close breeding

• 杂交育种； 杂交繁育

close breeding的用法和样例：

例句

1. Research progress on cross breeding of Chinese fir was summarized in this paper and the primary insufficiency was analyzed.
   摘要概述了我国杉木杂交育种研究进展，分析了杉木杂交育种存在的主要问题及其对策。
2. The index of drought resistance lies in yield increase and drought resistance.The hybrid breeding is the main measure for mungbean breeding.
   抗旱指数是抗旱性和丰产性的有机结合，杂交育种是提高丰产性的关键。