In sandy ponds, each turtle can reach 300g 1500 and 400g 1200; In general, there are 700 turtles in a 300-gram-mu soil pond and 500 turtles in a 400-gram-mu soil pond. There are 500 plants in 300g mu of loess pond and 400 plants in 400g mu; There are 600 black soil ponds in 300g mu, and 500 black soil ponds in 400g mu. Take the culture of 1200 per pond as an example. The price of nail fry is 2 yuan per pond, the cost of fry is 2400 yuan/mu, the feeding cost of each pond is 15 yuan, and the cost of a pond is 18000 yuan, plus the cost of water, electricity and vaccines 1000 yuan.

According to the production practice of some farms, 700~ 1000 soft-shelled turtles above150g are raised per mu, and 50 ~150g soft-shelled turtles are raised per mu 1300~2000. Because the small fry of Carassius auratus are not able to adapt to the environment and protect themselves, it is suggested that the young turtles with too small individuals should not be cultured in ponds, and they can be cultured in greenhouses for one winter and then put into Datang in April of the following year.