Will directly affect the breeding of adult clams. Whether or not scientific feeding can be used is the key technology that affects the growth and quality of the seedlings. To this end, introduce the scientific feeding techniques for seedling cultivation for reference applications. Like other aquatic animals, feeding can be based on four principles, namely, qualitative, quantitative, timing and positioning. However, the four contents of seedling cultivation and feeding have their own characteristics. First, the qualitative due to the seedlings in the growth process not only to accumulate energy to increase weight, but also for the growth and development of various functional organs in the body to provide a variety of nutrition and energy. Therefore, the quality of feed produced by seedlings is unusual. There are a lot of commercial feeds for the seedlings on the market, but they are machine feeds that have been machined through many processes. Some nutrients with high activity are inevitably lost during processing. Therefore, some nutrients necessary for the growth and development of seedlings should be added on the basis of commercial feed. Such as fresh carrots, fresh eggs, calcium milk powder, fresh fish, red worms and so on. The amount added is 5%-10% of the dry feed amount on that day. Before adding, it must be processed into pulp or crushed and mixed into commercial feed to make pellets and feed it. Second, the amount of feed for the quantitative seedlings is not only to eat well but also to eat, but should not use eight points full. So the bait rate should be set at 5%. Although this proportion is higher, it will not cause too much waste and affect the quality of water because of the absolute amount. If the area of ​​a pond is 20m2, the average weight of each seedling is 4g, and the total weight is 2000g. Calculated at a bait rate of 5%, it is 100g, and even if it is wasted, it is only 100g. Therefore, at this stage, we prefer not to eat nor to eat. The purpose is to train the seedlings' strong desire to eat. The actual feeding amount of each meal should also be increased or decreased by 5% depending on the actual eating situation at that time. Third, the timing is feeding time, but also includes the number of feeding. Due to the poor adaptability of seedlings, feeding should be performed in a short time multiple times. Therefore, the number of feedings should be set at 4 times a day, ie, 5 a.m., 10 p.m., 3 p.m., and 8 p.m. The eating time should be set at 1 hour, that is, 1 hour after feeding should be observed in the actual eating situation to determine the next meal feed. Fourth, positioning and positioning is feeding position. At present, 1.8xl corrugated high-quality cement tiles are used as feed plates. In order to enable the pupa to collect food in a relatively short period of time, it is better to set one cement tile per 200 seedlings. When feeding, it is required to spread the feed evenly and accurately on the feed plate. Of course, in addition to serving as a food table, cement tiles can also serve as a habitat for seedlings.