石漠化地区基岩裸露、砾石堆积，水土流失严重，土壤与植被覆盖率低，因此引发一系列的生态恶化问题，而客土恢复植被是一项快速有效的治理途径。本试验在贵州毕节地区实施，以当地黄壤客土（T1，黄壤与砾石比为1∶1；T2，黄壤与砾石比为2∶1；T3，黄壤与砾石比为3∶1；T4，黄壤与砾石比为1∶0）改良石漠化，从耐瘠薄的灌木——沙棘（Hippophae rhamnoides）为试材，探究其幼苗在客土改良后的石漠化土壤中的适应性，栽种期为2年。结果表明：客土处理对沙棘幼苗的冠幅、粗根的根长密度、粗根根重密度均无显著影响；百分之百客土即T4会显著抑制沙棘株高、根系生物量，显著促进细根比根长的增长；当黄壤与砾石比例1/2—2/3时，2年后沙棘细根的根重密度与土壤含水量均会显著增加；当黄壤与砾石比大于2/3时会显著抑制沙棘根系长度总和的增加，且2年后对土壤水分改善作用不显著；沙棘根系指标与2年后的土壤含水量呈现出显著的相关关系。在贵州毕节地区客土改良石漠化时，并非客土越多越好，当黄壤与砾石的比例在1/2—2/3时，栽种沙棘2年可显著改善土壤含水量。

In rocky desertification areas， the bedrock is bare， gravel is piled up， soil and water loss is serious， soil and vegetation coverage is low， which leads to a series of ecological deterioration problems.The restoration of vegetation by soil dressing is a fast and effective way.The experiment was carried out in Bijie， Guizhou province. The local yellow soil was used to soil dressing for rocky desertification. The Hippophae rhamnoides seedling which can resist the low fertility was selected as the test material. The adaptability of the H. rhamnoides seedlings on different degrees of soil dressing for rocky desertification was mainly explored in this experiment. Four treatments were set up for different degrees of soil dressing：T1 （yellow soil to gravel ratio： 1∶1）， T2 （yellow soil to gravel ratio： 2∶1）， T3 （yellow soil to gravel ratio： 3∶1） and T4 （yellow soil to gravel ratio： 1∶0）.The results showed that there was no significant effect on the crown width， root length density and root weight density under different treatments；T4 which is all of yellow soil could restrict the plant height and root biomass significantly， and promote the root length of fine root significantly.The root weight density and soil water content of the fine roots increased significantly after two years as the yellow soil and gravel ratio was between 1/2 and 2/3，while the ratio of yellow soil to gravel was more than 2/3， the total root length and the final soil water content were inhibited significantly. Person correlation analysis found that the root index was significantly correlated with the final soil water content.In conclusion， the experiment shows that the ratio of the yellow soil should be controlled when the H. rhamnoides seedlings was planted on different degrees of soil dressing for rocky desertification soil dressing in Bijie， Guizhou province. And the final soil water content which can be improved after two years under the treatment of yellow soil to gravel ratio is between 1/2 to 2/3.