中国农业科学院棉花研究所等单位主持的“九五”全国优质棉基地县建设科技服务项目 ,要求1 997～ 1 999年累计在山东省平原县建设 3333公顷 ,棉花示范区 ,三年平均产量比“八五”后三年平均增产 1 5%以上 ,新增产值 70 0万元。 1 997～ 1 999年在山东省平原县共建设核心示范区 Cotton Institute of Chinese Academy of Agricultural Sciences and other units under the auspices of the “Ninth Five-Year” high-quality cotton base counties in the construction of science and technology service projects, required 997-1999 cumulative total of 3333 hectares in Shandong Province Plain County, cotton demonstration area, the average yield over three years After the “Eighth Five-Year Plan”, the average increase rate of output over the past three years was over 15%, with a new output value of 7.0 million yuan. From 1999 to 1999, a total of core demonstration areas were set up in Pingyuan County, Shandong Province