The fry is the collective name from the hatching to a body length of 3.3 cm. Newly hatched fry are known as splashes or fish flowers and sea flowers. The fish fry which has just hatched for half a day to two days is also called “niaokou seedlings”; the fry which hatched on the .......

1, leveling site: depth 10cm, the surface soil layer should be fine and thick, the maximum soil particles does not exceed 1.5cm, and the surface layer.

2. Watering: Immediately after planting and laying, water should be poured, and water must be poured thoro.......

First, cage structure cage material is polyethylene, cable diameter is 1.13 mm, mesh size is 3-5 cm, cage size is 4mx7mx2m, single-layer cage, frame is bamboo pole, bamboo raft diameter It is about 10 centimeters in length, and several of them are connected together and fixed with a sinker.......

Overwintering freshwater white bream species must be physically strong, regular in size, non-injury-free, and smooth in appearance. Where fish is thin, swimming is slow, and foraging is poor, they should be removed as much as possible.

In the wintering season, large-s.......

The regulation of temperature in the greenhouse mainly refers to two aspects of insulation and cooling. The greenhouse insulation is mainly in late autumn, winter and spring, generally starting in late October and ending in late April. Commonly used heating materials, stoves, heating wire,.......