世界许多柑桔主产国,由于先后推行了对柑桔品种的保护措施,增益显著。美国加州创行了此项计划。1983年中国柑桔科学代表团在访问加州大学柑桔研究中心时,曾会见了此项计划的主持者及执行者Reuther、Roistacher等人,蒙其介绍。并实地考察。现将所收集的情况报道如下,以供我国柑桔科研、教学与生产的借鉴。 Many major citrus countries in the world have gained significant gains due to the successive protection measures they have adopted for citrus varieties. California, USA set up the plan. In 1983, the delegation of Citrus Science of China met with Reuther, Roistacher and others, who presided over and planned to visit the University of California Citrus Research Center. And field trips. Now the situation is collected as follows, for our citrus research, teaching and production of reference.