对紫苏不同密度条件下一些性状的变化进行了探讨。研究表明：（１）随密度槽加，单株根体积、根干重、茎叶干重、单株果数、单株粒重、单株干重呈下降趋势，且达极显著水平；分枝数减少，分枝高度、株高增加。（２）随密度增加，结实部体上移，且较集中。（３）通径分析中，对单株位生的直接效应大小依次为单株干重、分枝数、千粒重、单株根干重、每天粒数、单株果数。（４）密度与单株根体积、单株根干重、单株分枝数、单株干重的倒数呈高度正相关，单株干重与经济系数呈高度正相关，密度与单株粒重的对数呈高度负相关 The changes of some traits under different density of Perilla frutescens were discussed. The results showed that: (1) Root density, root dry weight, stem and leaf dry weight, fruit number per plant, grain weight per plant and dry weight per plant decreased with the increase of density tank; Reduce the number of branches, branch height, plant height increased. (2) As the density increased, the sturdy body moved upwards and was more concentrated. (3) In the path analysis, the direct effects on the plant per plant were as follows: dry weight per plant, branch number, 1000-grain weight, dry root weight per plant, grain number per day, fruit number per plant. (4) The density was positively correlated with the root volume per plant, dry root weight per plant, branch number per plant and reciprocal dry weight per plant. Dry weight per plant was positively correlated with economic coefficient. Heavy logarithms showed a highly negative correlation