First, adjust the transposition method to replace the worn parts of a position, the use of parts not worn or lightly worn parts continue to work. Second, the repair size Note The damaged parts will be refurbished to change the geometry of the size, and at the same time with the corresponding change ......
In recent years, marine aquaculture of Takifugu Rubripes has been carried out in coastal provinces and cities and has become a new species of mariculture in China. At present, most of the seedlings required by the breeding units must be transported over long distances, and due to the high price of ......
The rise and popularity of the breeding industry in China from the 1980s and 1990s to the difficult survival of today have brought enormous pain to farmers. However, in the face of the brutal market, they combined the advantages of their own regions to take advantage of the adjustment of the agricu ......
For a long time, chitin hidden in shrimp heads and crab shells has been considered as garbage and naturally lost. It has not been discovered until recently by scientists and technicians that chitin and its derivatives have been used in agriculture, medicine, food, chemicals, cosmetics, etc. Biotech ......
Females of wild turbot matured in 3rd instar, mature males in 2nd instar, and matured in 5-8 months. Cultured turbot fish males mature at age 1, and females can reach sexual maturity at 2 years of age. The gonad development of turbot is particularly sensitive to light. Artificially cultivated brood ......
First, computer automatic control technology Foreign computer automatic control technology has already been applied to the processing of fish feed. In some large and medium-scale fishery feed processing plants, dozens of feed formulas are accurately controlled by computer automation. The automatic ......
Introduction Shellfish culture has the characteristics of short food chain, strong settlement, good nursery and breeding base, relatively low cost, etc. It has become one of the important pillar industries of mariculture in coastal areas of China. In the past decade or so, China's shellfish aqu ......
Nowadays, it is very common for farmers to use the remaining chemical fertilizers and pesticides together. Many farmers do not understand the properties of chemical fertilizers and pesticides. I do not know that the combination of the two will have undesirable effects. (1) It is easy to decompose t ......
Since the ancient times, folks in China have seen turtle meat as an excellent food for advanced nutritional supplements and disease prevention. Turtle contains protein, calcium, fat, sugar, etc. The turtle plate, flat bones, bones, bone marrow, etc., are rich in hematopoietic cells, turtle meat and ......
(I) Autumn and winter techniques of grass carp and herring broodstock 1. Feeding: The water temperature is suitable in autumn, which is the season when grass carp and herring eat more food. Throughout the autumn, the feeding principle of “concentrate-based, refined-coarse†should be ado ......