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近年来,随着地膜植棉新技术的应用,尤其是超宽膜、膜下滴灌等植棉技术的推广应用,为三棱草繁衍创造了适宜的生态环境,致使棉田三棱草蔓延扩散之势日趋加重。三棱草危害期主要在棉花苗期,当大量的三棱草在棉田( 30 0～40 0株·m-2 )与棉株争肥、争水、争光时,严重影响地膜采光面
In recent years, with the application of new technology of plastic film mulching, especially popularization and application of ultra-wide film and drip irrigation under mulch, the suitable ecological environment has been created for the multiplication of Sanxiancao grass, resulting in the spread and spread of Sanxiancao cotton The situation is getting worse. In the cotton seedling stage, when a large number of Agriophyllum schinifolium L. competed with cotton plants in the cotton field (30 0 ~ 40 0 plants · m-2) for fertilizer, water and glory, it seriously affected the lighting face