梯田地埂灌木树种栽培技术研究

Cultivation technique of main shrub species on terrace embankment

对西吉县梯田地埂灌木树种(以杞柳和柠条为主)的栽培技术进行了研究。结果表明:(1)造林整地时,梯形槽和鱼鳞坑整地均可,整地深度以40cm左右为宜,整地时间以雨季预整地最佳;(2)造林方法要根据具体树种而定。柠条最好选择植苗造林,春秋皆宜,杞柳适宜秋季造林,总体上秋造的苗木成活率和存活率明显好于春造。另外,在柠条播种造林时,坡向最好在阴坡;(3)杞柳造林时的种植深度以种条覆土2cm最佳,适宜的几种种植深度模式为:阳坡种条覆土2cm、阴坡种条齐地面、阴坡种条覆土2cm;(4)造林整地、种植深度对苗木生长量的影响较大,造林方法、造林坡向、种植深度对造林成活率和保存率的影响相对显著。

The cultivation techniques of shrub on terrace embankment in Loess Plateau were studied. The results showed that:(1) soil prepatation is best in the rainy season, with a planting the depth of 40?cm, whether fish scale pit or ladder-shaped ditch preparation; (2) there is a difference in the afforestation season between different kinds of trees.Caragana korshinskii is suitable to be planted in spring and autumn, and Salix koryanagi Kilimara is suitable in autumn, but the species planted in autumn have higher survival rate. Futrhermore, it is better to seed C. korshinskii on overcast slope; (3) S. koryanagi Kilimara is best to be planted with stock, buried 2?cm. Suitable models are: stock planting and buried 2?cm on adret, stock planting on overcast slope with surface level, stock planting and buried 2?cm on overcast slope; (4) soil preparation, planting depth have much effects on growth, and afforestation method, slope aspect, and the planting depth effects survival rates and growth significantly.