Gray system theory based analysis of hard branch cuttage of Salix oritrepha in alpine area
The relational grades of 5 hard branch cuttage treatments and 8 observing indicators of Salix oritrepha were conducted with relational grade analysis method. The results showed that the relational degrees among observing indicators of S. oritrepha cuttage with hard branch was survival rate＞root length＞stem diameter＞height＞number of first class branch＞fresh weight of aboveground biomass＞number of lateral root. The order of relational degree of 5 treatments was plastic mulch＞simple plastic greenhouse＞nursery bag＞seedling cup＞open field. Root length, stem diameter and height were the main indicators for the survival rate and plastic mulch treatment was the proper method for rapid propagation in alpine area.
国家科技期刊平台
NSTL
万方数据
维普
