在坚实地质岩层瘠薄的石砾土上,只有充分调节表层径流,增加土壤水分,才可能有利于造林。为此,1975～1980年在克里米亚东南沿海的低山区,10°～25°的山坡上进行了研究。地质构造多半是含粘土的页岩及砂岩间层,几乎没有保护植被。年降水量240～350毫米,70％集中在寒冷期。处理石砾山坡造林的试验及调节表层径 On the barren rock and gravel soil with solid geological formations, afforestation can only be facilitated by adequate regulation of surface runoff and increased soil moisture. For this reason, from 1975 to 1980, a study was conducted on the slopes from 10 ° to 25 ° in the low mountainous area of ​​southeast coast of Crimea. Most of the geological structure is clay-containing shale and sandstone, almost no protection of vegetation. Annual rainfall of 240 to 350 mm, 70% concentrated in the cold period. Treatment of gravel hillside afforestation experiment and adjustment of surface