利用沼气发生窖渣肥养鱼的试验报告

作者于1982年4月至1983年1月在顺德勒流公社新埠三队新能源村的两个鱼池进行了沼气窖渣肥及猪粪肥养鱼对比试验.饲养试验结果;施沼气窖渣肥的鱼池(简称试验池),水质良好,溶氧量,磷、氮的含量均比施猪粪的鱼池(简称对照池)高;浮游生物种类前者的多,易消化的硅藻、甲藻和黄藻的比例也较高;主要养殖的鳙、鲢、草鱼的规格比对照池的大.分析鱼的食性,所含浮游生物总量也比对照池的多.沼气窖还兼收了沼气能源,经济效益大,且池水中无寄生虫卵,符合卫生标准.

A REPORT ON UTILIZING METHANE CELLAR RESIDUES FOR POND FISH CULTURE

Researches on the utilization of cellar residues after generating methane for freshwater pond fish culture was carried out during 1982-1983 in Leliu District of Shimdf of Shimde Country,Guangdong Province. The results showed that (1) N, P and DO concentrations were higher in pond 1 (with cellar methane residues ) than those in pond 2 ( with pig manure);(2 ) The planktons were more varied in pond 1 and more digestible to fishes such as Diatom, Xanthophyta and Pyrrophyta and their breeding rates is higher in the pond;( 3 ) The main culture fishes harvested from pond 1 were larger in size than those harvested from pond 2 after the same period of cultivating and ( 4 ) in addition to the extra energy gained from methane generating,the water in pond 1, was found remaining not polluted and without eggs of parasites, which was quite different from the case in ponds with pig manure spreading like pond 2 .