<正>采用实验生态学的方法对6种不同岩性发育的土壤对皂荚生长的影响进行了研究，结果表明：皂英在灰质白云岩发育的土壤中生长状况最好，第3年树高可达209.3cm，最差为石英砂岩发育的土壤中情况，树高仅100.6cm，并且这种差异随时间越长越明显；地茎的生长与高生长规律一致，但变化幅度没有高生长的大；高、径生长的差异也反映在生物量上有差异，3年生皂荚的生物量，以灰质白云岩发育的土壤中最大为382.61g，石英砂岩发育的土壤中情况最差，生物量仅为170.69g。这一结果可指导黔中喀斯特地区进行森林植被恢复及树种选择。

The correlation between the spatial distribution of soil nutrient around broad-leaved trees and the growth of Phyllostachys edulis was studied in Longyou county and Miaoshanwu Protective Zone of Zhejiang province. The results showed that the obvious differences of the mean DBH of all bamboo and new culms and the number of new culms existed in the different annular zone around the trees and in whole stand. The growth of Ph. increased with the distance from the broad-leaved trees. It also showed that the clear differences of soil nutrients were coincident with the distribution differences of Phyllostachys edulis in the different annular zones around the same tree. The mean DBH of new culms increased with the higher content of soil nutrient. The evident differences of soil nutrients were seen in the same annular zones of different broad-leaved trees. Except the organic phosphorus, all of the soil nutrient factors reached the obvious level (p<0.05) or best obvious level (p<0.01). The grey correlation analysis between the mean DBH of new culms and soil nutrient around trees showed that the influence order of soil nutrients on new culms was total phosphorus, soluble nitrogen, total nitrogen, soluble phosphorus, organic carbon, soluble kalium. The analysis also showed that the relationship between the mean DBH of new culms and all soil nutrients was obvious (p<0.05).