Can I keep lobster in lotus root pond? How's the profit? What are the methods of raising crayfish in lotus root pond and matters needing attention?

In recent years, with the instability of the market of other farmed species, crayfish as a mass consumption has performed better, the price has been more stable, and the income is also better. At present, crayfish farmers everywhere are also exploring new farming models, so can lobster be raised in lotus root ponds? How's the profit? What are the methods of raising crayfish in lotus root pond and matters needing attention?

Can you raise lobster in the lotus root pond? How about the income of raising crayfish in lotus root pond?

Lobster can be raised in lotus root ponds. For example, a farmer in Lingcheng District, Dezhou, Shandong Province, has explored the culture model of crayfish in lotus root ponds in the past two years, which has been successful. Try to raise crayfish in 30 mu lotus root pond, yield 300 jin crayfish per mu, the average sales price is 18 yuan; three-dimensional ecological culture harvest less lotus root disease, improve the quality and price, the market is good and the benefit is considerable.

This culture model does not require high pond conditions, and generally fish lotus root ponds can be used as culture ponds. It is necessary to clear the pond and disinfect the pond before stocking, and plant aquatic plants. At the beginning of April, about 6000 shrimp seedlings can be released per mu, which can be fed to Xihu pumpkin rattan seedlings and fruits, potatoes, corn feed, etc., with emphasis on water quality and water level adjustment, maintenance of aquatic plants, prevention and control of diseases and insect pests and the use of catching the big and leaving the small out of the pond.

Second, what are the methods and points for attention of raising crayfish in lotus root ponds?

Culture of crayfish in lotus root pond-- pond condition

1. Pond preparation

Choose Laotangkou, where the mud is thicker, so that the pond is rich in organic matter, which is not only suitable for planting lotus roots, but also produces tender and crisp lotus roots with good taste. A circular shrimp culture ditch with a width of 120 cm, a width of 90 cm and a depth of 80 cm is excavated around the pond, and a "ten"-shaped inter-pond ditch should be excavated in the middle of the pond, which should be connected with the surrounding ditch and pond. Its total area should account for about 10% of the total area of the pond. Diagonally set the inlet and drain, and seal it with 60-purpose stainless steel mesh. Around the pond, a 60 cm high calcium plastic board is used as a fence facility. The calcium plastic board is buried in the soil for 10 cm to 15 cm, and a stick is erected every 80 cm to fix the calcium plastic board to ensure that the crayfish do not escape.

two。 Fertilizer application

Before planting lotus root, it is best to apply organic fertilizer, which accounts for more than 60% of the annual amount. 50 kg of high-quality compound fertilizer is applied per mu in June, 50 kg of urea per mu in July, and 30 kg / mu of urea can be applied when lotus leaves basically cover the pond surface. Ensure adequate fertilizer for lotus root, and be careful not to burn lotus leaves when fertilizing.

Cultivation of Crayfish in Lotus Pond-- planting and Management of Lotus Root

1. Lotus root seed selection

It is better to choose the whole lotus root with 3-4 nodes, which requires high-quality varieties such as complete branches, complete terminal buds, sturdy lotus roots, tender buds, no damage, no diseases and insect pests.

two。 Lotus root planting

Before and after the Qingming Festival or Grain Rain, when the water temperature in the outer pond was kept at 12 ℃, lotus root could be planted in the whole pond with 600 trees per mu and 700 trees per mu. Put the lotus root seed horizontally into the mud, the depth is about 10 cm, and the tail section is slightly warped upward (5 cm into the mud). Soak the lotus root seeds with carbendazim for 30 minutes.

3. Water level regulation

The water level management principle of lotus root pond is shallow, deep and shallow. From the shallow water level of 10 cm, the water level gradually enters the water with the increase of temperature, and the water level increases to 20 cm. The water depth should be adjusted reasonably to facilitate the normal photosynthesis and growth of lotus root. The water level reached 1.2 to 1.5 meters in June. After the weather turns cool, gradually lower the water level, from the middle of September to the end of October, keep the water depth 30 cm, keep the shallow water 5 cm or the soil moist during the overwintering. During the breeding period, the water temperature can enter and drain flexibly according to the climate.

4. Lotus root picking

After the lotus root terminating leaf appears, the back of the terminating leaf is reddish, and the edge of the base standing leaf begins to wither and yellow, which proves that the lotus root is mature and should be picked in time according to the market demand. It is generally implemented to pick lotus root in order to set aside a kind of lotus root.

Stocking and management of crayfish seedlings in lotus root ponds

1. Release snails

The addition of snails can not only supplement animal bait for crayfish, but also play a role in purifying substrate. At the beginning of the year, 250 kg / mu of live snails were put into use to let them reproduce naturally and provide some palatable bait for crayfish.

two。 Put in shrimp species

To prevent inbreeding, male and female shrimps from different places were selected and released on August 16, 2016. the specification was 20 ∶ / kg, the female-to-male ratio was 3 kg / kg, and the density was 24 kg / mu.

3. Feed feeding

As the natural bait in the lotus root pond is relatively abundant, there is generally no need to feed crayfish after putting it into the lotus root pond. The appropriate feeding amount can be fed part of the compound feed according to the richness of the natural bait in the lotus root pond. The bait feeding points are mainly shallow water level, crayfish concentration areas, etc., and the feeding amount should be determined according to the situation of leftover bait and weather. The general principle is "less in the beginning, more in the middle, less in the later stage".

4. Prevention and control of shrimp disease

Adhere to the principle of "giving priority to prevention and combining prevention with prevention". About 3% salt water is used to soak the shrimp for 3-5 minutes before release. During the growth of crayfish, 10 kilograms of quicklime is used every 15 to 20 days, and then sprinkled throughout the pond to prevent diseases.

5. Crayfish fishing

Crayfish began to be caught gradually from March to April, and shrimp cages with mesh of more than 2 cm can be put into circular ditches every evening. The method of catching large ones and leaving small ones, and gradually listing them on the market is adopted. The lotus root has just grown leaflets at the beginning of May, and all the crayfish are completely caught when the lotus root begins to grow normally, which will not affect the growth of the lotus root.

Raising crayfish in lotus root ponds-fishing and marketing

Mid-March, late March to early May is the fishing and sales season for crayfish, when the price is relatively high before a large number of crayfish are on the market, while lotus roots are sold in large quantities during the Mid-Autumn Festival and Spring Festival, so that breeding and sales are staggered. Better economic benefits can be achieved.