【摘要】 为探索适合沈阳地区的复种模式,采用灰色关联分析法,对三种新型种植模式(M1:覆膜鲜食玉米复种青贮玉米;M2:小麦复种青贮玉米;M3:马铃薯复种青贮玉米)的物质生产及资源利用效率等进行了分析评价。结果表明:三种复种模式的作物生产力、气候资源生产效率、能量效益、经济效益、综合效益等均明显高于一季春玉米(CK)。其中,马铃薯复种青贮玉米纯效益最高,为25 462元/hm2,较一季春玉米提高136%;覆膜鲜食玉米复种青贮玉米和小麦复种青贮玉米纯效益分别为22 993元/hm2和14 216元/hm2,较一季春玉米分别提高113%和32%。更多还原

【Abstract】 To find a suitable multiple cropping pattern for Shenyang area,matter production and resources use efficiency of three multiple cropping patterns was analyzed by the grey correlation analysis method.The results showed that the crop productivity,climate production efficiency,energy benefit,economic benefit and comprehensive benefit of the three multiple cropping patterns were obviously bigger than those of single spring maize system.The pure benefit of potato-silage corn was 25 462 Yuan/hm2,which was 136% higher than that of single spring maize system;And the pure benefits of fresh food corn-silage corn and wheat-silage corn were respectively 22 993 Yuan/hm2 and 14 216 Yuan/hm2,which were respectively 113% and 32% higher than that of single spring maize system.更多还原