众所周知,我国黄土高原春季干旱、少雨和多风的气候特点,使得这一地区的造林条件极为恶劣。在苗木移栽过程中,由于具吸收功能的根毛和幼根大量受损,造成根系吸水能力显著降低,同时在幼芽萌动过程中,也会增加了水分的散失,从而使其生长变得十分缓慢,有时甚至导致造林的失败。为 As is known to all, the climatic features of drought, windy and windy spring in the Loess Plateau of China make the afforestation conditions in this area extremely harsh. In the transplanting process of seedlings, the water absorption capacity of the root system is significantly reduced due to a large number of root hairs and young roots with absorption function, and at the same time, the water loss is increased during germination of young shoots so that their growth becomes very high Slow, and sometimes even lead to the failure of afforestation. for