Frozen Melon Dice,Frozen Melon Balls,Frozen Kiwi Slices WEIFANG ARTISAN FOODS CO.,LTD. , http://www.artisanfoods-wf.com
Rushan Exploring New Model of Shellfish Breeding
Shandong Rushan has a coastline of 185 kilometers and a beach area of ​​100,000 mu, of which 30,000 mu of shellfish can be cultivated and 21,000 mu have been raised, mainly distributed in Rushankou Neiwan and Qianhai Xiaojian to Dujiadao Neiwan. Most of the sediments are of soft mud and silt, a small part of which is sandy and rich in benthic diatoms, which are suitable for the growth of shellfish shellfish. Tidal flatfish shellfish farming has a history of more than 100 years in Rushan City. Varieties include variegated oysters, oysters, oysters, and barley. Tidal aquiculture plays a decisive role in the marine aquaculture industry and production. However, in recent years, along with the development of production and changes in the environment, there have been some problems that cannot be ignored in the mudflat culture, resulting in a decrease in the production and quality of farmed shellfish. In order to promote the healthy and rapid development of tidal flat shellfish production, the Rushan municipal government and relevant departments have made active efforts and achieved remarkable results. The problems in the production of tidal aquaculture in Rushan City are, first, the aging of tidal flat bottoms. Due to the uninterrupted farming year after year, the aging of tidal flats has caused the production capacity of tidal flats to be greatly reduced. After the death of shellfish, a large number of shells were deposited, causing serious pollution to the beach. The beach was over-utilized and overloaded. About 30% of the beach was deserted, 70% of the beach's production capacity was reduced, and production was reduced by 30%. The survival rate of shellfish shellfish is reduced to less than 50%. Second, the impact of shrimp pond aquaculture wastewater on beach culture. During the cultivation of shrimp ponds, the feeding of bait, the decomposition of bait, the production and decomposition of fish and shrimp excrement, etc., will make the cultured water rich in various nutrients and organic and inorganic debris. The total amount of effluent material discharged from shrimp ponds exceeds the environmental capacity of the larval rearing area and will also cause water pollution and eutrophication in the area. In addition, fish and shrimp disease prevention and control drugs are usually dominated by antibiotics, and large amounts of shrimp pond water rich in disinfectants and antibiotics are discharged, which has a direct impact on the microbial ecosystems in coastal waters. The normal microbial ecosystem is disturbed or destroyed, the decomposition rate of pollutants is affected, and the self-purification capability is significantly reduced, resulting in further deterioration of water quality. Second, it is the summer water temperature is too high. In the summer, land-based rainwater carried sediment into Rushan Bay, which caused sediments to accumulate on the mudflats. The mudflats caused water accumulation. In addition, summer high temperatures, water temperatures, and beach temperatures reached 30°C or more, and large areas of shellfish cultured shellfish died. Not only caused huge economic losses, but also polluted the water environment. The Rushan Ocean and Fisheries Bureau has adopted a scientific attitude to solve the problem of developing tidal aquiculture production. The first is to repair the modified beach bottom. The topic of “Rejuvenation and degradation of tidal flats in shellfish culture areas and demonstration experiments†undertaken by the Yellow Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences and the Marine Resources and Fisheries Bureau of Rushan City adopted measures to improve the beach quality such as plowing, leveling and sand pressure. And repair and control technology, improve the permeability of the beach, optimize the beach culture environment, so that the production capacity of the beach is restored, and take the road of intensive and high yield. After the implementation of the project, remarkable results were achieved. The survival rate of the mottled pupa in the experimental group was 11.4% higher than that in the control group, the body weight growth rate was increased by 30%, the shell growth rate was increased by 14.9%, and the yield was increased by 36.6%. The second is to adopt the Putian aquaculture model. In order to optimize the growth environment of the tidal flat shellfish, a ridge with a vertical trend is built on the tidal flat, or a square paddy field is built on the tidal flat in the direction of the tide. The ridge ridge and the paddy field have the function of impounding water. The advantage of this mode of cultivation is to increase the feeding and growth time of the shellfish shellfish, and at the same time improve the growth environment of the earthworm, so as to avoid the death of the beach shellfish caused by the high beach temperature caused by high temperatures in summer. The third is to adopt the combination of breeding ponds and beach culture. The seedlings of T. tanifolia were directly reared on the beach and the survival rate was relatively small. Spring seedlings can be sown in the shrimp ponds. Because the water quality in the shrimp ponds is good, and the food is sufficient, coupled with a long feeding time, the shellfish grows fast and has a strong physique. After the harvest of autumn prawns, the large-sized shellfish, which has grown into large size, are dug out of the shrimp pond and then reared to the finished tidal flat. In this way, the high temperature period in summer is avoided, which not only improves the survival rate of shellfish, but also increases the growth rate of shellfish, thereby increasing the yield and efficiency of shellfish breeding. Fourth, do a good job in shellfish breeding. Develop industrialized development of large-scale seedling cultivation technology for large-scale seedlings such as clams, barley, seabream, seabream, sea bream and other seawater shellfish, build and improve the breeding system for elite breeds, select and rejuvenate, and cultivate healthy shellfish seedlings. , cut off the spread of the disease, improve the ability of shellfish to resist disease and survival rate, thereby improving the quality and grade of shellfish products, and create a higher shellfish aquaculture production and efficiency.
Next Article
Biotechnology Crops Record Record Growth
Prev Article
Azalea Bonsai Winter Tube