灌溉排水学报2026，Vol.45Issue(7)：60-69,10.DOI:10.13522/j.cnki.ggps.2026060
滨海盐碱地玉米绿豆带状种植对土壤水盐与作物水分利用效率的影响
Effects of maize and mung bean intercropping on soil water-salt dynamics and crop water use efficiency in coastal saline-alkali soil
摘要
Abstract
[Objective]Intercropping is an anomic practice that could mitigate the adverse effects of salinity on crops cultivated in coastal saline-alkali soil,yet its effect on water-salt regulation and crop growth remains unclear.This paper investigates the effects of maize-mung bean intercropping on soil water and salt distribution,growth and water use efficiency(WUE)of the crops in a coastal saline-alkali soil.[Method]A two-year field experiment was conducted from 2022 to 2023 in a coastal saline-alkali area in Tianjin.It consisted of three treatments:monocultured maize(T1),monocultured mung bean(T2),and maize-mung bean intercropping(T12).During the experiment,we measured the spatiotemporal changes in soil water content,soil electrical conductivity(ECe),agronomic traits and grain yields of the crops,land equivalent ratio(LER),and WUE for each treatment.[Result]Compared with monoculture,intercropping not only significantly increased maize plant height by 3.4%and 12.7%in 2022 and 2023,respectively,but also markedly increased its stem diameter,with no significant effect on ear length.In contrast,plant height and stem diameter of the intercropped and monocultured mung bean showed no significant difference.Compared with monoculture,intercropping increased the 1 000-grain weight of maize by 13.98%in 2022 and had no significant effect in 2023.The land equivalent ratio(LER)of the intercropping system was 1.43 in 2022 and 1.68 in 2023.At the same soil depth,soil water content in the mung bean strips was higher than that in the maize strips,and soil water content in the topsoil(0-40 cm)was lower than that in the subsoil(40-100 cm).Throughout the crop growth period,topsoil water content increased while its ECe declined,compared with their pre-planting values.[Conclusion]Maize-mung bean intercropping can effectively optimize the spatial distribution of soil water and salt to facilitate maize growth,and improve its water use efficiency in coastal saline-alkali soils.It can thus be adopted as an improved agronomic practice for maize and mung bean production in coastal saline-alkali soils.关键词
滨海盐碱地/间作/土壤水盐/水分利用效率/土地当量比Key words
coastal saline-alkali soil/intercropping/soil water and salt/water use efficiency/land equivalent ratio分类
农业科技引用本文复制引用
盖少阳,薛铸,张凯,申孝军,刘宏权,高惠嫣..滨海盐碱地玉米绿豆带状种植对土壤水盐与作物水分利用效率的影响[J].灌溉排水学报,2026,45(7):60-69,10.基金项目
河北省重点研发计划项目(22327001D) （22327001D）
国家现代农业产业技术体系-食用豆(CARS-08-G-22) （CARS-08-G-22）
现代都市农业智慧灌溉技术项目(XB202016) （XB202016）
