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我省从明朝在南京植油桐,迄今已有600多年,油桐遍及全省.建国后,在高淳、句容、溧阳、江宁等地先后发展油桐,面积曾达14万亩.目前投产面积约1万亩,全省年产桐油不足1000担,供需矛盾很突出.今后必须自力更生,积极恢复发展油桐生产,努力增产桐油.一、积极恢复油桐面积发展油桐生产,必须按照油桐的生态条件和生育特性,掌握以下技术:1.适地适树油桐是温带、亚热带经济树种.我省自然条件对发展油桐是基本适合的,但必须坚持适地适树.(1)气候条件:油桐要求气候温暖湿润,年平均气温15～22℃,并以17～19℃为最适宜.以7月27～29℃,夏季≥22℃,有130～140天为好.1月5～9℃,冬季<-8℃,
Our province planted tung tree in Nanjing from the Ming Dynasty, so far it has been more than 600 years, with tung oil growing all over the province. After the founding of the People’s Republic of China, tung oil trees were successively developed in Gaochun, Jurong, Liyang and Jiangning, covering an area of 140,000 mu Production area of about 10000 acres, the province an annual output of less than 1000 tons of tung oil, supply and demand is very prominent .To be self-reliant in the future, and actively restore the production of tung oil, efforts to increase tung oil .To actively restore tung oil tung area development, must follow Tung tree ecological conditions and reproductive characteristics, to master the following technologies: 1. Appropriate tree tung tree is a temperate, subtropical economic species. The natural conditions of our province for the development of tung tree is basically suitable, but we must adhere to the appropriate tree. 1) Climatic conditions: The tung tree needs the climate to be warm and humid with the annual average temperature of 15-22 ℃, and the most suitable temperature is 17-19 ℃, with July 27-29 ℃, summer ≥22 ℃ and 130-140 days as well January 5 ~ 9 ℃, winter <-8 ℃,