Matters needing attention in aquaculture in autumn

The important season for fish growth, fattening and harvest in autumn is the most critical period in aquaculture aquaculture management, when a year of hard work may go down the drain with a little mismanagement. So what should aquaculture pay attention to in autumn? Come and have a look with the editor.

1. Strengthen the control of water quality

First of all, it is necessary to change the water in time, a small amount of water for many times, and absorb the middle and upper water to increase the species of plankton, prevent and reduce the growth of blue-green algae to form "blue starch water", and culture ponds should be sprinkled with quicklime every half a month to increase the calcium quality of the water. generally use about 10 kilograms per mu. In addition, Bacillus, photosynthetic bacteria, nitrifying bacteria and other microbial agents should be used to control water quality to reduce nitrite, hydrogen sulfide and high pH value. In addition, for ponds equipped with aerators, the aerator should be opened timely and reasonably according to the weather and the activities of farmed species, so as to increase the dissolved oxygen in the water and promote the appetite and disease resistance of aquatic products.

2. Scientific input

The water temperature in the early autumn is moderate, which is the second peak period of fish growth. At this time, feeding should follow the four principles of timing, positioning, quality and quantity. Feeding should be flexibly mastered according to the weather, water quality and fish intake, and the feed must have comprehensive nutrition and good palatability. at the same time, it is necessary to ensure that the feed is fresh and should not be fed with moldy and rotten feed, so as to ensure that the fish are well fed without causing waste, so as to avoid water pollution. At the same time, reasonable feeding should be given according to the feeding habits and nutritional needs of different fish, and the daily feeding amount should be 3% and 4% of the body weight of pond fish.

3. Disease control

Diseases are very easy to occur in autumn, so disinfectants should be sprinkled in the whole pool every 20 days or so, and garlic and salt should be added to the feed to prevent and control bacterial diseases of fish. At the same time, it is necessary to do a good job in patrolling the ponds every morning and evening, check the activities and houses of aquatic products, and check the water quality regularly if possible, while for river crabs and other easily escaping breeds, pay attention to check whether there are loopholes in the anti-escape settings and the ridges of the ponds, and at the same time put them on the market by rotation.

The above is the introduction of autumn aquaculture precautions, hope to help you, want to know more related knowledge, please follow us.