In the fertilized egg cell, the egg membrane quickly swells, and the egg becomes slightly yellow and slightly transparent and enters the embryonic development stage of the goldfish. If the egg cells become opaque and then gradually white, this is due to unfertilized, this egg cell will not.......
According to many fish farmers, the low survival rate of fry per year is an important factor that affects the economic benefits of fish farming. So, how to improve the survival rate of fry? The key is to pay attention to science in the selection of ponds, clear ponds, test water, seedling .......
It can be used.......
I. Disease and Insect Situation
Citrus rust wallworm larvae grew rapidly. In July, the number of insect populat.......
In order to carry out the implementation of the province's controlled-release fertilizer and straw returning field meeting held on July 8 and the Provincial Soil Fertilizer Terminal's “Notice on the Implementation of the One-off Fertilization Technology One-off Fertilization .......
Bio-source food preservatives are mainly made of natural agricultural and sideline products, and are prepared by biological techniques such as fermentation. They are highly efficient, non-toxic and have wide applicability. At present, the main biological source fo.......
Civet breeding technology
(1) The construction site requires the construction of a site with a south facing position, a relatively quiet area, a relatively high topography, and favorable drainage. The rearing households can determine the size of the quarters according to the numbe.......
2. Seed selection and treatment Selec.......