Straw interlayer improves sunflower root growth:Evidence from moisture and salt migration and the microbial community in saline-alkali soil

扫码查看

原文链接

国家科技期刊平台
NETL
NSTL
万方数据

外文摘要：A straw interlayer added to soil can effectively reduce soil salinity effects on plant growth,however,the effects of soil moisture,salt and microbial community composition on plant growth under a straw interlayer are unclear.A rhizobox study was conducted to investigate the role of straw interlayer thickness on soil moisture,salt migration,microbial community composition,as well as root growth in sunflower.The study included four treatments:Control(no straw interlayer);S3(straw interlayer of 3.0 cm);S5(straw interlayer of 5.0 cm);S7(straw interlayer of 7.0 cm).Straw interlayer treatments increased soil moisture by 8.2-11.0%after irrigation and decreased soil salt content after the bud stage in 0-40 cm soil.Total root length,total root surface area,average root diameter,total root volume and the number of root tips of sunflower plants were higher under straw interlayer treatments than in the control,and were the highest under the S5 treatment.This stimulated root growth was ascribed to the higher abundance of Chloroflexi and Verrucomicrobia bacteria in soil with a straw interlayer,which was increased by 55.7 and 54.7%,respectively,in the S5 treatment.Addition of a straw interlayer of 5 cm thickness is a practical and environmentally feasible approach for improving sunflower root growth in saline-alkali soil.

外文关键词：

saline-alkali soilrhizoboxsoil watersoil salt contentbacterial community

作者：

Mengmeng Chen、Guoli Wang、Yupeng Jing、Jie Zhou、Jiashen Song、Fangdi Chang、Ru Yu、Jing Wang、Weini Wang、Xia Sun、Hongyuan Zhang、Yuyi Li

展开 >

作者单位：

State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China

Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China

College of Agriculture,Nanjing Agricultural University,Nanjing 210095,China

Ordos Agriculture and Animal Husbandry Ecology and Resource Protection Center,Ordos 017001,China

展开 >

基金：

National Natural Science Foundation of ChinaAgricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciencesearmarked fund for China Agriculture Research SystemInner Mongolia Autonomous Region Research Project of ChinaInner Mongolia Autonomous Region Research Project of ChinaNational Key Scientific Research Project of ChinaOrdos Science and Technology Major Project,China

项目编号：

U23A2054CAAS-ZDRW202201CARS-02-24NMKJXM202303-032021EEDSCXSFQZD011-032023YFD200140401ZD20232320

出版年：

2024

DOI：

10.1016/j.jia.2024.03.048

农业科学学报(英文)

中国农业科学院农业信息研究所

农业科学学报(英文)

CSTPCD

影响因子：0.576

ISSN：2095-3119

年,卷(期)：2024.23(11)