|Table of Contents|

Effects of Super Absorbent Polymers on Root Growth and Enzyme Activity in Rhizosphere Soil of Sophora davidii Seedlings in Panjiang

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年16
Page:
92-97
Research Field:
Publishing date:

Info

Title:
Effects of Super Absorbent Polymers on Root Growth and Enzyme Activity in Rhizosphere Soil of Sophora davidii Seedlings in Panjiang
Author(s):
ZHANG Yujun1WANG Puchang1SHANG Yishun1ZHANG Wen1ZOU Chao2DING Leilei1
(1.Guizhou Institute of Prataculture,Guizhou Academy of Agricultural Sciences,Guiyang,Guizhou 550006;2.College of Animal Science,Guizhou University,Guiyang,Guizhou 550025)
Keywords:
super absorbent polymersSophora davidiiroot growthsoil enzyme activity
PACS:
-
DOI:
10.11937/bfyy.20194197
Abstract:
Sophora davidii of Panjiang was taken as material,the effects of 0%,0.5%,1.0%,2.0% and 3.0% potassium salt-type super absorbent polymers,wote super absorbent and Agroforestry drought-resistant super absorbent polymers on the root growth,root exudate content and soil enzyme activity of Sophora davidii seedlings were investigated,respectively,using pot experiments.The results showed that the root length,root surface area and root volume of Sophora davidii seedlings increased effectively by applying the three different super absorbent polymers under drought stress.The effects of all the super absorbent polymers were significantly stronger than those of CK,showing a concentration-dependent manner (P<0.05).The average root diameter of Sophora davidii seedlings increased gradually with the increase in the concentration of the three super absorbent polymers.However,only when the concentration was 2.0%,3.0% and the concentration of wote super absorbent was 1.0%,average root diameter was significantly higher than that under CK (P<0.05).No significant differences were found in average root diameter between the other treatments and CK (P>0.05).The root activity of Sophora davidii seedlings was significantly higher than that under CK when the concentration of the three different super absorbent polymers was 0.5%,but then gradually decreased with the increase in concentration.The application of super absorbent polymers promoted the increase in root exudate content of Sophora davidii,and the application amount had a significantly positive linear correlation with the content of the three exudates.The activities of dehydrogenase,polyphenol oxidase and sucrose under super absorbent polymers treatment were significantly higher than those under CK,urease activity was significantly higher than that under CK only when the concentration of super absorbent polymer was 0.5% and 1.0% and the concentration of agricultural and forestry drought-resistant super absorbent polymer was 2.0% (P<0.05).There were no significant differences between other treatments and the control.Under drought,the application of wote super absorbent was more beneficial to the root growth,increased in root exudates and the improvement in soil enzyme activity of Sophora davidii.

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Last Update: 2020-11-23