山东农业科学2025，Vol.57Issue(7)：60-69,10.DOI:10.14083/j.issn.1001-4942.2025.07.008
大气CO2浓度升高对玉米‖花生种间作用和间作优势的影响
Effects of Elevated Atmospheric CO2 Concentration on Interspecific Interaction and Intercropping Advantage of Maize Intercropping with Peanut System
摘要
Abstract
To clarify the effects of elevated atmospheric CO2 concentration on the interspecific interaction and intercropping advantage of maize intercropping with peanut system(maize ‖ peanut),using atmospheric CO2 concentration[(400±50)µmol·mol-1,a-CO2]as control,the relative interspecific competition index,dry matter accumulation and distribution per plant,yield and its components and intercropping advantage of maize ‖ peanut were studied under elevated CO2 concentration[(700±50)μmol·mol-1,e-CO2]at two phos-phorus levels[0 kg·hm-2 P2O5(P0),180 kg·hm-2 P2O5(P180)].Two-year field experiments showed that under the same phosphorus application conditions,compared with a-CO2,e-CO2 increased the dry matter ac-cumulation per plant of intercropping maize and peanut,and promoted the transport of dry matter to maize grains and peanut pods.The yield of intercropping maize and peanut were significantly increased by 10.83％to 48.68％and 36.84％to 51.18％,while the intercropping advantage was significantly increased by 20.41％to 102.73％.Under the two CO2 concentrations,P180 had positive effects on the dry matter accumulation per plant and yield traits of intercropping maize and peanut.Compared with P0,the grains per ear of intercropping maize and the pod weight per plant of intercropping peanut increased significantly by 14.74％to 42.64％and 17.51％to 51.61％,respectively.The relative interspecific aggression and competition ratio of intercropping peanut in-creased by 13.79％to 45.88％and 4.17％～20.00％,respectively,and the intercropping advantage increased by 5.17％to 73.21％.In summary,elevated CO2 concentration and application of phosphorus fertilizer could coordinate the interspecific interaction of maize ‖ peanut,promote dry matter accumulation and its distribution to maize grains and peanut pods,and regulate yield traits,thereby increasing yield and intercropping advan-tage.关键词
玉米‖花生/CO2浓度/干物质积累/种间竞争/间作优势Key words
Maize intercropping with peanut/CO2 concentration/Dry matter accumulation/Interspecific competition/Intercropping advantages分类
农业科技引用本文复制引用
朱晨旭,焦念元,郑宾,王笑笑,汪江涛,孟维伟,刘涵,丁迪,刘领,付国占..大气CO2浓度升高对玉米‖花生种间作用和间作优势的影响[J].山东农业科学,2025,57(7):60-69,10.基金项目
河南省自然科学基金项目(182300410014,212300410342) （182300410014,212300410342）
