密植条件下玉米品种混播提高籽粒灌浆性能和产量

胡旦旦,李荣发,刘鹏,董树亭,赵斌,张吉旺,任佰朝

Mixed-Cropping Improved on Grain Filling Characteristics and Yield of Maize Under High Planting Densities

HU DanDan,LI RongFa,LIU Peng,DONG ShuTing,ZHAO Bin,ZHANG JiWang,REN BaiZhao

表3 密植条件下玉米品种混播对夏玉米成熟期单株干物质分配的影响

Table 3 Effects of mixed-cropping of maize varieties on dry matter distribution of per plant under different densities at maturity stage

年份 Year 密度 Planting density 种植方式 Planting pattern 干物质积累比例 Dry matter partitioning rate (%) 茎秆 Stem 叶片 Leaf 穗轴 Rachis 雄穗 Tassel 苞叶 Husk 籽粒 Grain 2017 D1 SZD958 18.90 11.66 3.10 0.75 6.80 58.79 SDH605 18.81 11.83 2.86 0.42 6.65 59.42 M 18.49 11.60 2.75 0.89 6.78 59.49 I 18.65 11.55 2.83 0.68 6.51 59.79 D2 SZD958 18.85 11.52 2.68 1.14 6.90 58.30 SDH605 18.96 11.44 2.47 0.55 6.78 59.80 M 18.75 11.94 2.48 0.54 5.65 60.65 I 18.64 11.96 2.70 0.73 6.12 60.15 D3 SZD958 19.08 11.49 2.65 0.56 6.44 57.17 SDH605 18.66 11.41 3.01 0.64 6.66 59.63 M 18.31 11.12 2.67 0.45 6.59 60.87 I 18.30 11.16 2.68 0.62 6.73 60.51 2018 D1 SZD958 18.12 12.60 4.15 0.96 6.72 57.44 SDH605 17.68 12.50 3.98 0.63 5.96 59.25 M 17.54 12.20 3.48 0.94 6.71 59.13 I 17.52 12.11 3.63 0.82 6.79 59.14 D2 SZD958 18.64 11.93 4.29 0.87 6.90 57.64 SDH605 18.44 11.98 3.37 0.63 7.16 58.99 M 18.2 12.16 3.64 1.04 5.99 59.58 I 18.35 11.67 3.55 0.93 6.35 59.68 D3 SZD958 18.71 11.57 3.68 0.75 7.46 57.83 SDH605 19.16 11.84 2.56 0.47 7.04 58.93 M 18.51 11.57 3.06 0.90 5.89 60.08 I 18.50 11.42 3.15 0.78 6.14 60.02