In the middle or in the middle of a paddy field, trenches with a depth of 0.5m and a width of 0.4m will be excavated to form a "well" or "well" shape. Heightening and widening are required for the field ridge to prevent the shrimp from escaping. Set up a wooden gauze window. In the aquaculture ditch, water tree techniques, leaves, etc. should be placed to prevent natural enemies from invading.
A. Field disinfection Before fielding shrimp, the plots should be disinfected first. About 30 kg of lime should be used per acre. After being dissolved, they should be sprayed in the fields to eliminate pests such as astragalus, leech, and leeches.
B. After the shrimps are transplanted into the rice paddy fields, hatching young shrimps or individual larger sexually mature green shrimps are collected from the shallow waters of lakes, river courses, reservoirs or ponds, and the breeding ditch of the rice paddy field is put into Mu can be put in 3 to 4 kg, in order to prevent the shrimp from swallowing the young shrimp, it is also possible to set a net fence in the culture ditch, and put the shrimp into the net so that the hatched larvae will be automatically removed from the net. Drill it out to avoid eating shrimp. The top of the net should pay attention to prevent the species of shrimp from entering the field. The species of green prawns hatch for about 7 to 20 days. During this period, appropriate feeds such as small pieces of fish fillet and pork liver are used to promote the propagation of shrimp. After the hatching of all species of shrimp is completed, the species of shrimp can be used as food.
C. The development of young shrimps with slow development of bait, rice bran, bean cakes, vegetable cakes, wine troughs, coriander, silkworm cocoons, snails and other crushed shrimp can be used as young bait. After the first day of the evening feeding along the ditch, the daily feeding amount is 3% to 4% of the amount of shrimp; when the young shrimp is grown to adult shrimp, the feed of quail meat, quail meat, cockroach and silkworm cocoon can be put into use. Promote the growth of juvenile shrimp.
D. Water Quality Management Rice paddy raises green prawn. Water quality management is very important. Pesticide contamination and oxygen deficiency should be prevented. Stocking density should not be too high, algae feed should not be voted too much to prevent field water hypoxia. In the event of hypoxia, fresh water should be added immediately to increase oxygen in the field. During periods of high temperatures, fresh water is added 3 to 5 days. Do not spray and apply fertilizer on rainy days. Normally, in the night before spraying, fertilize the shrimp into the shrimp pit at the inlet, and cut off the water supply. Before the second day, spray and fertilize.
E. Timely fishing When young larvae reach the supply scale, they should be caught immediately. The fishing time is best to be controlled after the spawning of the prawn is completed. Within a period of time before natural death, a body length of 3-4 cm is appropriate, and Leave part as a breeding shrimp for the following year.
A. Field disinfection Before fielding shrimp, the plots should be disinfected first. About 30 kg of lime should be used per acre. After being dissolved, they should be sprayed in the fields to eliminate pests such as astragalus, leech, and leeches.
B. After the shrimps are transplanted into the rice paddy fields, hatching young shrimps or individual larger sexually mature green shrimps are collected from the shallow waters of lakes, river courses, reservoirs or ponds, and the breeding ditch of the rice paddy field is put into Mu can be put in 3 to 4 kg, in order to prevent the shrimp from swallowing the young shrimp, it is also possible to set a net fence in the culture ditch, and put the shrimp into the net so that the hatched larvae will be automatically removed from the net. Drill it out to avoid eating shrimp. The top of the net should pay attention to prevent the species of shrimp from entering the field. The species of green prawns hatch for about 7 to 20 days. During this period, appropriate feeds such as small pieces of fish fillet and pork liver are used to promote the propagation of shrimp. After the hatching of all species of shrimp is completed, the species of shrimp can be used as food.
C. The development of young shrimps with slow development of bait, rice bran, bean cakes, vegetable cakes, wine troughs, coriander, silkworm cocoons, snails and other crushed shrimp can be used as young bait. After the first day of the evening feeding along the ditch, the daily feeding amount is 3% to 4% of the amount of shrimp; when the young shrimp is grown to adult shrimp, the feed of quail meat, quail meat, cockroach and silkworm cocoon can be put into use. Promote the growth of juvenile shrimp.
D. Water Quality Management Rice paddy raises green prawn. Water quality management is very important. Pesticide contamination and oxygen deficiency should be prevented. Stocking density should not be too high, algae feed should not be voted too much to prevent field water hypoxia. In the event of hypoxia, fresh water should be added immediately to increase oxygen in the field. During periods of high temperatures, fresh water is added 3 to 5 days. Do not spray and apply fertilizer on rainy days. Normally, in the night before spraying, fertilize the shrimp into the shrimp pit at the inlet, and cut off the water supply. Before the second day, spray and fertilize.
E. Timely fishing When young larvae reach the supply scale, they should be caught immediately. The fishing time is best to be controlled after the spawning of the prawn is completed. Within a period of time before natural death, a body length of 3-4 cm is appropriate, and Leave part as a breeding shrimp for the following year.
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