|Table of Contents|

Effects of Fertilization on Growth and Pb Content of Radish Under Pb Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年10
Page:
24-32
Research Field:
Publishing date:

Info

Title:
Effects of Fertilization on Growth and Pb Content of Radish Under Pb Stress
Author(s):
WANG Hongyu; YU Bingkun; LI Yang; LI Zhongting; WANG Wenquan
(College of Resources and Environment,Xinjiang Agricultural University,Urumqi,Xinjiang 830052)
Keywords:
nitrogen fertilizer; phosphate fertilizer; Pb stress; radish
PACS:
-
DOI:
10.11937/bfyy.20214564
Abstract:
Taking radish as the test material, indoor potting and fertilizer ‘3414’ test method were adopted.The effects of different concentrations of nitrogen,phosphorus fertilizer and Pb stress on the growth and Pb absorption of radish were studied,in order to provide reference for the safe planting of radish in heavy metal polluted soil.The results showed that the application of nitrogen and phosphate fertilizer could increase the leaf length,root length,stem diameter,aboveground part and root fresh weight of radish under medium level Pb (100 mg?kg-1) stress.The application of nitrogen fertilizer had no significant effect on the absorption of Pb by radish roots,but the application of phosphate fertilizer could inhibit the absorption of Pb by radish roots,especially at medium (150 mg?kg-1) and high (225 mg?kg-1) levels,and there was no significant difference between them.Based on the relationship between crop yield and quality and safety production,the optimal application rates of nitrogen fertilizer (N) and phosphate fertilizer (P2O5) in radish planting were 287.29 mg?kg-1 and 154.49 mg?kg-1,respectively.On the basis of mediumlevel nitrogen (300 mg?kg-1) and phosphate (150 mg?kg-1) fertilizer application rates,the high-level Pb (350 mg?kg-1) treatment promoted the growth of the aboveground part of radish and inhibited the growth of the root system.With the increase of Pb concentration,the absorption of Pb by radish roots gradually increased and the difference was significant （P<0.05）,while there was no significant effect on the absorption of Pb in aboveground parts.In all fertilization treatments,the Pb content in the aboveground part of radish was higher than that in the root system,and the absorption trend of Pb was generally similar between them.

References:

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Last Update: 2022-07-04