沈阳农业大学学报2025，Vol.56Issue(4)：56-65,10.DOI:10.3969/j.issn.1000-1700.2025.04.006
辽西北风沙区林农复合模式对土壤质量的影响
Effects of Agroforestry Models on Soil Quality in the Windy and Sandy Areas of Northwest Liaoning
摘要
Abstract
[Objective]Taking the typical agroforestry models in the wind-sandy area of northwest Liaoning as the research objects,to explore their effects on soil physical properties,nutrients and soil quality,which would be provide references for the selection and management of agroforestry models and improving soil quality in this area.[Method]Three typical agroforestry models in the sandy and wind-stricken area of northwest Liaoning Province were selected,including the scotch pine-peanut model,the poplar-peanut model,and the mulberry-peanut model,and the traditional farming model-peanut farmland was used as a control.Their soil physical properties and nutrients were analyzed,and finally the soil quality index were used to comprehensively evaluated soil quality.[Results]For soil physical properties,soil moisture content and porosity of the three agroforestry models were all higher than those of the peanut farmland.Conversely,soil bulk density was highest in the peanut farmland,with value of 1.56 g·cm-3.Soil pH under the four different modes was acidic,and the mulberry-peanut complex mode was the highest value of 6.46.Soil was mainly composed of sandy particles and the mulberry-peanut model has the lowest sand particle content of 70.18%,which was significantly lower than the traditional peanut farmland(P<0.05).For soil nutrients,the organic carbon contents of the three agroforestry models were all higher than that of the peanut farmland,and the mulberry-peanut model was the highest increment at 111.65%,followed by the scotch pine-peanut model at 71.64%,and then the poplar-peanut model at 57.54%.In addition,the soil nutrient contents of the three agroforestry models,including total nitrogen,total phosphorus,ammonia nitrogen and nitrate nitrogen,were all higher than those in peanut farmland and with the highest values of the mulberry tree-peanut model.For soil quality based on the comprehensive indicators of soil physical properties and nutrients,it could be known that soil quality of the three agroforestry models were higher than the traditional peanut farmland,and with the soil quality index(SQI)decreased sequences of 0.75>0.59>0.51>0.23 of the linear model(SQI-L),0.58>0.52>0.47>0.38 of the nonlinear model(SQI-NL)for the mulberry-peanut model,scotch pine-peanut model,poplar-peanut model and peanut farmland,respectively.[Conclusion]The agroforestry model improved soil quality significantly in the wind-sandy semi-arid area of northwestern Liaoning,and the mulberry-peanut model has the highest values,which provides a scientific reference for the selection of the agroforestry model and soil management in this area in the future.关键词
辽西北/风沙区/林农复合/土壤结构/土壤质量Key words
Northwest Liaoning/windy and sandy area/agroforestry/soil structure/soil quality分类
农业科技引用本文复制引用
刘丽颖,魏亚伟,张梦,谷薇薇,许鹏,董英豪,王玲,赵实,王红博,李想..辽西北风沙区林农复合模式对土壤质量的影响[J].沈阳农业大学学报,2025,56(4):56-65,10.基金项目
国家重点研发计划项目(2024YFD1501403) （2024YFD1501403）
国家林业和草原局林草科技创新平台项目(LLC20245) （LLC20245）
