| Pointed at the practical problems about ecological adaptability by straw mulch and residual film difficult recovery by film mulch, set up two dominant factors as mulch mode and irrigation quota, researched the effects of irrigation on film by crushed wheat straw padding to corn seedling and yield. The mulch mode designed as four levels: Without mulch (N), straw mulch (S), plastic film mulch (F) and plastic film mulch by crushed wheat straw padding (SF). The irrigation quota designed as three levels: High (H, 900 m3·hm-2), Middle (M, 750 m3·hm-2), and Lower (L, 600 m3·hm-2). The results showed that: The SF significantly increased the seedling emergence rate and yield, compared with S, the seedling emergence rate was increased 49.50% and the grain yield was increased 4 415.79 kg·hm-2. So the SF can be possible to solve the problem “Lower emergence rate and low yield” by straw mulch in Northwest Arid Regions, China. From the yield point of view, the best combinations were FL and SFM, which the irrigation quota can be reduced to L(600 m3·hm-2) and M (750 m3·hm-2), these were highlighted the effects of water-saving and yield-increasing with SF and F. Among the SF, the crushed wheat straw was useful to recover the plastic film stripping from soil and to solve the environmental problem of residual film difficult recovery in film mulching. |