贵州省凯里市市郊荒山，多年来一直大面积栽植侧柏。侧柏虽终年绿荫，适应当地钙质土 ，但因土层普遍较薄，长势不良，小老树居多，有的地段侧柏逐渐枯死。在这样的侧柏纯林 地，可否引入刺槐混交种植?刺槐在凯里已成为随处可见的“乡土”树种，能自播和根蘖萌 生繁殖，在贫瘠 Kaili City, Guizhou Province, suburban barren hills, has been planted a large area of ​​arborvitae. Although Arborvitae all year round, to adapt to the local calcareous soil, but generally thinner soil, poor growth, mostly small trees, and some sections of arborvitae gradually died. In this arborvitae pure woodland, the introduction of mixed planting of Robinia pseudoacacia in Carey has become a ubiquitous “native” species, self-sowing and root tillering sprout breeding, in barren