芜萍又称飘莎,它营养丰富:水份88.2％,粗蛋白3.05％,粗脂肪0.38％,粗纤维1.08％,无氮浸出物5.31％和其它物质1.98％,是草、编、鲂夏花初期阶段最喜摄食的食料。江、浙两省的苏州、无锡和菱湖、湖州用芜萍培育出来的草鱼种,规格大,膘好,体质健壮,是闻名全国的淡水养殖系统。芜萍既无根,又无茎,为卵圆形的绿色小粒状体,在水域内以芽孢繁殖。每年10月中下旬下沉池底越冬,翌年4月浮生水面。培育方法简便,繁殖能力强,产量高。现作一简略介绍。一、播种选面积在5分左右,水深1.5米,底质塘泥较厚的背凤向阳的静水塘作培育塘。在播种前,先用生石灰带水清塘消毒。水深2市尺,生石灰用量200市斤左右,隔2～ Wu Ping, also known as the floating sand, it is nutritious: water 88.2%, crude protein 3.05%, crude fat 0.38%, crude fiber 1.08%, 5.31% nitrogen-free extract and other substances 1.98%, grass, The early stages of food consumption of food favorite. Jiangsu, Zhejiang and Ling provinces, Zhejiang and Ling Lake, Huzhou with Wuhu cultivated grass species, specifications, good, strong physique, is the national freshwater aquaculture system. Wu Ping neither root nor stem, oval-shaped green small granular body, spores in the water breeding. In late October every year sinking the bottom of the winter, the following year in April floating surface. Cultivation method is simple, reproductive ability, high yield. Now make a brief introduction. First, sowing the election area of ​​about 5 minutes, 1.5 meters deep, sediment pond thick back phoenix sunny ponds for nurturing ponds. Prior to sowing, first use clear lime with water pond disinfection. 2 feet deep water, lime dosage of about 200 pounds, every 2 ~