Welcome to Bulletin of Botanical Research! Today is Share:

Bulletin of Botanical Research ›› 2019, Vol. 39 ›› Issue (6): 863-868.doi: 10.7525/j.issn.1673-5102.2019.06.008

Previous Articles     Next Articles

Effects of Different Planting Densities on Cultivating Quality of Padus maackii Seedlings

LIU Ting-Yan1, HAO Long-Fei1, WANG Qing-Cheng2, BAI Shu-Lan1   

  1. 1. College of Forestry, Inner Mongolia Agricultural University, Hohhot 010019;
    2. College of Forestry, Northeast Forestry University, Harbin 150040
  • Received:2019-05-09 Online:2019-11-05 Published:2019-11-16
  • Supported by:
    Higher Education Institutions Scientific Research Foundation of Inner Mongolia(NJZY18053);High-level Talent Introduction Research Foundation of Inner Mongolia Agricultural University(NDYB2016-18);Science Foundation for Young Scholars in the College of Forestry of Inner Mongolia Agricultural University;The China Postdoctoral Science Foundation(2018M643778XB);National key research and development program Foundation(2017YFD0600903-3)

Abstract: We studied the growth and nutrient content of the one-year-old Padus maackii seedlings, which provided a theoretical basis for the field cultivation. The morphology, biomass, photosynthetic rate and nutrient content of the seedlings were determined under four planting densities, including 60, 80, 100 and 120 ind.·m-2. (1)The biomass was affected significantly in different planting densities. The order of leaf, stem and root biomass of P.maackii seedlings in different planting densities were 80 > 60 > 100 > 120 ind.·m-2, respectively. The quality index of P.maackii seedlings at the density of 60 and 80 ind·m-2 were significantly higher than that at the density of 100 and 120 ind.·m-2. (2)The number of lateral roots were affected significantly under different density treatments, which was maximum at the density of 80 ind.·m-2. (3)The nutrient content of N, P, K were highest under 80 ind.·m-2 density treatment, and were significantly higher than that in other treatments. (4)The seedling quality indexes were significantly positively correlated with the leaf biomass, root biomass and lateral root number(P<0.1), but were not correlated with the taproot length and photosynthetic rate(P>0.1). Thus the optimal seedling density of one-year-old P.maackii was 80 ind.·m-2, and the leaf biomass, lateral root number and root biomass of P.maackii were affected significantly by planting densities, then affected the seedling quality.

Key words: Padus maackii, seedling density, biomass, photosynthesis, nutrient content

CLC Number: