How to prevent the development of small green crab?

(1) To prevent excessive accumulated temperature, artificial breeding crabs should be kept as close to natural crabs as possible, and should not be earlier than May as early as possible; increase the depth of crab pools. In summer and autumn, the depth of crab pools should be maintained at 1.2 to 1.5 meters. To prevent the water temperature from being too high; submerged plants are planted in the pool of crabs to reduce the pond water temperature.
(2) To prevent excess nutrients from increasing the stocking density of the young crabs, and increasing the stocking density of Phase III crabs from 10,000 to 20,000/mu to 50,000 to 80,000/mu; In the early period of juvenile crab feeding, some animal diets and concentrate feeds can be fed to prevent lazy crabs from being produced. In the middle and late stages, plant bait should be used as the main ingredient. If medium-term juvenile crabs are found to grow too fast, they should be given less or not even fodder. The juvenile crabs should use the aquatic plants planted in the pond to feed on them; control the number of water additions, and generally add water once every half-month during the feeding period.
(3) Poor environmental conditions, high salinity, freshwater, salt water drainage, improved pond water quality, changes in the management of crab species, salt-alkali ponds for the sale of Phase III crabs, and cultivation of first-instar crabs as supplements.

What is a TSA customs lock?

Customs TSA lock means that US Customs transit cargo and baggage transport customs cargo safety testing, the need to ensure universal TSA baggage security and the use of international customs GSM dedicated key.

Why use TSA customs lock?

Starting in January 2003, TSA requires all airport baggage entering the United States must be opened for inspection, but TSA issued a warning: unless TSA certified locks, or do not otherwise be checked baggage unlocked or destroyed by customs have the right to pry check luggage locks.

Benefits Customs TSA lock?

Check how TSA lock Customs: Customs inspector has a TSA lock key hand, be very careful when you open the baggage inspection to ensure safety, but also to re-lock after checking luggage.

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