为了贯彻“自力更生”的方针,自己解决苗种,我们坚持土法上马,搞了一个土暖房保种越冬获得成功。1974年底越冬的六千一百多条非洲鲫鱼种,已安全过冬,为今年进一步大养非洲鲫鱼提供了苗种,为增产打下了物质基础。对非洲鲫鱼越冬管理和池塘混养,我们的初步体会是: In order to carry out the policy of “self-reliance,” and to solve the seed nurseries ourselves, we persevered in the introduction of native law and succeeded in engaging in a warm earth house for species conservation. More than 6,100 African carp species that were wintering at the end of 1974 have been safely winterized, providing seed for further raising African carp this year, laying a material foundation for increasing production. Overwintering management of African crucian carp and pond polyculture, our initial experience is: