The stress of sprays and fry is not only present in the production process of the company, but also serious when farmers raise seedlings. Therefore, the company’s sales and production personnel should be highly regarded. 1, if the pH is too low, the fry will not be stressed, but it is not conducive to the recovery of the fry's constitution, easy to disease, can be adjusted to the normal range with lime; if the pH is slightly higher 8.0-8.5, can be passed cattle, sheep feces Or sugar and even roughage. The decomposition of organic matter releases carbon dioxide, which also has a fertilizer effect. If the pH is too high, in the morning above 8.5, it is necessary to adjust with acetic acid in advance. The steps are as follows: (1) Measure the amount. Use 200 liters of pond water in a large bucket, add 2 drops of acetic acid (about 0.1 ml, ie 0.5 ppm) with a pipette, and measure the pH after stirring. If it is still high, continue 2 drops until the pH is 7.3-7.6. Calculate the dosage of acetic acid. . Care must be taken not to exceed 4ppm. If the amount is too large, it will cause a long-term lack of oxygen in the water body, and the ammonia nitrogen and sub-salt will rise. It also indicates that the water is poured into the water too soon after the lime pond is prepared. (2) According to the total amount, several times sprinkling, turn on the aerator to stir, 2 hours after each sprinkling, Quantang measured the pH in all directions, such as the upper layer of water, the lower layer of water and the surrounding water, to judge the pH more scientifically. It also prevents calculations from being inaccurate. (3) If the amount is not enough, it can be repeated. In short, it takes some time to prepare. Due to the difference of different dripping tubes, if conditions permit, it is also possible to first detect how many drops of water 1 ml, generally 20-25 drops. If you do not understand step 1, you can ask questions. If the transport distance is very short, or if the pH value in the bag when the seedlings are placed is 6.8 or more, the fishpond pH will not be stressed even if it reaches 9.0. 2, there must be someone to guide the release of seedlings (technicians, farmers). When fish fry go to Tongtou, it is necessary to confirm that the pond pH is in the normal range. 3, take two bags of fry, open the bag against the water, circle the bag mouth, so that the bag floats on the water. (If the fishpond pH is in the normal range, the pH after being filled with water is about 6.8-7.0, and the seedlings will not be stressed in the bag; but if the pH of the fishpond is too high, it is necessary to test it while balancing the water to ensure the bag. The pH of the internal water should not exceed 7.5, otherwise watering too much and stress within the watering bag). If it is stressed in the watering bag, it indicates that the fish transport time is too long or the packing density is too large and the reason is that the carbon dioxide in the bag is too high, the fish status is very poor (redness of the fish), or the pond has too much pH, ​​so it is not suitable Investment seedlings. In this case, please contact me in time. First, find the reason. Second, discuss the rescue measures. 4, put Miao test water. The water adaption time of the seedling bag is based on the lack of oxygen. Generally, the water spray takes about 1 hour, and the fry is about 30 minutes. The more the water is exchanged, the longer it can be adapted. After watering for a certain period of time, put 1 bag of seedlings into the fish pond and observe for 5-10 minutes to see if there is any stress. The earlier the stress is, the more dangerous it is. If there is a small amount of stress after 10 minutes, the relationship is small and it will recover. 5, determine the watering time. If there is a small amount of stress in the first bag seedlings, extend the time for the second bag seedlings to water, and repeat step 4 to determine the time for watering. However, it should be noted that there should be no oxygen deficiency during the watering process. 6, guidance. While performing the third step, instruct the unloading of the seedlings to allow the seedlings to float on the water surface to reduce the temperature difference. After the third step is safe, instruct the employees to divert water and methods; after the safety of the fourth or fifth step, guide the employees according to the sequence and Time put seedlings. 7, disinfection. In the low temperature before 1-2 days bleaching powder disinfection, after the release of seedlings with povidone-iodine disinfection, especially the stress of the seedling pond to be strengthened. Dosage reference instructions. 8. Irregular treatment and its hidden dangers: Because it is too late to adjust the pH value (many farmers do not pay attention), when the first bag seedlings have strong stress, they must use acetic acid (or stress agent) in time, and their ingredients are acetic acid or other organic acids. ) Spill. However, due to the rush of time, it is difficult to splash evenly, and the pH of some areas is extremely low, which can lead to abnormal fish fry. It is made from an all-natural, non-stimulant extract of the white bean,which can effectively block the absorption of starch,to lose weight easily. Technical force is the prerequisite for an enterprise, so we insist on
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