Culture techniques of prawns

More and more people like to go out to enjoy the cool in summer, mostly three or four or five people make an appointment to sit down, and then go straight to the midnight snack stand. This season is the most popular big-headed shrimp, Stir-Fried Shrimps, steamed shrimp, boiled shrimp, basically will choose big-headed shrimp. Although the head is big and the body is small, it has good meat quality and good taste, so it is a good choice. Young people love to drink, and Stir-Fried Shrimps has become the standard for drinking, so the demand for prawns is increasing, and the market demand this year has also greatly increased, resulting in a shortage of supply, so we can consider breeding prawns. This may be a good choice.

Culture techniques of prawns

The culture technology of prawn will vary according to the region, and the culture method will also change. Let's briefly summarize what aspects are included in the culture of prawns:

1. Aquaculture facilities: the suitable area of the pond is 410 mu, the depth is 1mm and 1.5m, and the slope ratio is 1 ∶ 2.5m. The bottom of the pond is flat, the bottom material is loam, the soil quality of the pond slope is hard, the water retention of the pond is good, and the water level is easy to be controlled. The water source is abundant and the water quality is pollution-free. According to the pattern of high irrigation and low discharge, the drainage canal should be built so that it can be irrigated and discharged.

2. Preparation before stocking: thoroughly clear the pond to disinfect shrimp seedlings 20-30 days before stocking, drain the pond water, remove too much silt, renovate the ridge of the pond, use 75 kilograms of quicklime per mu or bleach powder, bleach powder and other drugs, thoroughly clear the pool for disinfection. The rotifer, Cladocera and copepod plankton were cultivated by applying sufficient basic fertilizer and 500kg per mu of rotten livestock and poultry manure to provide palatable bait for shrimp seedlings and shrimp species. Aquatic plants such as hydrilla verticillata, Elaeagnus angustifolia and other aquatic plants were planted in the aquatic plant pond, accounting for 2. 3% of the shrimp pond area. At the same time, set up mesh, or set up bamboo tube, plastic tube and so on.

3. Scientific feeding: do a good job in the combination and feeding of feed according to the nutritional needs of shrimp at the same growth stage. Feed according to the living habits and feeding characteristics of shrimp. Feed reasonably according to the weather, the change of water quality and the feeding of shrimp activities.

4. Daily management: patrol the pool every day and take countermeasures in time when finding abnormalities. Regulate and control the water quality to keep the dissolved oxygen in shrimp ponds above 5 g / L, pH 7-8.5, and transparency about 40 cm. Change the water every 15-20 days, and change the water every 15-20 days. Sprinkle quicklime water every 20 days, with 10 kg of quicklime per mu each time. There are always more aquatic plants to escape from disease prevention in shrimp ponds. Do a good job in disease prevention and elimination.

How to raise water for prawns

To raise shrimp is to raise water, and if the water is clear, the shrimp is disease-free. If the young shrimp grow up a little, they will move to the big pond. in recent years, the water quality of the river around the pond is poor, and shrimp farmers have carefully formulated an efficient and safe "green water plan":

Reasonable adjustment of shrimp culture density, not one-sided pursuit of yield, scientific feeding, strict control of feeding amount, reduction of organic matter that pollutes the water quality of ponds, increase the amount of dissolved oxygen in water, especially in cloudy and rainy days, and improve oxygen enrichment efficiency. Weakening the stress response of prawns caused by climate

The methods of filtration, precipitation and drug disinfection were used to pretreat the water for culture to keep the water quality stable during the culture period.

Maintain the transparency of the pond water, plant floating aquatic plants or aquatic vegetables, absorb nitrogen and phosphorus in the water, and constantly purify the water quality of shrimp ponds. Once shrimp gets sick, there is no cure, and the huge investment of shrimp farmers comes to naught. And clean shrimp live, strong resistance can help its healthy "endure" to the listing season.

"Food safety is guaranteed when eating fresh shrimp." The process of raising shrimp does not use any chemical fertilizers and pesticides, but depends entirely on raising a pool of clear water.

Fishing methods of prawns

Because prawns like to grow in weeds, the bottom of the pond can not be flat, and prawns have the habit of burrowing, therefore, according to the biological characteristics of prawns, the following fishing methods are adopted.

1. Ground cage net fishing: make a ground cage with a net for big-headed shrimp. Each cage is about 20-30 meters long, with 10-20 square squares, with barbs on both sides of each grid at intervals, with a shielding net woven above the cage, and the two ends of the cage are rounded respectively. It is better to have a net in the ground cage. Put the ground cage on the edge of the shrimp pond every morning or afternoon, and put fishy fish, chicken intestines and other things as bait.

In the evening, when the shrimp came out to look for food, it smelled something strange and came after it. It bumped into the cage. There was a net at the top of the cage, so it could not climb up, so it looked for people everywhere and got into the cage. The shrimp in the cage slides deep into the cage and becomes the shrimp in the cage. This fishing method is suitable for wild prawns and prawns with deep pond water.

2. Hand-copied net fishing: put the shrimp net into a square above, leaving a cone-shaped funnel with inverted thorns below, driving continuously with poles along the edge of the shrimp pond or where the grass grows, the shrimp enters the square net, picks up the net, and the shrimp is caught. This fishing method is suitable to be used in places where shrimp are dense.

3. Dry pond capture: drain the water from the pond, and the shrimp will appear at the bottom of the pond and be picked up by hand to catch as much as you can.

Culture cost of prawns

One mu of land only needs to put 120-150 jin of shrimp seedlings, the cost is about 5000 yuan. About 15000 yuan for three mu. Prawns can be planted once and benefit for many years. Five to six years after planting, it is not easy to degenerate, and the young shrimp can continue to spawn and reproduce as species.

The prawns grow fast and the yield is high. The shrimp can be put on the market after about 3 months. The scope of adaptation is very extensive. Ponds, paddy fields, lakes, river branches and marshes can be farmed. The normal sales of farmers are different from wild fishing, and the off-season price is expected to be higher every year at the end of autumn and the beginning of winter.

Using the way of hoarding for out-of-season sales, the annual price of prawns in autumn and winter is between 30 and 50 yuan / kg, and the net profit per mu is between 1.2 yuan and 25000 yuan.

After seeing so much, do you think that the prospect of raising big-headed shrimp is very promising, and the return on investment is very large, and only the first year is the hardest, and you can sit back and watch the benefits in the next few years. Xiaobian shrimp culture is not very realistic, can only rely on everyone to raise shrimp, Xiaobian has become addicted to the mouth.