In the fall, the gonadal gonads begin to mature and are ready for annual reproductive migration. At this time, river crabs, such as lakes, reservoirs and river ditch, should be caught in time to avoid the loss of crabs.
First, the fishing time to determine the appropriate crab time is a key to improving the efficiency of crabs, neither too early nor too late. Prematurely affecting the growth of crabs is not conducive to the improvement of yield; too late, after sexual maturity, crabs will escape and cause losses. Appropriate fishing time should be taken into consideration from the sources of crabs, stocking specifications and temperature conditions. In general, river crabs in the Yangtze River system can be harvested before and after the annual autumn season; the river crabs in the Liaohe River system can be appropriately advanced. The specific fishing time should be after the crab's last reproductive pod. Into the fall, we should always observe the crab growth and clam shell, and found that most crabs can be caught 10 to 15 days after the clam shell. At this time, the crab shell is dark in color and has good constitution and will not die. It is resistant to manual operation.
Second, fishing methods There are many ways to catch crabs, which can be used to cast nets, screens and other tools to fish, but also to cages, rivers, etc. to capture. Before the operation, the debris at the fishing site is usually removed, the aquatic grasses are removed, the appropriate space for crab activities is reserved, and then the nets are set up at night to be caught at night. Precisely placing bait lures in the workplace or in the nets will have a better fishing effect. After a period of fishing, artificially trying to use micro-fluid water stimulation, the crab sensitivity increased, activities were intense and were captured. For the same body of water, a variety of methods can be used for comprehensive catching, which can make the crab catch clean and thorough.
Third, there are two ways to deal with the mature crabs caught after catching: First, timely sales; Sales of crabs should be categorized according to their size, and prices should be assessed on the basis of quality. Temporarily raised crabs should be removed from wounded crabs, crabs, weak crabs, and dead crabs. Individuals with assorted specifications, complete limbs, blue backs, white backs, and disease-free health should be selected as far as possible. After being sterilized, they are then placed in pre-prepared holding pools for fattening and breeding to improve the quality. When the price is appropriate, they are sold for sale.
First, the fishing time to determine the appropriate crab time is a key to improving the efficiency of crabs, neither too early nor too late. Prematurely affecting the growth of crabs is not conducive to the improvement of yield; too late, after sexual maturity, crabs will escape and cause losses. Appropriate fishing time should be taken into consideration from the sources of crabs, stocking specifications and temperature conditions. In general, river crabs in the Yangtze River system can be harvested before and after the annual autumn season; the river crabs in the Liaohe River system can be appropriately advanced. The specific fishing time should be after the crab's last reproductive pod. Into the fall, we should always observe the crab growth and clam shell, and found that most crabs can be caught 10 to 15 days after the clam shell. At this time, the crab shell is dark in color and has good constitution and will not die. It is resistant to manual operation.
Second, fishing methods There are many ways to catch crabs, which can be used to cast nets, screens and other tools to fish, but also to cages, rivers, etc. to capture. Before the operation, the debris at the fishing site is usually removed, the aquatic grasses are removed, the appropriate space for crab activities is reserved, and then the nets are set up at night to be caught at night. Precisely placing bait lures in the workplace or in the nets will have a better fishing effect. After a period of fishing, artificially trying to use micro-fluid water stimulation, the crab sensitivity increased, activities were intense and were captured. For the same body of water, a variety of methods can be used for comprehensive catching, which can make the crab catch clean and thorough.
Third, there are two ways to deal with the mature crabs caught after catching: First, timely sales; Sales of crabs should be categorized according to their size, and prices should be assessed on the basis of quality. Temporarily raised crabs should be removed from wounded crabs, crabs, weak crabs, and dead crabs. Individuals with assorted specifications, complete limbs, blue backs, white backs, and disease-free health should be selected as far as possible. After being sterilized, they are then placed in pre-prepared holding pools for fattening and breeding to improve the quality. When the price is appropriate, they are sold for sale.