鱼种科学放养六要素科学放养鱼种是精养高产的重要措施，鱼种放养必须做到以下六个要素：一、放养时间要早。鱼种放养宜从１１月开始，至翌年２月结束，使鱼类早适应环境，促进早春生长，延长生长期。二、鱼种质量要好。标准是：同池同种鱼规格均匀，体质健壮，肌肉肥厚、... Six species of stocking scientific stocking Scientific stocking of fish species is an important measure of intensive high-yielding, stocking must do the following six elements: First, stocking time to early. Fish stocking should start from November to February the end of the following year so that fish adapt to the environment as early as possible to promote early spring growth and prolong the growth period. Second, the quality of fish species is better. The standard is: with the same size of the same species of fish, physical fitness, muscle hypertrophy, ...