After the crabs have undergone multiple reproductive shells, the volume has basically been established after 10 months. In November, the main goal is to increase the fullness of the crabs, increase the weight, and improve the sense of crab meat. Practice has shown that the female crabs can be increased by strengthening cultivation. Content and taste, crab can accumulate crab paste. Therefore, focusing on this center, we must focus on four points:
First, feed feeding
This month can appropriately reduce the proportion of animal feed feeding, can be reduced to 50-60%, increase the proportion of baiting feeds such as hawthorn, corn, wheat, pumpkin, etc., in particular, to increase the feeding of soybeans, promote fertilizer and fresh.
Second, water level, water quality
This month the water level is controlled at 1-1.2 meters, the transparency is 30-40 centimeters, the PH value is 7.0-8.5, and the ammonia nitrogen and nitrite are lower than 0.1 milligrams per liter. You can use "Denitrification detoxification treasure" and "Nitrite elimination" to match. Use “probiotics refreshing†and “beneficial living water†to degrade organic matter and ammonia nitrogen in the pool water.
Third, the water body oxygen
After the crabs mature into the month of November, their activities are frequent, the water body is turbid, the plants are few, the self-purification capacity of the pond is reduced, and the low feeding amount is relatively large, which easily causes the lack of oxygen in the water body. Therefore, we must appropriately increase the amount of oxygen in the pool water this month, and conditional increase the time for opening the aerator. There is no oxygen equipment. According to weather and crab activities. Use "granule oxygen" and "emergency oxygen" to increase oxygen.
Fourth, do a good job of preventing fleeing and stealing work
"Autumn winds, crab legs itch." It is easy to escape and easy to steal. Therefore, it is necessary to strengthen the work of the patrol pond and check whether the anti-escape facilities are in good condition and whether there are any biological harms that are harmful to the enemy.
The so-called pharmaceutical intermediates are actually some chemical raw materials or chemical products used in the pharmaceutical synthesis process. This chemical product does not require a production license for medicines, and can be produced in ordinary chemical plants. As long as it reaches a certain level, it can be used for the synthesis of medicines.
Explanation: Some chemicals used in drug synthesis
Purpose: Synthesis of medicines
Features: low profitability of production intermediates
Representative: fluorine-containing pyridines, etc.
Field: Medicine
Anti-Influenza Drugs,Api Oseltamivir Phosphate,Intermediate For Oseltamivir Phosphate,Vortioxetine Hydrobromide Intermediate
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