根据水色辨水质四川省水产学校黄广森根据水色鉴别鱼塘中俘游生物的组成情况，以判断水质的优劣，既简便又迅速，在渔业生产上很有实用价值。１．黄绿色在放养量为每亩５００尾，其中鲢、鳙鱼（５∶２）占７０％的鱼塘中，用高效有机肥或化肥作追肥，每亩用尿素２．５公斤... According to the aquatic color water quality Huang Guangsen School of Fisheries in Sichuan Province based on water color identification of the biological composition of fish ponds to determine the pros and cons of water quality, both simple and rapid, very useful in fishery production. 1. Yellow-green stocking 500 per mu, of which silver carp, bighead carp (5: 2) accounted for 70% of the fish ponds, high-efficiency organic fertilizer or fertilizer for top-dressing, urea 2.5 kg per mu ...