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1996年《科学养鱼》第8期上刊出拙作《草鱼多联疫苗的制作及应用》一文后，许多读者来信询问有关问题。现综合读者提出的问题回答如下。问：注射疫苗的方法及注意事项？答：请参阅《科学养鱼》杂志1996年第8期《草鱼多联疫苗......》一文之三。现补充几点如下。草鱼春片鱼种，?
After reading my essay “Production and Application of Grass Carp Polyvalent Vaccine” on the 8th issue of “Scientific Fish Culture” in 1996, many readers wrote letters asking relevant questions. Now comprehensive reader’s questions are as follows. Q: Vaccine injection methods and precautions? A: Please refer to the article “Scientific Fish Culture” 1996 No. 8 “grass carp polyvalent vaccine ...” article three. Now add the following points. Grass carp spring fish species?