飞蛾槭等树种在石漠化地区栽培试验

石漠化地区生态治理,树种选择是关键。选择飞蛾槭、长花厚壳树、光蜡树等3个树种,分别在中、轻度石漠化地区进行栽培试验。结果表明:不同树种的造林成活率和保存率均存在显著差异;光蜡树的造林成活率和保存率都最高,在中度石漠化地区分别为94.1%、92.2%,在轻度石漠化地区分别为97.1%、94.1%。造林3.5年后,不同树种生长量的差异也显著,其中光蜡树生长量最大,在中度石漠化地区平均树高2.03m,平均地径3.0cm;在轻度石漠化地区平均树高2.55m,平均地径4.1cm,且都生长良好。飞蛾槭和长花厚壳树在中度石漠化地区均生长不良,在轻度石漠化地区则都生长较好。初步认为,飞蛾槭、长花厚壳树只适合在轻度石漠化地区栽培,而光蜡树在中、轻度石漠化地区栽培效果皆较好,可推广应用。

Cultivation experiment of Acer oblongum and other tree species in rocky desertification area

The selection of tree species is the key of ecological control in rocky desertification areas.Acer oblongum,Ehretia longiflora and Fraxinus griffithii were selected for cultivation experiments in moderate and mild rocky desertification areas.The results showed that there were significant differences in survival rate and preservation rate among different tree species.The survival rate and preservation rate of F.griffithii are the highest,reached 94.1%,92.2% in moderate rocky desertification area and reached 97.1%,94.1% in mild rocky desertification area.There were also significant differences in the growth of different tree species after three and a half years.F.griffithii have the largest growth in tree height and ground diameter,which reached 2.03 m and 3.0 cm in moderate rocky desertification area,2.55 m and 4.1 cm in mild rocky desertification area.A.oblongum and E.longiflora grew poorly in moderate rocky desertification areas,but better in mild rocky desertification areas.It is considered preliminarily that A.oblongum and E.longiflora are only suitable for cultivation in mild rocky desertification areas,while F.griffithii has better cultivation effect in both moderate and mild rocky desertification areas and can be popularized and applied.