CATDOLL : CATDOLL: Why won't my crab claws bloom? They're starting to bloom, but they're drying up in a few days! Can any experts give me some advice? Thanks.

1. Why won't my crab claws bloom? They are budding and then dry up in a few days! Can any expert give me some advice? Thank you.

If it lacks light and fertilizer, place it in a bright and ventilated place on the balcony. Water it when the soil is dry. Don't water it if the soil is not dry. It doesn't matter if the soil is a little dry. Be afraid of waterlogging and freezing. Pay attention to insulation in winter. Go to the flower shop and buy a bottle of plant growth and flowering nutrient solution. Add some nutrient solution every time you water it, and the plant will grow better and more vigorously and can bloom.

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2. How to raise crabs that you can’t finish eating

Some people think that crabs grow in water, so they should keep them in water when they take them home. In fact, the water at home is stagnant and lacks oxygen, which can easily suffocate the crabs.

"When the autumn wind blows, the crab's feet itch." Due to the influence of typhoon rainfall in the past two days, the weather in Nanjing has turned cooler, and the most popular delicacy of this season, crab, has also entered its best eating period.

Prices rise slightly during typhoons

"We can sell dozens of these gift boxes of four pairs a day, and business is much better than in September." The owner of a Gucheng Lake crab store told reporters that during the National Day holiday, many citizens gave crabs as gifts or ate them themselves, and crabs entered their peak sales season.

Affected by this round of market conditions, the price of crabs has risen slightly, but since there are not many large-sized crabs at present, the prices of female crabs weighing more than 3 taels and male crabs weighing more than 4 taels have fluctuated greatly. The fluctuations of other small-sized crabs are not obvious, with an increase of about 5 yuan per catty. Currently, the main types of crabs on the market are Gaochun crabs and Xinghua crabs.

However, industry insiders analyzed that the weather is relatively hot this year, and most crab farmers' crabs are not growing very well. As the weather cools down in the next two days, the crabs will grow longer and the meat will become tighter, thus entering the best period for eating crabs. Especially the current male crabs have loose meat and are not plump, so the price difference between male and female crabs of the same size is very large. During the festival, the wholesale prices of crabs are: 2-2.4 taels, 50 yuan/jin for females and 15 yuan/jin for males; 2.5-2.9 taels, 58 yuan/jin for females and 18 yuan/catties for males; 3-3.4 taels, 118 yuan/jin for females and 26 yuan/jin for males.

Crabs can be stored in the refrigerator

As we all know, the fresher the crab, the better it tastes. But if you can't finish all the crabs that your friends and relatives send you at once, how should you store them?

The reporter asked the crab farmers about this. "Some people think that crabs grow in water, so they should be kept in water when they are taken home. In fact, the water at home is stagnant and lacks oxygen, which can easily suffocate the crabs. A better way is to tie up the crab's legs to reduce the crab's physical consumption, then cover it with a wet towel and put it in the refrigerator. 3-6℃ is the best, but don't keep it for too long, because the longer it is, the more the crab consumes and the taste is not plump enough."

Since crabs are easy to die, many people will steam and cook all the river crabs they buy at home at once. How to preserve such cooked crabs? It is recommended to cover them with plastic wrap first and place them in a cool and ventilated place to keep them fresh for 6-8 hours. If the weather is hot, it is best to put them in the refrigerator so that the crabs at noon can be kept until the evening, but not overnight. If you want to store cooked crabs for a long time, such as overnight, you have to put the crabs in the freezer. However, direct freezing can easily cause the cooked crabs to lose moisture and become very dry and unpalatable. When freezing, you can freeze them together with the soup used to cook the crabs to maintain the freshness of the crabs.

How to keep crabs fresh? How to preserve leftover crabs? Here’s a tip for you!

3. I want to ask for advice. I have kept the crab for more than a year without molting. Now it has a...

This thing is from the south, Fujian, Guangdong, Vietnam and Singapore. If you don't mind the trouble, you can put sand. If you think it's troublesome to clean up, then put 2CM of water and a stone above the water. Remember that no matter what kind of crab, they are masters of escaping, so they need to be covered. Food, vegetables, small fish, fruits, etc. are all fine.

4. Can crabs survive in fresh water?

The breeding technology of blue crab

Source: This site compiled Author: China Aquaculture Network February 25, 2007

Can pond cage farming be successful? Why did crabs die in large numbers during fattening this year?

The pond hanging cage culture of blue crabs can be successful. The key points of the technology of hanging blue crabs in the breeding pond are as follows:

1. Seawater aquaculture pond conditions: convenient water inlet and outlet, fresh and unpolluted seawater, pH value between 7.8 and 8.5, preferably sandy or silty bottom, and no mud.

2. Water intake in seawater aquaculture ponds: drain the pond water and expose it to the sun. Use 50-60 kg of quicklime per mu to clean the pond 15 days before stocking to kill harmful fish and harmful microorganisms and improve the bottom quality of the aquaculture pond. Use 10ppm tea seed cake to further clean the pond 4-5 days before stocking to completely remove miscellaneous fish and fish eggs, and then use a 60-mesh water inlet net to filter the water to a 60-cm water level, apply fertilizer appropriately, and cultivate the pond water. Then stock seawater aquaculture species such as shrimp, white shrimp, mullet, sea bass, mudskipper, mantis shrimp, etc. to make full use of the seawater aquaculture pond.

3. Intermediate cultivation of blue crab seedlings: The blue crab seedlings purchased by farmers must be placed in small ponds or cages for intermediate cultivation. The feed is mainly Artemia, copepods and surimi. The daily feeding amount starts with 100-200% of the weight of the blue crab seedlings. After that, the daily feeding amount gradually decreases as a percentage of the blue crab seedlings' weight, but the daily feeding amount gradually increases. Therefore, the principle of feeding should be that there should be no leftover feed overnight, and feed 1-2 times a day. After 15-30 days of cultivation, the blue crab carapace can grow to 4-5 cm, which is the standard for cage culture.

4. Wire-hanging technology: Use thick iron wire to hang parallel wires in the seawater culture pond, fix both ends, and hang one wire every 1.5-2 meters. In the gap, you can use a boat to manage the blue crabs. Take a cage frame with a diameter of 35-50 cm. The cage frame should be a plastic frame with thick walls and an opening at the top. The diameter of the traction net is 15 cm, and it is made of thin iron wire for feeding. Then fix the opening of the stretching net circle on the wire, hang 2 cage frames per meter on average, and the wire should be at least 30 cm above the water level of the pond. According to the water conditions of the pond, 500-1000 can be caged per mu. In each cage, a blue crab with a shell width of about 4-5 cm is placed.

5. Breeding management: The ideal bait for caged blue crabs is live shellfish and snails. Blue crabs can crush shellfish and snails with their claws and eat them. The remaining live bait will not spoil the water quality. The amount of food fed at one time is enough for 3-5 days. Feed more appropriately. When using dead animal bait, the amount of food must be controlled to prevent the water quality from being spoiled. Water quality management mainly determines the water inlet and outlet based on the transparency of the pool water. In particular, the amount of water replacement should be increased during the high temperature period in summer to ensure that the pool water is fresh and has sufficient dissolved oxygen.

6. Mating and fattening: When blue crabs grow to be more than 250 grams each, it is the mating period in autumn. Release the caged blue crabs into the breeding pond to allow them to mate and ensure the supply of bait to increase the crab roe and fatness, improve the quality of the blue crabs, and obtain a higher selling price.

7. Harvest: After mating and fattening for 15-30 days, the crabs are caught and sold at the appropriate time according to the climate and market conditions. 2. We have not received the investigation report on the cause of death of crabs this year. The main reasons may be caused by water environment factors, including rapid changes in water temperature and salinity, or low dissolved oxygen concentration, or excessive parasites and other pathogens, or excessive accumulation of ammonia nitrogen, nitrite, etc. In short, these biological, chemical, and physical conditions may cause the death of crabs.