为了适应我国工厂化养鱼和网箱养鱼事业的发展,探索如何在相同的饲养条件下,加快集约化养殖鱼类的生长速度,降低饲料系数,提高单位面积产量,是很重要的。几年来,我们经过多次试验,研制了一种鱼类生长促进剂——复方腐植酸,并于1981年11月15日至12月15日,在株州市水产良种场进行了饲喂越冬尼罗罗非鱼的初步试验,取得 In order to adapt to the development of factory-made fish culture and cage culture in China, it is very important to explore how to speed up the growth rate of intensively-cultured fish, reduce the feed coefficient and increase the yield per unit area under the same breeding conditions. Over the past few years, after many tests, we developed a fish growth enhancer - compound humic acid, and in the November 15, 1981 to December 15, Zhuzhou aquatic breeding field was fed overwintering Preliminary test of Nile tilapia made