中国生态农业学报（中英文）2026，Vol.34Issue(5)：956-965,10.DOI:10.12357/cjea.20250250
硝态氮/铵态氮配比对小麦||蚕豆间作体系种间竞争和补偿的影响
Effects of nitrate/ammonium nitrogen ratios on the interspecific competition and complementarity in wheat-faba bean intercropping systems
摘要
Abstract
It is of great significance to investigate the competition relationships and complementarity effects among crops in intercropping systems under different nitrate/ammonium nitrogen ratios,which is important for elucidating the mechanisms driving system stability and guiding rational fertilization practices.Taking wheat(Triticum aestivum)-faba bean(Vicia faba)intercropping systems as subjects,this study designed different nitrate/ammonium nitrogen ratios:4∶0(N1),3∶1(N2),2∶2(N3),1∶3(N4),and 0∶4(N5).The crop yields and biomass under monoculture and intercropping conditions were measured,and the land equivalent ratio,root/shoot ratio,aggressivity(AWF),relative intensity of impact(RII),net effect(NE),compensatory effect(CE),and selection effect(SE)of intercropping were calculated to determine the effects of different nitrate/ammonium nitrogen ratios on interspecific competition and complementarity.The results showed that the land equivalent ratio of intercropping was greater than 1 under different treatment conditions.Among different treatments,N2 had the largest partial land equivalent ratio of faba bean.There were no significant difference in the aboveground or underground biomass of wheat in monoculture and intercropping under conditions N1 to N5.Among all the treatments,the AWF of wheat was all greater than 1 and the greatest was under N2.Compared with other treatments,N2 increased the RII of wheat by 1.4-6.3 times(P<0.05).The CE of each intercropping system was greater than 0 and reached the maximum value under N2,and the SE of each intercropping system was less than 0.The AWF and RII of wheat were obviously stronger than those of faba bean in wheat-faba bean intercropping systems.The RII of wheat and partial land equivalent ratio of faba bean had positive correlations with CE in the intercropping systems.In conclusion,different nitrate/ammonium nitrogen ratios affect the interspecific competition and complementarity in the wheat-faba bean intercropping systems,thus influencing the intercropping system yield.Treatment with a nitrate/ammonium nitrogen ratio of 3∶1(N2)has the most significant interspecific competition and complementory effect.关键词
硝态氮/铵态氮/间作/种间竞争/补偿效应/选择效应Key words
nitrate nitrogen/ammonium nitrogen/intercropping/interspecific competition/compensatory effect/selection effect分类
农业科技引用本文复制引用
谢秀婷,严跃党,戴利利,程霞,刘英超..硝态氮/铵态氮配比对小麦||蚕豆间作体系种间竞争和补偿的影响[J].中国生态农业学报（中英文）,2026,34(5):956-965,10.基金项目
云南省地方本科高校基础研究联合专项项目(202101BA070001-235,2019FH001-056)资助 This study was supported by the Joint Special Project for Basic Research of Local Undergraduate Universities in Yunnan Province(202101BA070001-235,2019FH001-056). （202101BA070001-235,2019FH001-056）
