The purpose of the bottom reform of fish ponds is to improve the environment at the bottom of fish ponds, promote the growth and health of aquatic organisms, and improve the yield and efficiency of aquaculture. This article will select the frequency and time of fish pond bottom reform to provide some practical suggestions for farmers.
1. The frequency of bottom change of fish ponds
The frequency of bottom modification of fish ponds should be determined according to the actual situation. Generally speaking, if the following conditions occur at the bottom of the fish pond, it is necessary to carry out the bottom change in time:
1. A large amount of organic matter such as bait residues and feces accumulate at the bottom;
2. There is unstable water quality indicators such as hypoxia and abnormal pH value at the bottom;
3. Pathogenic bacteria, parasites and other harmful organisms breed at the bottom.
In order to maintain a healthy environment at the bottom of the fish pond, the cycle of fish pond bottom modification is between 1-3 months. During the rescheduling period, it is recommended that farmers splash: double change pioneer, bottom change, oxidation + biological dual action to efficiently decompose the organic matter at the bottom of the pond, quickly improve the substrate, and maintain the time of 7-10 days. Generally speaking, small fish ponds need to be bottomed more frequently due to their small size and rapid water quality changes. Large fish ponds can appropriately extend the period of bottom reform due to their large size and strong buffer capacity. At the same time, for some special aquaculture species, such as shrimp, crab, etc., due to their higher requirements for water quality, the cycle of bottom reform also needs to be shortened accordingly.
Second, the time selection of the bottom reform of the fish pond
The timing of the bottom change of the fish pond should be determined according to the season and weather conditions. Generally speaking, spring and autumn are the key periods for the bottom reform of fish ponds. This is because spring and autumn are the time when fish grow vigorously and the water quality changes greatly. At this time, the bottom reform can effectively improve the bottom environment and promote the growth and reproduction of aquatic organisms.
In addition, weather conditions will also affect the timing of the bottom change of the fish pond. If the bottom reform is carried out in rainy weather, it will affect the effect of the bottom reform. Therefore, it is recommended to carry out the bottom reform in sunny weather to ensure the effect and quality of the bottom change.
In conclusion, the frequency and timing of fish pond bottom modification are important management decisions in the process of aquaculture. Farmers need to formulate a bottom reform plan according to the actual situation, and choose the appropriate bottom reform products to improve the bottom environment. At the same time, strengthen the daily management and maintenance work, find and deal with problems in a timely manner, ensure the healthy growth and reproduction of aquatic organisms, and improve the output and efficiency of aquaculture.