干旱地区农业研究2025，Vol.43Issue(5)：129-137,9.DOI:10.7606/j.issn.1000-7601.2025.05.13
西北旱区基于玉米的间套复种多样化种植模式效率评价
Efficiency assessment of maize-based diversified cropping systems,including intercropping,relay cropping,and multiple cropping in Northwest China arid regions
摘要
Abstract
A field experiment was conducted in 2024 at Jingtan Village,Beitan Town,Jingyuan County,Baiyin City,Gansu Province,to evaluate the impact of diversified cropping systems on maize production efficiency and land utilization.Four treatments were established:T1(maize monoculture),T2(maize-soybean intercrop-ping),T3(maize-pea relay cropping then multiple cropping baby Chinese cabbage),and T4(maize-wheat relay cropping then multiple cropping green manure).The results showed that diversified systems(T2～T4)exhibited land equivalent ratio(LER)exceeding 1.Compared with monoculture(T1),maize net area yield significantly in-creased by 49.09％to 79.98％,with T3 achieving the highest yield(33 751.74 kg·hm-2).Treatment T2 exhibited optimal maize plant height and leaf area across all growth stages and recorded the highest water use effi-ciency(WUE,46.24 kg·hm-2·mm-1),representing a 64.15％improvement over T1.Cumulative relative effi-ciency(CRE)and competitiveness(CI)of maize showed a significant positive correlation with final yield.Systems T2 and T3 demonstrated higher cumulative relative efficiency during early growth stages,establishing the foundation for subsequent high yield.Treatment T4 displayed superior maize yield stability and sustainability,with sustainable yield index(SYI)and stability of maize yield(SY)values of 0.46 and 0.45,respectively.In conclusion,diversi-fied cropping systems significantly enhance land use efficiency and maize yield.The maize-wheat relay cropping then multiple cropping green manure system(T4)demonstrated optimal integrated performance,representing a suitable diversified cropping pattern for Northwest China arid regions.关键词
玉米/多样化种植/产量稳定性/种间竞争/土地利用/西北旱区Key words
maize/diversified cropping/stability of maize yield/interspecific competition/land use/North-west China arid regions分类
农业科技引用本文复制引用
史多鹏,张立勤,崔云玲,孙和折..西北旱区基于玉米的间套复种多样化种植模式效率评价[J].干旱地区农业研究,2025,43(5):129-137,9.基金项目
国家重点研发计划项目"产能提升和资源高效利用的作物多样化体系设计与模式构建"(2022YFD1900202) （2022YFD1900202）
