The palaeontological material process that Guizhou is one of the origins for Guizhoulacquer trees and it has a long history of production cultivation and utilization.
古生物资料证明，贵州是我国漆树起源中心地之一，且生产、栽培、利用历史悠久。
The condition of distribution and utilization of the trees is presented in this paper.
此外还介绍了这些树种的分布与利用情况。
The results show that the main causes of small-old trees are the soil water deficiency, the low water utilization rate and the low fertility in soil.
研究结果表明，形成小老树的主要原因是土壤水分亏缺、水分利用率低和土壤肥力不足。
应用推荐