|Table of Contents|

Effects of Simulated Nitrogen Deposition on the Growth of Phoebe zhennan Seedlings

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年08
Page:
74-79
Research Field:
Publishing date:

Info

Title:
Effects of Simulated Nitrogen Deposition on the Growth of Phoebe zhennan Seedlings
Author(s):
WEI Xiandong1; SHI Fujun2; LIANG Xiaochun1; LU Haiyan2; LIU Tianquan1; WANG Linghui1
(1.College of Forestry，Guangxi University，Nanning，Guangxi 530004;2.Nangning Arboretum of Guangxi,Nangning,Guangxi 530031)
Keywords:
hoebe zhennan; nitrogen deposition; growth; moisture content; comprehensive evaluation
PACS:
-
DOI:
10.11937/bfyy.20192402
Abstract:
Taking the annual Phoebe zhennan seedlings as the research object，artificial spraying of NH4NO3 in the form of NH4NO3 using indoor simulation methods was conducted at 0，5.7，11.4，19.0，38.0 g? m-2? a-1，respectively labeled as control(CK)，T1，T2，T3，T4，to study the effects of nitrogen deposition on the growth of Phoebe zhennan seedlings and comprehensive evaluation analysis，with a view to providing theoretical basis for the seedling and production of Phoebe zhennan.The results showed that the plant height，ground diameter，leaf area，root，stem，leaf dry weight and total biomass of Phoebe zhennan showed an increasing trend followed by a decreasing trend with the increase of nitrogen concentration T3>T4>T2>T1>CK,the specific leaf weight and root to shoot ratio showed a trend of decreasing first and then increasing.The specific leaf weight was ranked as CK>T4>T1>T3>T2，and the root to shoot ratio was ranked as CK>T2>T4>T1>T3.There were differences in each treatment group significantly，the dry matter distribution ratio and water content of roots，stems，and leaves were highest under T3 treatment except for roots;the total root length，the number of root tips，the root surface area，the total projected area，the total root volume，and the average diameter all increased first and then decreased，and the treatment groups were significantly different.In the quality evaluation of seedlings，the quality of seedlings under T3 treatment was the best，followed by T4.In summary，the growth indexes under different nitrogen concentrations were significantly different，and all grew best under T3(19.0 g? m-2? a-1) treatment.

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Last Update: 2020-07-08