关键词: 飞播, 飞播成效, 沙障, 种子处理

Abstract:

Aerial-seeding afforestation, as a quickly effective measure, has become an important approach for vegetation restoration and reconstruction in hinterland of Mu Us Sandy Land. Long-term practice demonstrated that ① Setting up sand-barrier in aerial-seeding region can enhance the seeding effect, with a higher seedling rate of 36.5%~37.1% in horizontal-lay 4 m-span sand-banner or in vertical-standing 6 m-span sand-banner in comparison with CK plot. ②Wrapping and pilling seed treatments all can accelerate young plant growth, with higher seedling rate of 10.6% and 13.72% respectively in comparison with CK plot, but wrapping treatment is more beneficial for plant growth, and the root length, root number, underground diameter and aboveground height increased respectively by 11.92 mm, 0.9 strips, 0.39 mm and 4.66 mm in comparison with CK plot; ③The survival seedling number in surface-treated quadrates is remarkably higher than that in CK under all experiment habitats, especially in comprehensively treated plot with survival young plant as 6~8 times as that of CK.

Key words: aerial-seeding, effect, sand-barrier, seed treatment