山东棉花生产发展演变的思考杨先芬①于谦林１发展历程的回顾山东省历来是我国的产棉大省，鲁西北五区更是山东历史上形成的老棉区，素有“金高塘、银夏津”的美誉。回顾建国４７年来，山东棉花生产的发展，经历了由低速到高速、曲折变化、螺旋上升的过程。大体可分为四个... Development of Cotton Production in Shandong Province Yang Xianfen ① Review of the Development of Yu Qianlin 1 Shandong Province has always been a cotton-producing province in China. The five districts in the northwest of Shandong Province are also the old cotton area formed in the history of Shandong. They are known as “Golden High-Tang and Silver Xiajin ”in the world. Recalling the founding of the country 47 years ago, the development of Shandong cotton production has experienced from low to high speed, tortuous changes, the process of spiral. Can be roughly divided into four ...