文献类型：期刊文献

中文题名：石墨烯添加对干旱区牧草生长及土壤养分的影响

英文题名：The effect of graphene addition on the growth of different types of grass and soil nutrients in arid areas

作者：牧仁[1,2] 乔俊[2] 徐光甫[1] 韩进夫[1] 俞潇[1] 孔垂玖[1] 李新乐[1]

第一作者：牧仁

机构：[1]中国林业科学研究院沙漠林业实验中心/内蒙古口荒漠生态系统定位观测研究站,内蒙古巴彦淖尔015200;[2]山西大同大学煤基生态碳汇技术教育部工程研究中心,山西大同037009

年份：2025

卷号：45

期号：2

起止页码：155-165

中文期刊名：中国沙漠

外文期刊名：Journal of Desert Research

收录：;北大核心:【北大核心2023】；

基金：中央引导地方科技发展资金项目(2022ZY0177);内蒙古自治区自然科学基金项目(2024MS03067)。

语种：中文

中文关键词：石墨烯;干旱区;牧草;土壤理化性质;养分利用率

外文关键词：graphene;arid areas;grass;soil physical and chemical properties;nutrient utilization rate

分类号：Q948.1;S156

摘要：石墨烯能够有效吸附土壤水分和养分离子,对干旱区土壤改良具有积极作用。为探究石墨烯对干旱区牧草生长和土壤养分的影响,对盆栽沙打旺(Astragalus adsurgens)、老芒麦(Elymus sibiricus)和披碱草(Elymus dahuricus)分别添加0(C_(0))、25(C_(1))、50(C_(2))、100(C_(3))、200 mg·L^(-1)(C_(4))石墨烯,并测定牧草种子萌发、生长指标及土壤理化性质。结果表明:(1)石墨烯添加牧草种子萌发及生长表现为C_(1)、C_(2)促进,C_(4)抑制,C_(1)下老芒麦株高和叶长较C_(0)分别增加38.81%和31.55%(P<0.05),C_(2)下沙打旺总鲜重较C_(0)显著增加51.94%(P<0.05),而披碱草发芽势C_(4)较C_(0)减少45.46%。(2)石墨烯添加可以提高土壤含水量,并对土壤养分具有一定调节作用,C_(4)下老芒麦土壤有机质和全氮含量较C_(0)分别增加22.51%和17.82%(P<0.05);沙打旺土壤碱解氮和速效钾含量在C_(4)下较C_(0)分别增加52.56%和14.99%(P<0.05);披碱草土壤碱解氮和有效磷在C_(4)、C_(1)下分别较C_(0)增加48.37%和19.58%(P<0.05)。(3)沙打旺、老芒麦和披碱草石墨烯最适添加量分别为50、25、25 mg·L^(-1)。适度石墨烯添加可以促进牧草生长,提高土壤养分利用效率,但高浓度石墨烯添加将产生抑制作用。
Graphene is a new type of carbon material.Its unique material properties enable it to effectively adsorb soil moisture and nutrient ions,which has a positive effect on soil improvement in arid areas.However,there are few studies on the application of graphene in arid areas.To investigate the effects of graphene on grass growth and soil nutrients in arid areas.Using Astragalus adsurgens,Elymus sibiricus,and Elymus dahuricus as materials,five addition levels of graphene were set(C_(0):0 mg·L^(-1),C_(1):25 mg·L^(-1),C_(2):50 mg·L^(-1),C_(3):100 mg·L^(-1),C_(4):200 mg·L^(-1)).Conduct seed germination experiments and pot experiments,and determine grass growth indicators and soil physicochemical properties.The results showed that:(1)The germination and growth of grass seeds with graphene addition showed promotion at concentrations of 25 and 50 mg·L^(-1),and inhibition at a concentration of 200 mg·L^(-1).Under C_(1)treatment,the plant height and leaf length of Elymus sibiricus increased by 38.81%and 31.55%,respectively,compared to C_(0)treatment(P<0.05),under C_(2)treatment,the total fresh weight of Astragalus adsurgens significantly increased by 51.94%(P<0.05)compared to C_(0)treatment,while under C_(4)treatment,the germination potential of Elymus dahuricus decreased by 45.46%compared to C_(0)treatment.(2)Graphene can increase soil water content and regulate soil nutrients.Under C_(4)treatment,the soil organic matter and total nitrogen content of Elymus sibiricus increased by 22.51%and 17.82%(P<0.05),respectively,compared to C_(0)treatment;The content of alkali hydrolyzed nitrogen and available potassium in the soil of Astragalus adsurgens increased by 52.56%and 14.99%(P<0.05)in C_(4)treatment compared to C_(0)treatment,respectively;The alkaline nitrogen and available phosphorus in the soil of Elymus dahuricus increased by 48.37%and 19.58%(P<0.05)in C_(4)and C_(1)treatments compared to C_(0)treatments,respectively.(3)The optimal addition amounts of graphene for Astragalus adsurgens,Elymus sibiricus,and Elymus dahuricus are 50,25,and 25 mg·L^(-1),respectively.In general,the moderation of the graphene addition can promote grass growth and improve soil nutrient utilization efficiency,but high concentration graphene addition will have an inhibitory effect on grass growth.