首页|丛枝菌根真菌对3种水土保持草本植物生长和土壤团聚体的影响

丛枝菌根真菌对3种水土保持草本植物生长和土壤团聚体的影响

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[目的]筛选出红壤区最优水土保持草本植物与丛枝菌根真菌(Arbuscular mycorrhizal fungi，AMF)组合，提升红壤侵蚀区坡面水土流失治理水平。[方法]选择优良水土保持植物白三叶(Trifo-lium repens)、百喜草(Paspalum notatum)和雀稗(Paspalum thunbergii)在温室进行盆栽试验，设接种摩西管柄囊霉(Funneliformis mosseae)、根内根孢囊霉(Rhizophagus intraradices)及不接种(对照)3种处理，测定3种植物的AMF侵染率、地上、地下生长指标及土壤团聚体情况。[结果]接种AMF可显著促进3种植物的地上部生长，对百喜草和白三叶的促生效果显著(P<0。05);接种AMF可显著增加白三叶根长、根体积、根系分叉和根冠比数等，促进其根系生长发育;白三叶对AMF根冠比的生长响应及菌根依赖度优于另外2种植物;接种AMF显著提高了白三叶土壤水稳性团聚体含量。[结论]白三叶具有较高菌根侵染率，能与AMF共生，获得更加发达的根系和良好的长势，有效促进植被-土壤相互作用，增强调控坡面侵蚀的能力。
Effects of arbuscular mycorrhizal fungi on the growth and soil aggregates of three soil and water conservation herbs
[Objective]The screening of the combination between soil and water conversation herbs and arbuscu-lar mycorrhizal fungi(AMF)is the key to improving the control of soil erosion in red soil areas.[Method]A green-house experiment was conducted with three AMF treatments(inoculation with Funneliformis mosseae,Rhizophagus intraradices and non-inoculated control),and three plant species,Trifolium repens,Paspalum notatum and Pas-palum thunbergii.The AMF colonization rate,above-ground and belowground growth traits of the three herbs and soil aggregates were analyzed.[Result]The results showed that inoculation of AMF significantly improved the above-mentioned growth indices of T.repens,P.notatum and P.thunbergii,and exerting the most significant growth-promotion effect on P.notatum and T.repens.AMF inoculation significantly increased root length,root vol-ume,root forks and root-to-shoot ratio of T.repens,promoting the root growth and development of T.repens.The positive effect of T.repens on AMF root-cap ratio and mycorrhizal dependency was better than the other two plants.AMF inoculation significantly increased the content of water-stable aggregates in the soil of T.repens.[Conclusion]T.repens had higher rate of mycorrhizal infection,developed a more robust root system and good growth potential through symbiosis with AMF,improving soil aggregate stability.It effectively promoted vegetation and soil interac-tion,thus enhancing its ability to control slope erosion,improving red soil erosion area of slope soil,and reducing wa-ter loss from plant measures at the management level o.This could accelerates the region's ecological restoration and vegetation reconstruction.

arbuscular mycorrhizal fungiplant rootsplanting grass measuressoil aggregatesoil and water con-servation

葛佩琳、孔召玉、夏金文、刘洪光

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江西省水利科学院,江西 南昌 330029

南昌大学生命科学学院,江西 南昌 330000

南昌工程学院水利与生态工程学院,江西 南昌 330099

中国科学院水利部水土保持研究所,陕西 杨凌 712100

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AMF 植物根系 土壤团聚体 水土保持

国家自然科学基金国家自然科学基金江西省自然科学基金江西省"科技+水利"联合计划项目江西省博士后择优资助项目江西水利科技项目江西水利科技项目江西水利科技项目

418070784196701220192BAB2140072022KSG010082020KY47202223TGKT03202223TGKT042022 24ZDKT17

2024

10.13817/j.cnki.cyycp.2024.01.007

草原与草坪
中国草学会　甘肃农业大学

草原与草坪

CSTPCD
影响因子：0.686
ISSN：1009-5500
年,卷(期)：2024.44(1)
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