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Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (10): 61-69.doi: 10.11924/j.issn.1000-6850.casb2021-1008

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The Investigation and Analysis of Hemerocallis Application Around Datong Ancient City Wall

LIU Changsheng(), WANG Jinyao, LI Sen, XING Guoming   

  1. College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi 030800
  • Received:2021-10-25 Revised:2022-02-15 Online:2022-04-05 Published:2022-05-23

Abstract:

The paper investigated the application and planting design of Hemerocallis in the linear green space around Datong ancient city wall, recorded the species, planting area, patch shape, planting pattern and application form, and carried out the analysis from the aspects of planting design species, application frequency, ornamental characteristics, planting methods and community structure. There were 68 patch plots for Hemerocallis application, covering 19808 m2, and the Hemerocallis planting area was 16883 m2, wherein, ‘Datong’ daylily had the largest planting area, and H. lilioasphodelus, H. middendorffi, H. fulva ‘Golden Doll’ and H. ‘Batimore orioie’ had relatively small planting area. Flower border was the main form in Hemerocallis application, and its planting patterns were mainly the bunch planting and group planting. There were 58 kinds of landscape trees, hedgerow plants and herbaceous ground cover plants in the planting design with Hemerocallis, and the top ten plants with high application frequency were Pinus tabulaeformis, Sabina procumbens, Prunus armeniaca, Prunus davidiana, Crataegus pinnatifida, Syringa chinensis, Ligustrum obtusifolium, Euonymus bungeanus, Hylotelephium erythrostictum and Sedum aizoon. As to the ornamental features of plants, the ornamental seasons were spring, summer and autumn, and the ornamental parts were flower> leaf> fruit> trunk; for the main color system, it was mainly red, green and yellow in spring, summer and autumn, respectively. There were 2-layer, 3-layer and 4-layer vertical structure of Hemerocallis applied plant community, and the most common two were the 3-layer ‘tree- shrub- herb’ and the 4-layer ‘tree- shrub- dwarf shrub- herb’, the plant community was natural and rich. The diversity analysis of green patch plants of Hemerocallis indicated that the sequence of species richness, Simpson index and Shannon-Wiener index were shrub layer> tree layer> herbaceous layer, and the Pielou index was tree layer> shrub layer> herbaceous layer. It is suggested to increase the species and applied quantity of Hemerocallis and evergreen plants in the planting design, and to enhance the cultural brand effect of Datong daylily.

Key words: Hemerocallis, Datong ancient city wall, planting design, investigation and analysis, linear green space, green patches

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