一、前言 樟子松具有耐瘠薄、耐干旱、耐寒等生物学特性,而且材质优良,用途广泛。是用材林、防护林、固沙林和居民区绿化的优良树种。已列为营造“三北”防护林的重要先锋树种。近些年来栽植范围迅速扩大,人工林面积迅速增加。但是,随着栽培区域的扩大,人工林面积的增加,樟子松病害种类也有所增多,某些病害发生面积有所扩大,危害程度有所加重。可是到目前为止,尚没有见到有关樟子松 First, the foreword Pinus sylvestris with barren, drought-resistant, cold-resistant and other biological characteristics, but also good material, wide range of uses. Is a timber forest, shelterbelts, sand and residential area afforestation fine tree species. It has been listed as an important pioneer tree species for the “Three Norths” shelterbelt. In recent years, the planting area has rapidly expanded and the area of ​​planted forests has rapidly increased. However, with the expansion of cultivated areas and the increase of plantation area, the species of Pinus sylvestris var. Mongolica have also been increased. The area of ​​some diseases has expanded and the degree of harm has been aggravated. But so far, have not seen about Scotch pine