临清市是鲁西北产棉大县 ,棉花产业为国民经济的主要支柱之一。 2 0 0 1年地膜覆盖棉种植面积1 5 0 0 0公顷 ,其中地膜棉早衰田面积约 5 4 0 0余公顷 ,占种植面积的 36%。该市农技中心于 9月下旬对地膜棉早衰田进行了技术考查和分析。1地膜棉早衰原因1 .1品种选择不对路。 2 0 Linqing is a major cotton producing county in the northwest of Shandong Province, and the cotton industry is one of the main pillars of the national economy. In 2001, the area covered by plastic film mulching was 15,000 hectares, of which the area covered by pre-mulched cotton film was about 5400 hectares, accounting for 36% of the acreage. The city’s agricultural technology center in late September of cotton mulberry prematurely affected areas for a technical examination and analysis. 1 cotton membrane premature senility reasons 1 .1 species do not choose the right path. 2 0