directional-control descend biological floc shrimp Cultivation enclosed technical specificationsBy the spring of 2014, the fall of two breeding experiments on shrimp growth, water quality factor (NO2-N, NO3-N, Chl.a, TA) bacterial content (water Bacillus culturable Vibrio cultivable heterotrophic bacteria) changes, as well as the breeding process problems and solutions, developed a model for breeding shed Rudong vannamei (Litopenaeus vannamei) to develop technology, water conditioning technology, biological floc directional regulation technical and environmental requirements of the site. To achieve healthy and sustainable shrimp farming mention technical support.