郧县油桐研究所位于桂花公社桃树垭同兴大队。这里是丘陵地带,缓坡较多,油桐生产具有悠久的历史。但是这里的油桐品种由于天然杂交和长期栽培的结果,都有很大变异,株间产量高低悬殊,有的品种也产量很低,经济价值不高。该所近几年来为了改变这个状况,先后选出了一些高产优树,并在此基础上采用嫁接繁殖方法,培育合乎要求的新品种,加速实现油桐良种化取得了显著效果,为全县油桐生产的发展走出了一条 Yun Tong Oil Institute is located in Guihua commune peach tree Pass with the brigade. Here is a hilly area, more gentle slope, tung tree production has a long history. However, due to the natural hybridization and long-term cultivation, the varieties of Tung oil in this area all have great variation. The output of the strains varies greatly. Some varieties also have low yields and low economic value. In order to change this situation in recent years, the institute has successively selected some high-yielding and excellent trees and, on the basis of this, adopted grafting and breeding methods to cultivate new varieties which are in line with requirements and accelerated the realization of improved seed quality of the oil-tung tree. As a result, Tung Tong production of a development out of