How much is the crayfish per jin now? Can you still eat the dead? What kind of water plants should be put in?

Crayfish is a common kind of shrimp in China, which is deeply loved by people because of its various practices and high nutritional value. at present, many areas like to make it into a special snack, how much is the crayfish per jin? Can you still eat the dead? What kind of water plants should be put in?

The latest market price:

Spring and summer is the season when crayfish are on the market, and there are all kinds of prices. On the midnight snack menu, the price of crayfish is more than ten yuan higher than last year. Last year, the price of crayfish restaurant was 49 yuan, while this year, the cheapest one is 68 yuan, which is about one jin for two. If there are too many people or especially like spicy food, the recommended ones for three or four people are 88 yuan and 108 yuan each. The price of crayfish in the vegetable market is 30-45 yuan, and all of a sudden, crayfish feel unaffordable.

Can I eat when I'm dead?

You can't eat crayfish if you're dead. Crayfish is not very clean and sanitary, the body surface and body contain dirt, parasites and fungi, and crayfish is a high-protein food, the summer weather is hot, this high-protein food is prone to spoilage, so dead crayfish must not be eaten.

The harm of eating dead crayfish

1. Food poisoning

Lobster is a high-protein food, the summer weather is hot, the food is easy to rot, high-protein food can begin to rot after two hours at room temperature, crayfish contain more parasites and fungi, decay faster, postmortem crayfish, protein denaturation, with peculiar smell and toxicity, eating can cause food poisoning. Diarrhea, abdominal pain and other symptoms.

2. Heavy metal poisoning crayfish living environment and food contain certain heavy metals, because crayfish has enrichment, its head contains more heavy metals, it can inhibit the diffusion of heavy metals when alive, after its death, heavy metals will slowly spread to the meat of crayfish, the consumption of this crayfish will increase the risk of heavy metal poisoning.

Available aquatic plants and their advantages and disadvantages:

1. Lantern grass (black grass)

Advantages:

1. Strong ability to purify water.

2. Like high temperature.

3. It is not easy to lack oxygen.

Disadvantages:

1, the young grass is easy to be destroyed, there are a large number of lobster grass, or even there is no grass, to remedy the difficulties.

2. It is difficult to manage. It is necessary to apply fertilizer regularly, control weeds and prevent insect pests.

3. There is a high demand for water quality. Once the transparency of the water body is low, it will be very difficult for the aquatic plants to grow or even die.

4. it is difficult to plant in ponds where the sediment is aged or thick, and it is easy to rot or not firmly rooted, which leads to floating.

5. Because of the fast growth and strong ability to absorb fertilizer, it is not conducive to fertilizer and water.

2. Elodea (eating invincible)

Advantages:

1. It is beneficial for crayfish to molt and attach.

2. Fast growth and low temperature growth are beneficial to early batch of shrimp.

3. It can not only take root and grow, but also break away from the soil and float on the water surface with strong vitality.

4. Strong regeneration ability, not easy to be destroyed by lobster, can grow rapidly after high temperature period, and purify water quality.

Disadvantages:

The main results are as follows: 1. The water purification capacity is weak in high temperature period.

2. It is easy to lack oxygen and rot in summer.

3. It is not easy to control the growth area.

Third, millet grass

Advantages:

The main results are as follows: 1. Fast growth and easy management.

2. It is easy to control the area of aquatic plants.

3. The recapture rate of crayfish is higher.

4. It is beneficial to cooling and should not be anoxic.

Disadvantages:

1. Crayfish are not easy to climb, so the bottom plate of lobster is black.

2. The yield of crayfish is low, and the yield of crayfish is low in spring.

Aquatic plants are closely related to the growth of crayfish, and different aquatic plants have different effects on the growth of crayfish. Therefore, farmers in the cultivation of crayfish, the choice of aquatic plants must also be considered, common aquatic plants above have made an analysis of their advantages and disadvantages, they can refer to more oh.