章古台沙地长白松、欧洲赤松的引种

Introduction of Pinus sylvestriformis and Pinus sylvestris to Zhanggutai Sandy Area

针对科尔沁沙地治沙植物匮乏、树种结构单一等问题,自1981年开始,在章古台沙地引种长白松和欧洲赤松。通过育苗、造林试验表明:长白松根系发达,易繁殖,抗逆性强,生长速度超过对照树种樟子松,可在章古台及其类似地区作为治沙造林、水土保持和绿化树种示范推广;芬兰种源的欧洲赤松造林成活率、保存率、生长量均较差,建议选择更有希望的种源进一步研究。

Pinus sylvestriformis and P, sylvestris have been introduced to Zhanggutai sandy area since 1981 aiming at the shortage of vegetation and unitary structure of tree species in Keerqin Sandland. Results of seedling culture and afforestation showed that P. sylvestriformis with well-developed root system and high resistance is readily propagated by seeds, and it grows fas- ter than P. sylvestris var. mongolica （CK）. It is suggested that P. sylvestriformis could be popularized as an afforestation tree species in sandy areas in terms of its functions of sand fixation, water and soil conservation, while P. sylvestris from Finland is not suitable to be planted in Zhanggutai due to its low survival rate and slow growth.