樟子松是我国东北地区防护林、用材林、四季绿化建设的重要树种。虽然樟子松适应性强，但由于受当地春季风大、缺雨、气候干旱、土壤墒情差等条件的影响，春季造林和育大苗难度大，成活率低，生长慢。解决这一问题的方法，主要从提高地温和土壤保墒方面考虑。为此，我们于２０? Pinus sylvestris is an important species of shelterbelts, timber forests and green seasons in Northeast China. Although Pinus sylvestris var. Mongolica is adaptable, its afforestation and seedling emergence in spring is difficult, its survival rate is low, and its growth is slow due to the influence of local spring monsoon, lack of rainfall, arid climate and poor soil moisture. To solve this problem, mainly from the perspective of improving soil moisture conservation mild soil considerations. To this end, we at 20?