在养猪生产高速度发展的大好形势下,嘉兴地区又发现、培育了高产优质的水生饲料——大球藻。为了扩辟这一饲料来源,适应养猪生产大跃进形势的需要,我们于1960年6月在吴兴县进行群众养殖和利用大球藻情况的调查。兹将调查结果总结报告如下:一、大球藻的生物学特性大球藻俗称萍沙、小粒萍、颗粒萍;在植物分类学士称为无根萍(Woffia arriza Wimm.),是属于浮萍科无根萍属的一种水生植物。体形细小如砂,为浮萍科中体型最小的一类。叶状体如球形,色绿或淡绿,长1毫米,宽不及1毫米。飘浮水面:无根须。大球藻生于池沼水面,分裂繁殖生长;性喜温暖,也耐寒冷;生长期很长,达220—230天。每月三 Under the favorable situation of high-speed pig production development, Jiaxing also found that it has cultivated a high-quality and high-quality aquatic feed, In order to expand this feed source and meet the needs of the great leap forward in pig production, we conducted a survey on mass breeding and utilization of the bacteria in the wuxing county in June 1960. The survey results are summarized as follows: First, the biological characteristics of the carp algae commonly known as Ping Sha, small grain Ping, grain Ping; bachelor in plant classification known as the rootless (Woffia arriza Wimm.), Is a duckweed A non-rooted aquatic plant. Smaller, such as sand, duckweed Branch of the smallest body type. Fronds such as spherical, greenish green or light green, 1 mm long, less than 1 mm wide. Floating surface: no root beard. Chlorella was born in the pond water, split breeding growth; sexual hi warm, but also resistant to cold; growth period is very long, up to 220-230 days. Three every month