干旱地区农业研究2025，Vol.43Issue(3)：1-10,33,11.DOI:10.7606/j.issn.1000-7601.2025.03.01
陕西关中地区带状间作模式下夏播玉米品种筛选
Selection of maize varieties suitable for a summer-sowing soybean-maize strip intercropping system in the Guanzhong region of Shaanxi province
摘要
Abstract
To promote soybean-maize strip intercropping technology in the Guanzhong region of Shaanxi prov-ince,25 maize hybrids were evaluated in a two-row maize intercropped with three-row soybean system.Eleven maize traits,including plant height,ear height,and yield-related characteristics,were investigated and analyzed using variance analysis,correlation analysis,stepwise regression,and grey relational analysis.The aim was to iden-tify key indicators and select maize varieties suitable for the strip intercropping system.The results showed that,un-der strip intercropping mode,the genetic coefficient of variance was sequenced as 100-kernel weight(81.49%)>seed weight per ear(16.06%)>cob weight(14.31%)>ear height(12.67%)>cob diameter(5.15%)>plant height(4.23%)>rows per ear(4.01%)>ear length(2.35%);and environmental coefficient of variance was se-quenced as 100-kernel weight(15.78%)>seed weight per ear(15.31%)>cob weight(14.57%)>ear weight(10.88%)>ear length(8.66%)>rows per ear(7.70%)>plant height(7.42%)>cob diameter(5.09%).The correlation analysis indicated that,the positive significant coefficients of pearson's and partial correlation were de-tected between three pairs of seed weight per ear with 100-kernel weight,cob diameter with rows per ear,and plant height with ear height,moreover,the negative significant partial correlation was detected between plant height and rows per ear.The grey relational degrees of ten traits with seed weight per ear were listed as cob weight>100-kernel weight>kernels per row>plant height>cob diameter>rows per ear>ear diameter>ear height>ear length>bare tip length.A linear regression function of kernels per row(X6),rows per ear(X7),100-kernel weight(X9)and seed weight per ear(Y)was established by the stepwise regression analysis:Y=-149.3581+2.3552X6+5.6825X7+3.5012X9(R2=0.7975),and the path analysis indicated that 100-kernel weight(X9)had the highest direct contribution to seed weight per ear(Y),and more indirect contribution through the correlation path of 100-kernel weight(X9)and kernels per row(X6).The determination coefficient was sorted in the descender order of 100-kernel weight(X9),rows per ear(X7)and kernels per row(X6).The field evaluation should focus on 100-kernel weight,seed weight per ear,cob weight and ear height,etc.The maize varieties suitable for strip intercrop-ping should be characterized by a compact plant type,dwarf stature,low-height ears,higher 100-kernel weight,more rows per ear,and a greater number of seeds per row.Based on the grey relational analysis,four maize varie-ties of'Denghai 511','Liangyu 99','Weiyu 718',and'Denghai 618'are recommended for the strip inter-cropping system in summer-sown fields of the Guanzhong area in Shaanxi province.关键词
夏播玉米/带状间作/品种选择/灰色关联分析/关中地区Key words
summer maize/strip intercropping mode/variety selection/grey correlation analysis/Guanzhong region分类
农业科技引用本文复制引用
万其鑫,张洋,杨艺恒,杨永军,李得孝..陕西关中地区带状间作模式下夏播玉米品种筛选[J].干旱地区农业研究,2025,43(3):1-10,33,11.基金项目
陕西省重点产业创新链项目(2023-ZDLNY-10) （2023-ZDLNY-10）
国家农业农村部科技创新2030-重大项目(2023ZD04035-5-2) （2023ZD04035-5-2）
2024年陕西省重点研发计划项目 （）
2023年陕西省现代种业发展项目 （）
