The biological basis consists of: (1) the development of oocytes in the ovary of the broodfish is not completely synchronous.
草鱼一年多次产卵的生物学基础主要是：(1)成熟草鱼卵母细胞发育的不完全同步性。
2
Egg weight and egg diameters are mainly influenced by maturing factor, and are not correlated to biological indexes of broodfish.
卵重、卵径主要受成熟系数的影响，与母体生物学指标关系不密切。
3
This paper studied the techniques of pond domestication and artificial propagation of broodfish of Erythroculter ilishaeformis and the cultivating of its summer fingerlings.