|Table of Contents|

Effects of Different Water Retention Methods on Water,Salt and Nutrients in Collapsible Loess

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年3
Page:
114-121
Research Field:
Publishing date:

Info

Title:
Effects of Different Water Retention Methods on Water,Salt and Nutrients in Collapsible Loess
Author(s):
WANG Ding1WANG Zixuan2WANG Xin1LIU Xuelu1ZHU Run1
(1.College of Resources and Environment,Gansu Agricultural University,Lanzhou,Gansu 730070;2.Gansu Desert Control Research Institute,Lanzhou,Gansu 730071)
Keywords:
collapsible loesswater retention modeloess slopeecological restoration
PACS:
S 156.99
DOI:
10.11937/bfyy.20242870
Abstract:
A field slope restoration experiment with different water retention methods (polymer water retaining agent,fermentable sawdust,mulching film) were set up for planting drought-resistant shrubs (caragana,amorpha) in the collapsible loess of Shuping town,Yongdeng county,Gansu Province,and indoor measurements were combinedand analysed.The trends of soil water and salt,available nutrients,organic matter,and the survival rate of the shrubs and other indexes were investigated,in order to provide a reference for the ecological restoration of loess slopes in Northwest China.The results showed that,under different water retention methods,the effects of mulching film and water retention agent treatment on soil moisture,available nutrients and salt inhibition were significant.Compared with the control,the water content of soil treated with film and water retaining agent was significantly increased (P<0.05) by 34.2% and 27.2%,respectively;the conductivity of soil treated with film and water retaining agent was significantly decreased (P<0.05) by 36.0% and 40.4%,respectively.Compared with the control,the soil available phosphorus content in mulching treatment was 6.44 mg·kg-1,which was increased by 70.3%,and the soil organic matter content in sawdust treatment was significantly increased by 52.5% (P<0.05).Furthermore,all three water retention methods exhibited varying degrees of improvement in the survival rates of the two shrubs compared to the control.Notably,caragana showed higher survival rates under mulching and water retaining agent treatments,with a survival rate of 90% under mulching and 75% under water retaining agent treatment.Additionally,caragana displayed superior resilience and suitability for planting in similar environments compared to amorpha.

References:

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Last Update: 2025-02-13