I, water plants management

Water plants play an important role in river crab culture. Recently, when there are water plants floating on the water surface in the pond, they should be fished out in time so as to avoid the accident of rotting grass affecting the water quality. If the planted Erythrina, the water temperature is lowered will begin to sprout growth, generally do not need to take care of, if the planted Verticillium, you can stop eating 1-2 days to let the crab eat a part of the water plants or fished out, or in the second half of October after the water temperature is lowered there will be a rotting grass phenomenon, the water plants rot will make the water nitrite greatly elevated, easy to trigger the river crab trembling and other symptoms, when the seriousness of the phenomenon of death of the batch. has the characteristics of rooting and stemming, decontaminating and rejuvenating, promoting the growth of water plants and stabilizing the water quality at the same time, and has been successfully applied in many places of river crab culture.

Second, water quality management

Nitrite, ammonia nitrogen, hydrogen sulfide and other excessive standards will lead to river crab poisoning symptoms. In order to prevent the occurrence of this phenomenon, this period of time farmers should do a good job of preventing the decay of water plants, reduce feed residues, strengthen the biological bottom, etc., the use of scientific and effective detoxification measures, to create a good ecological environment of river crabs is a farmer should pay attention to the problem.

Many farmers will use to adjust the water quality, it can complex the heavy metal toxins, residual chlorine and pesticide residues in the water, inhibit the generation of ammonia nitrogen, nitrite and other harmful substances, and repair the poor water; in addition, it is rich in nutrients such as peptide can also reduce the external environmental changes on the river crab stress injury.

Three, feeding management

Currently the most important thing is still to do a good job of substrate management, because although the high temperature has passed, but the sweltering days will still appear, the substrate is not good easy to trigger poisoning of river crabs, the crab can be postponed to the sale of good health, the poor quality of the ponds should be listed as soon as possible.

Feed feeding should also be done well. Recently, it is the fattening stage, not only to supplement the necessary nutrients, but also to focus on improving the physical condition of river crabs. Feeding should be done in moderation so as not to overfeed and affect the bottom and water quality. Nowadays, more and more farmers are applying Starling, which can accelerate the feeding speed, stabilize the substrate, and reduce the residual bait; in addition, Starling also has the beneficial effects of protecting the liver and gallbladder, and enhancing the intestinal immunity, which can escort the success of river crabs.

Water quality and environment, feed feeding, aquatic plant management and other factors are directly related to the success of river crab culture, despite the challenges, we firmly believe that as long as we can master the scientific and effective management measures, and dare to pay, perseverance, we will eventually achieve the final harvest.