建立健全繁供种体系促进棉花生产的发展山东省夏津县种子公司（２５３２００）刘树海夏津县位于鲁西北黄泛冲积平原，是全国植棉大县，优质棉基地县和棉花出口基地县。常年植棉面积３．３万公项左右，素有“银夏津”之称。回顾多年来夏津棉花生产的发展，繁供种体系的建立... Establish and improve the production and supply of species system to promote the development of cotton production Xiajin County, Shandong Province Seed Company (253200) Xiajin County is located in the northwestern Shandong Yellow River flood plain alluvial plain, is a national cotton counties, high-quality cotton base counties and cotton export base counties. Annual cotton area of ​​about 33,000 public project, known as “silver Xiajin” said. Reviewing the development of Xiajin cotton production over the years