Second, water quality management. The water level behind the shrimp ponds should not be too shallow, the water level should be kept above 60 cm, and new water should be added every 7-10 days. Pools of lean water pile up 200-400 kilograms of fermented organic fertilizer. If the pond water is more fat, apply 5-7.5 kg of inorganic fertilizer per acre after the temperature rises. Suitable aquatic plants are transplanted in the pond, accounting for about 30% of the total area. Third, feed feeding. When the water temperature rises above 18°C ​​feed the feed in time. Start feeding once a day, and gradually transition to the morning and afternoon, and feed the rice bran, wheat bran, bean cake mixed feed or full-strength prawns pellet feed, and add animal feed such as small trash fish and fish meal. The amount of feed accounts for 3-6% of the pond's weight. According to the daily diet of shrimp, adjust the amount of feeding. Fourth, prevent diseases. In mid-March, bleaching powder and active iodine soluble water are sprayed once to prevent bacteria infection caused by bumps. In the case of ciliate disease, parasites are first killed with "Fibrinella Net" and then once every 5-7 days. Fifth, prevent floating heads. Pay close attention to changes in weather and water quality, not blindly use drugs, pay attention to adding new water frequently, and do a good job of preventing floating heads. In shrimp ponds with high stocking densities, aerators should be activated at noon for 1-2 hours to increase dissolved oxygen in the water to prevent shrimp death due to lack of oxygen floating heads. BEST QUALITY,SUITABLE FOR BULDING Construction & Decoration,Fiberglass Mesh,Fiberglass Window Screen,Fiberglass Window Wire Mesh COFCO HEBEI INTERNATIONAL TRADING CO., LTD. , https://www.cofcohb.com
Spring shrimp culture
First, timely education. When the temperature of the water rises above 20°C, the shrimp begin to peck, and the shrimp body is susceptible to bruising. Before the stocking, do a good job of drying the pond, and use bleaching powder, active iodine and other drugs to quickly disinfect the moss, green algae, blue-green algae pond with copper sulfate to spray the whole pool once. The stocking rate per acre depends on the size of the shrimp, generally controlled at 10-20 kg.