Study on cutting propagation technology of Lespedeza formosa f. albiflora

In order to extend the excellent clones of Lespedeza formosa f. albiflora, the effects of different naphthylacetic acid (NAA) concentrations, cuttage media, stem types, cuttage time were studied using the hard stem of L. formosa f. albiflora as test materials. The results showed that 400 mg·L-1 naphthylacetic acid (NAA) was suitable for cutting when the concentrations were between 100~400 mg·L-1; compared to perlite and peat, the optimal cuttage media was sand, the root rate could reach to 62.22%, the average root length was 7.53 cm, the average root number was 6.83, and this cutting seedlings were advantageous to improve the survival rate of late transplanting. The branch of two-age-year-old cutting could not rooted, the root rate was 0. The green branch or semi-woody branch of one-age cutting could have a better rooting effect. The cutting seedling could carried out from May to September, the best cuttage time comprehensively was in July.