棉花是山东省临清市主要经济作物,常年种植面积1郾33万hm2。由于2003年棉花价格回升,2004年播种面积增加到2郾33万hm2,95%以上为地膜覆盖。然而,该年本市绝大部分地膜棉田出现棉苗严重受害现象,造成棉花减产10%左右,而且附近县、市也出现类似情况。1发生为害情况棉苗受害主要表 Cotton is a major cash crop in Linqing City, Shandong Province. Its perennial planting area is 1 郾 330,000 hm2. Due to the recovery of the cotton price in 2003, the sown area in 2004 increased to 2 郾 330,000 hm 2 and 95% or above was covered by plastic film. However, most cotton mulch cotton fields in this Municipality suffered serious damage to cotton seedings, resulting in a decrease of about 10% in cotton output. Similar occurrences occurred in nearby counties and cities. 1 the occurrence of the main case of cotton seedling damage