【摘要】 为了探究带宽和大豆密度配置对大豆产量的影响,以玉米-大豆间作模式为研究对象,采用二因素裂区设计,主因素为3个带宽水平（BW₁:2.0 m、BW₂:2.2 m、BW₃:2.4 m）,副因素为4个大豆种植密度（D₁:52 500株/hm²、D₂:67 500株/hm²、D₃:82 500株/hm²、D₄:97 500株/hm²）,调查不同田间配置下的大豆光合特性、干物质积累、器官分配比率、籽粒灌浆及产量。结果表明:带宽增加有利于大豆光合特性、群体干物质积累、籽粒灌浆、百粒质量、单株粒数和产量的增加,BW₃的大豆产量较BW₁和BW₂显著提高了37.2%和19.6%。各密度水平下,大豆产量呈现出先增后减的趋势,D₃的大豆产量较D₁和D₄显著提高了9.4%和6.0%。在BW₃下不同密度处理间的大豆产量表现为:D₂>D₃>D₄>D₁。在玉米-大豆间作中,带宽2.4 m,大豆种植密度在67 500～82 500株/hm²时,大豆光合特性改善,群体干物质积累量增加,大豆产量较高。更多还原

【Abstract】 In order to explore the effects of bandwidth and soybean planting density on soybean yield in maize-soybean intercropping system.The study used two factors split plot design,the main factors for three levels of bandwidth（BW₁:2.0 m,BW₂:2.2 m,BW₃:2.4 m）,deputy factors for four soybean density gradient（D₁:52 500 plants/ha,D₂:67 500 plants/ha,D₃:82 500 plants/ha,D₄:97 500 plants/ha）,the photosynthesis and dry matter accumulation,organ allocation ratio,grain-filling and yield of soybean were surveyed.The results showed that the increase of bandwidth was conducive to the increase of soybean photosynthetic characteristics,dry matter accumulation of population,grain filling,100-grain weight and grain number per plant,thus increasing soybean yield. The soybean yield of BW₃ was significantly increased by 37.2% and 19.6% compared with that of BW₁ and BW₂. At each density level,the soybean yield showed a trend of increasing first and then decreasing,and the soybean yield of D₃ was significantly increased by 9.4% and 6.0% compared with that of D₁ and D₄. In the case of BW₃,the treatment of different densities was as follows: D₂ >D₃>D₄>D₁. In maize and soybean intercropping,when the bandwidth was 2.4 m and the planting density was 67 500 plants/ha to 82 500 plants/ha,the photosynthetic characteristics of soybean improved and the dry matter accumulation of the population increased,thus increasing the yield.更多还原