中国农学通报2025，Vol.41Issue(23)：17-24,8.
重庆中山区域玉米-大豆带状复合种植玉米品种筛选
Screening of Maize Varieties for Maize-soybean Strip Compound Planting in Zhongshan Region of Chongqing
摘要
Abstract
This study aimed to identify suitable maize varieties for maize-soybean strip intercropping promotion in the hilly areas of Chongqing.Using 24 maize varieties and the soybean variety'Yudou 11'as experimental materials,with a 4:2 row ratio configuration of soybean to maize,the agronomic traits,yield and component traits of different maize varieties were compared,as well as the yield and component traits of soybeans under maize-soybean strip composite planting.The results revealed significant variations in maize plant characteristics under the intercropping system,with coefficient of variation(CV)reaching 74.13%for barren plants and over 100%for lodging rate,indicating substantial genotypic differences.Grain yield showed significant positive correlations with ear diameter,kernels per row,100-kernel weight,bulk density and kernel length(P<0.05),while demonstrating highly significant negative correlations with barren plant rate and a significant negative correlations with ear tip barrenness.Path analysis showed the direct path coefficient for grain yield in ear length(0.484),kernel rows per ear(0.272),and 100-kernel weight(0.334)had direct positive effects on grain yield.The yield of'Xianyu 1171','Keda 202','Jindan 9','Sanxiayu 23'and'Jingyu 719'in all aspects of the performance was better,which were 10790.65 kg/hm2,10034.5 kg/hm2,9780.23 kg/hm2,9595.40 kg/hm2 and 9442.72 kg/hm2,respectively,with an increase of 45.31%,35.13%,31.7%,28.73%and 26.54%,respectively compared to the control.Significant differences were observed in the yield and yield components of'Yudou 11'when intercropped with different maize varieties.Except for'Jingyu 719'(618.84 kg/hm2),soybean yields intercropped with other maize varieties showed reductions compared to the control.Among them,the reductions in soybean yield were relatively lower when intercropped with'Xida 889','Xianyu 1171','Yudan 32','Aiheyu 058','Rongyufengzan',and'Sanxiayu 23',with reductions of 2.86%,6.41%,7.09%,7.15%,8.54%,and 8.7%,respectively.Comprehensive analysis identified'Xianyu 1171','Sanxiayu 23',and'Jingyu 719'as optimal varieties,which demonstrated superior agronomic performance,higher maize yields,and minimal negative impacts on soybean productivity,and making them suitable for maize-soybean strip intercropping systems in Chongqing's hilly regions.关键词
重庆中山区域/玉米-大豆带状复合种植/玉米/大豆/产量/品种筛选Key words
Zhongshan area of Chongqing/corn-soybean strip compound planting/corn/soybean/yield/variety screening分类
农业科技引用本文复制引用
董逸飞,冯云超,高梦洋,谭淳,向振凡,羊炼,黄美瑕,晏庆九,霍仕平..重庆中山区域玉米-大豆带状复合种植玉米品种筛选[J].中国农学通报,2025,41(23):17-24,8.基金项目
重庆市科技攻关计划项目"肥高效利用和镉低积累玉米种质创制与应用"(CSTB2022TIAD-KPX0006) （CSTB2022TIAD-KPX0006）
重庆市科企联合体项目"优质玉米资源收集利用与基因型试验示范"(2021-2025) （2021-2025）
重庆市玉米产业体系:耕作栽培功能研究室(CQMAITS2402). （CQMAITS2402）
