前言油桐(Aleurites Fordii Hemsl)是我省主要木本工业油料树种。桐油是工业、农业、国防、渔业、文教卫生、外贸出口和人民生活都需要的重要物资。全省分布较广,栽培历史悠久,品种资源丰富,是全国的重要产区之一。但是,油桐异花授粉和长期种子繁殖,品种混杂,良莠不齐,加之部分产区管理粗放,广种薄收,产量低而不稳,供需矛盾很大。良种是丰产的基础。为了把我省油桐生产和科研工作搞上去,摸清家底,澄清资源,选择和利用优良农家品种,是当前油桐生产和科研工作的重要任务。根据全国油桐科研协作组的统一计划 Preface Tung (Aleurites Fordii Hemsl) is the province’s major woody industrial fuel tree species. Tung oil industry, agriculture, defense, fisheries, culture and education, foreign trade exports and people’s lives are important materials needed. The province is widely distributed, cultivation has a long history and rich variety of resources, is one of the country’s major producing areas. However, cross-pollination and long-term seed breeding, mixed varieties, good and bad, together with extensive management of some areas, a wide range of thin income, low and unstable output, supply and demand are contradictory. Good seed is the basis of high yield. In order to make our province Tung Tung production and research work to ascend, find out the family, clarify the resources, selection and utilization of good farm varieties, is the current Tung Tung production and scientific research an important task. According to the unified plan of the National Cooperative Research Group of Tung tree