1987年9月中旬在安徽省屯溪市召开了第五届全国乌桕科技协作会议,到会的有河南、江苏、安徽、湖北、四川、浙江、江西、湖南、贵州、云南、广西和上海等省(市、区)的科研、高校、经营单位及厂家代表45人。会议收到论文10余篇。会上交流的论文有《降水量、气温与乌柏籽含油量的关系》、《不同修剪强度对乌桕产量的影 In mid-September 1987, the Fifth National Science and Technology Collaboration Conference was held in Tunxi, Anhui Province. The meeting was attended by Henan, Jiangsu, Anhui, Hubei, Sichuan, Zhejiang, Jiangxi, Hunan, Guizhou, Yunnan, Guangxi and Shanghai Provincial (city, district) research, universities, business units and manufacturers on behalf of 45 people. The conference received more than 10 papers. Papers exchanged at the meeting, “precipitation, temperature and the relationship between the oil content of Uber seed”, "different pruning intensity of the yield