桐油为我国传统出口物资,二次大战前我国桐油占领国际市场,近年来出口锐减,除国外竞争原因外,病害问题成为生产中突出因素。四川桐油主产区涪陵专区油桐黑果病近年日趋严重,许多乡区造成绝产,对农民经济收入引起重大损失。该地区因交通闭塞,迄未报导病株都是4年生以上盛果期3年桐Aleurites fordii Hemsl。病树开花后,幼果发育弛 Tung oil is the traditional export material of our country. Before the World War II, China’s tung oil occupied the international market. In recent years, exports have dropped sharply. Apart from the reasons for foreign competition, the disease problem has become a prominent factor in production. The Tung Tung black fruit disease in Fuling area, the main producing area of ​​Sichuan Tung Oil, has become increasingly serious in recent years. Many rural areas have caused serious losses and caused serious losses to the peasants’ economic income. Due to traffic congestion in the area, it has never been reported that the diseased plants are all over 4 years old and have a fruitful period of 3 years, Tong Aleurites fordii Hemsl. Sick tree flowering, young fruit development relaxation