良种的

It was found, in one livestock elite station of Xuzhou, the ejaculum quality,eros and performance of some adult bulls were poor in recent years.

近几年来，徐州市某家畜站饲养部分成年公牛表现常年精液品质不，差，生产能力低下。

Based on the years experiences, the author summarized and provided the main criterion and technique measures for improved cytoplasmic male sterile monogerm hybrid sugarbeet of seed reproduction.

摘要总结了多年雄不育甜单胚型杂交繁育实践经验，对该类品繁育主要原则和技术措施进行探讨。