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3层膜覆盖育苗较常规2层膜育苗的棚温和地温都有所增加，秧苗素质明显提高。水稻生长发育期间，植株生长健壮，抽穗期提前1～3d，成熟期提前2～3d，增产幅度较大，而且稻米的品质也有明显的改善。
Three layers of film cover seedling nursery conventional 2-layer film nursery shed mild ground temperature have increased, significantly improved the quality of seedlings. During the growth and development of rice, the plant grows robustly, the heading stage is 1 to 3 days ahead of schedule and the maturity stage is 2 to 3 days ahead of schedule. The yield increase is large and the quality of rice is obviously improved.