Response of Rosa rugosa Seedling Roots to Space Spatial Heterogeneous of Soil Water and Nutrient(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2013年02期

Page:

162-165

Research Field:

Publishing date:

Info

Title:

Response of Rosa rugosa Seedling Roots to Space Spatial Heterogeneous of Soil Water and Nutrient

Author(s):

SUN Yue-bo¹; ZHAO Cong-kai¹; ZHAO Lan-yong²

1. Department of Landscape Engineering,Weifang Vocational College，Weifang，Shandong 261031；

2.College of Forestry，Shandong Agricultural University，Tai’an，Shandong 271018

Keywords:

Rosa rugosa; root architecture; water; nutrient; space spatial heterogeneous

PACS:

S 685.12

DOI:

-

Abstract:

Taking the seedling of Rosa rugosa as test materials,the medium culture was used,the effect of heterogeneous nutrient and water on root architecture，root mass distribution，top mass，R/S，fine root diameter and SRL in greenhouse were studied.The results showed that the root of Rosa rugosa was responded sensitively to water and nutrient heterogeneity，growth and distribution of root were affected obviously by space heterogeneity；growth quantity of up ground parts，total root and R/S treated in water and fertilizer heterogeneity were less than in homogeneity，and the R/S was reduced；roots grew quickly and total growth quantity was added clearly in fertilizer and irrigated area，and the growth were restrained in no nutrient and water area.Compared with the no fertilizer area，the diameter of fine root decreased and increased SRL,which were beneficial for absorbing and transporting of nutrient and water，in the no irrigation area，though diameter of fine root decreased，but the low SRL reduced the ability of absorbing water，reduced the total quantity of growth and then were bad to rose growing.Rose growing affected by water heterogeneity was more obviously than that by fertilizer heterogeneity.

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