1·亲龟选择亲龟应选5龄以上,个体结实、无病无伤,行动活泼、四肢健壮的个体。2·雌雄比例一般以雌雄2~3:1为宜。如雄龟比例偏少,则不利雌龟正常受精。3·收卵时间一般于产卵后10~30小时内收卵为宜,如条件允许,则在产卵后3~5天内收卵更佳。一般收卵宜在下午,以免人为干扰白天产 1 · Turtle selection Turtle should be selected more than 5 years old, the individual is strong, disease-free and non-injury, action lively, limbs and strong individuals. 2 · male and female ratio generally male and female 2 ~ 3: 1 is appropriate. As less proportion of male turtles, negative fertilizers normal fertilization. 3. The collection time is generally within 10-30 hours after spawning. It is advisable to collect eggs within 3 to 5 days after spawning, if conditions permit. Generally receive eggs in the afternoon, so as to avoid human interference daytime