山东省是我国的重点产棉区之一，８０年代山东省植棉面积约占全国棉田面积的１／４，棉花产量约占全国总产的１／３，１９８４年山东省棉花生产创历史最高水平，总产达１７２．５万ｔ，其后山东省棉花生产一直处于滑坡状态，特别是近几年来由于棉铃虫大发生，粮棉比价不合... Shandong Province is one of the key cotton-producing areas in China. In the 1980s, the cotton planting area in Shandong Province accounted for about 1/4 of the national cotton area and the cotton output accounted for about one-third of the national total. In 1984, the cotton production in Shandong Province hit a record high Level, the total output reached 1,725,000 t, followed by cotton production in Shandong Province has been in a state of landslide, especially in recent years due to large occurrence of cotton bollworm, grain and cotton parity substandard ...