矮壮素对唐松草生长的影响

为了解决唐松草因植株较高、易倒伏而不能在园林中得到广泛应用的问题，采用不同浓度的矮壮素(CCC)对生长旺盛期的唐松草植株进行叶面喷施，通过测量株高度、茎粗、节间长等形态指标及叶绿素含量、保护酶活性等生理指标，研究矮壮素对唐松草生长特性的影响。结果表明：随着矮壮素浓度的增加，株高呈现“低-高-低”的节律，以500 mg/L矮壮素处理的高度最低；叶绿素含量呈上升趋势，POD、SOD、CAT活性逐渐增大。但当矮壮素浓度较大时，植株叶片边缘出现灼伤、叶片变黄、翻卷等现象，影响观赏价值。综合考虑，以500 mg/L的矮壮素浓度效果较好。

Effect of CCC on the Growth of Thalictrum aquilegifolia var. sibiricum

In order to solve the problem of Thalictrum aquilegifolium var.sibiricum is not widely used in landscape because of the plant is very high and easily lodging,the author used different concentrations of CCC on vigorous growth of Thalictrum aquilegifolium var.sibiricum,by determining the height and stem diameter, length and other morphological indices and the content of chlorophyll and other related physiological indexes, studied the effect of CCC on growth of Thalictrum aquilegifolium var.sibiricum.The results showed that with the rising of the CCC concentration,the height displayed the ＇ low-height-low ＇ trend,and at 500 mg/L attain to the minimum.The content of chlorophyll showed upward trends and the activity of POD,SOD,CAT gradually increased.But when the concentration of CCC was larger,the margin of leaves turned yellow,scroll and other phenomena,affected the ornamental value.Comprehensively,the 500 mg/L of CCC concentration was better.