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抗虫棉自１９９５年在郓城县开始种植以来，为棉花生产发挥了巨大作用，目前已全面普及。２００１年，全县棉花播种面积２．３５万ｈｍ２，均为抗虫棉。但是，２００１年二代棉铃虫却异常暴发，部分地块受害严重。总的发生特点，一是来势猛，面积大。全县２．３５万ｈｍ２棉田
Bt cotton has played a huge role in cotton production since planting began in Tancheng County in 1995 and is now widely available. In 2001, the county cotton sown area of 23,500 hm2, are insect-resistant cotton. However, the second-generation cotton bollworm in 2001 was unusually outbreaked, and some parcels suffered serious injuries. The general occurrence of characteristics, one is fierce Meng, large area. The county 23,500 hm2 cotton fields