地膜棉折膜放苗的效果和方法刘漫道，更志明，弋景耀（陕西省棉花研究所三原７１３８００）折膜放苗：即在直播地膜覆盖棉花出土齐苗以后，不进行打孔放苗，而是将地膜的两个边沿折向棉花小行，放出棉苗继续覆盖小行，使棉花的根区处于半覆盖状态。待棉花进入盛蕾期以后，... Folding film Fangmiao: that is, after the live mulching cotton cover unearthed Qi Miao, do not punch Fangmiao , But the two edges of the plastic film folded into small rows of cotton, release cotton seedlings continue to cover the small row, so that the cotton root zone in a semi-covered state. When the cotton into the Shenglei period, ...