Abstract: Aiming to comprehensively evaluate the variety resources of tung oil in Guangxi, the tung oil production, fruit characters and physicochemical property of seven main varieties of Vernicia fordii including Nandan Bainian, Longsheng Dapantao, Sanjiang Wuzhao, Gongcheng Duinian, Longlin, Longlin Aijiao and Du'an Aijiao were investigated and analyzed, and comprehensive evaluatuin was carried out with fuzzy mathematics. The results showed that,Nandan Bainian, Longsheng Dapantao tung oil showed the best performance, and Longlin Aijiao was the better, the three fine varieties can provide references for the selection of Vernicia fordii varieties in northern Guangxi, adjacent area Guizhou and Hunan provinces.

Key words: Vernicia fordii, economic characters, fuzzy mathematics, comprehensive evaluation