Abstract：
BACKGROUND: Soil is a key foundation of crop root growth. There are interactions between root system and soil in multiple ways. The present study aimed to further explore the response of root distribution and morphology to soil physical and chemical environment under maize (Zea mays L.) soybean (Glycine Max L. Merr.) relay strip intercropping (MS) An experiment was carried out aiming to examine the effects of nitrogen (N) applications and interspecific distances on root system and soil environment in MS. The two N application levels, referred to as no N application (NN) and conventional N application (CN), were paired with different interspecific distances: 30, 45 and 60 cm (MS30, MS45 and MS60) and 100 cm of monoculture maize and soybean (MM/SS100).
RESULTS: The results demonstrated that MS45 increased the distribution of soil aggregates (> 2 mm) near the crop roots and maize soil nutrients status, which increased by 20.3% and 15.6%. Meanwhile, MS reduced soil bulk density, increased soil porosity and improved soil oxygen content. Optimization of the soil environment facilitated root growth. The MS45 achieved a better result on root distribution and morphology than the other configuration and also increased land productivity.
CONCLUSIONS: Relay intercropped soybean with maize in interspecific row spacing of 45 cm, improved soil physicochemical environment, reshaped root architecture and optimized root spatial distribution of crops to achieve greater land productivity. © 2024 Society of Chemical Industry.
RESULTS: The results demonstrated that MS45 increased the distribution of soil aggregates (> 2 mm) near the crop roots and maize soil nutrients status, which increased by 20.3% and 15.6%. Meanwhile, MS reduced soil bulk density, increased soil porosity and improved soil oxygen content. Optimization of the soil environment facilitated root growth. The MS45 achieved a better result on root distribution and morphology than the other configuration and also increased land productivity.
CONCLUSIONS: Relay intercropped soybean with maize in interspecific row spacing of 45 cm, improved soil physicochemical environment, reshaped root architecture and optimized root spatial distribution of crops to achieve greater land productivity. © 2024 Society of Chemical Industry.
摘要：
背景：土壤是作物根系生长的关键基础。根系与土壤之间存在多种相互作用。本研究旨在进一步探讨玉米（ZeamaysL.）大豆（GlycineMaxL.Merr）下根系分布和形态对土壤理化环境的响应。）中继带状间作（MS）进行了一项实验，旨在研究氮（N）的施用和种间距离对MS的根系和土壤环境的影响。这两个N个应用级别，称为无N应用(NN)和常规N应用(CN)，与不同的种间距离配对：30、45和60厘米（MS30，MS45和MS60）和100厘米的单作玉米和大豆（MM/SS100）。
结果：结果表明，MS45增加了作物根部附近土壤团聚体（>2mm）的分布和玉米土壤养分状况，分别增长20.3%和15.6%。同时,MS降低了土壤容重，增加了土壤孔隙度，提高了土壤含氧量。土壤环境的优化促进了根系的生长。与其他配置相比，MS45在根系分布和形态上取得了更好的结果，并且还提高了土地生产力。
结论：继代大豆与玉米的种间行距为45厘米，改善土壤理化环境，重塑根系结构，优化作物根系空间分布，实现更大的土地生产力。©2024化学工业学会。
结果：结果表明，MS45增加了作物根部附近土壤团聚体（>2mm）的分布和玉米土壤养分状况，分别增长20.3%和15.6%。同时,MS降低了土壤容重，增加了土壤孔隙度，提高了土壤含氧量。土壤环境的优化促进了根系的生长。与其他配置相比，MS45在根系分布和形态上取得了更好的结果，并且还提高了土地生产力。
结论：继代大豆与玉米的种间行距为45厘米，改善土壤理化环境，重塑根系结构，优化作物根系空间分布，实现更大的土地生产力。©2024化学工业学会。
