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传统的筛绢纱窗式过滤环道有过滤面积小,容卵量少,孵化率低等缺点,为此,河北省任丘市鱼种场从1988年对照采用筛绢围墙式过滤孵化环道,1989年鱼苗孵化产量增加了1.6倍,突破亿尾,而孵化时间缩短了6天,多增收6万多元。很多单位应用也普遍取得了较好的效果。现将改建的应用结果介绍如下,供有关单位参考:
Traditional sieve silk screen filter ring filter area is small, less capacity of the eggs, hatching rate and other shortcomings, for this reason, Renqiu City, Hebei Province, fish farms from 1988 control using sieve wall sieve incubation loop, In 1989, fry hatchery production increased 1.6 times, breaking the billions, while the incubation time shortened 6 days, more income more than 60,000 yuan. Many units have generally achieved good results. Now the application of the reconstruction results are introduced below, for the reference of the relevant units: