介质转换对盆栽平邑甜茶（MalushupehensisRehd）的效应

利用一年生平邑甜茶（ＭａｌｕｓｈｕｐｅｈｅｎｓｉｓＲｅｈｄ）盆栽苗进行介质转换试验，研究对植株生长发育的影响，结果表明：由粘土转入沙壤土的，植株生长量有所下降，但器官发育质量提高，尤以叶绿素含量提高显著；沙壤土转入粘土的则相反。不论何种转换，根系生长量均不及对照，但由沙壤土转入粘土的，根系比对照减少更明显，说明粘土中建造起来的根系适应性更强。

EFFECTS OF THE CHANGE OF MEDIUM ON PINGYITIANCHA (MALUS HUPEHENSIS REHD)

The effects of the change of medium on Pingyitiancha (Malus hupehensis Rehd) were studied using one-year-old potted plants as materials.The results are as follows:The development quality of organs,especially the chlorophyll con tent,was improved within the plants which were transplanted from clay to sandy loam,and the growth quantity decreased;While the plants which were fransplanted from sandy loam to clay had contrast results.The growth quantity of root decreased regardless of treatment,but the difference between the plants transplanted from sandy loam to clay and their control was greater than tha other,which indicate that the root system established within clay has beffer adaptability.