In 2010, Jin Xiaolong, a giant prawn broodstock farmer in Zhouzhuang Town, Xinghua City, adopted micro-aeration and ecological disease prevention technology. Under the circumstances that the cost of R. rosenbergii seedlings and feeds increased, 25,480 kg of Macrobrachium rosenbergii was harvested in 49 acres of ponds. An average of 520 kilograms of acre, 2500 kilograms of anchovy species, and an average of 51 kilograms of acre. The total output value is 511,840 yuan, the per mu output value is 10,446 yuan, and the mu benefit is 2,473 yuan.
A total of 49 acres of micropore aerators are laid, and there are two south and north ponds, of which 20.5 mu are in Nantangkou and 28.5 mu in Beitangkou. The water quality is fresh, pollution-free, the water inlet and drainage systems are separated, and there are no large trees and buildings around. Near the highway about 50 meters, easy to transport. Two main pipelines are laid on the road between the north and the south of Tangkou, with a total length of 220 meters. There are 14 or 16 micro-pore pipelines laid at the north and south Tongkou. The total length is 4,500 meters. The distance between the branch pipelines is 8 meters. The bottom 15 cm. And equipped with a 4.5 kW blower.
Timely stocking and strengthening management 2.5 million tailed prawn, Macrobrachium rosenbergii, which stocked 4000 pigs per kilogram on May 12, was developed by Jin Xiaolong in a greenhouse. On June 22, 50,000 summer fish were stocked. The daily feeding rate of Macrobrachium rosenbergii is about 5%, and it is fed 2 to 3 times a day. It is mainly composed of specialized feed for Macrobrachium rosenbergii and supplemented with animal feed such as snails and quail meat. Pay attention to the cultivation of natural feed, apply fertilizer in time, apply 1 fermented organic fertilizer every 20 days, and use 100 kg/mu. Strengthen water quality management, keep the pool water-soluble oxygen content above 5 mg/l, pH value 7.2-8.0, and pool water transparency 30-40 cm. Regularly sprinkling EM bacteria, spilled once a week in July, August and September. Spill 1 lime mortar 1 month, quick lime dosage 5~10 kg/mu, EM bacteria and quick lime use time interval more than 5 days.
Timely fishing, significant benefits After the juvenile shrimp enters the pond for one month, it adopts a round-fishing method. The shrimps with a body length of more than 7 cm are harvested and listed, and they are usually harvested once every 10 days.
The proper use of micro-aeration technology has maintained good water quality in both ponds. Although the stocking density of Macrobrachium rosenbergii has increased significantly, no disease has occurred during the whole breeding period. This technique is worth promoting.
Foam Tipped Swab,Black Stick Foam Swab ,Tipped Cleanroom Swabs ,Head Foam Tip Swab
Hunan Kangfutai Medical Devices Co., Ltd. , https://www.3kfut.com