中晚熟区主要高粱品种耐瘠性综合评价

张彦,王劲松,董二伟,武爱莲,王媛,焦晓燕

Comprehensive Evaluation of Low-Fertility Tolerance of Different Sorghum Cultivars in Middle-Late-Maturing Area

ZHANG Yan,WANG JinSong,DONG ErWei,WU AiLian,WANG Yuan,JIAO XiaoYan

表4 瘠薄胁迫对不同品种高粱农艺性状的影响

Table 4 Effect of low-fertility stress on agronomic traits in different sorghum cultivars

性状 Trait 高肥力High soil fertility 低肥力Low soil fertility 均值降低幅度 Decreasing rate (%) 均值 Mean 变化范围 Variation range 标准差 SD CV (%) 均值 Mean 变化范围 Variation range 标准差 SD CV (%) 产量Y (t·hm-2) 7.07 5.58—8.66 0.78 11.06 3.92 2.94—4.89 0.47 12.03 44.23 千粒重 TGW (g) 26.28 16.80—35.17 5.60 21.32 25.30 16.37—29.87 3.86 15.24 1.80 穗粒数 GNS 2228.56 1371.34—3320.73 439.56 19.72 1240.26 744.45—1987.52 268.47 21.65 43.72 收获指数 HI (%) 50.22 41.14—58.51 4.06 8.09 43.49 32.09—51.54 4.69 10.79 13.34 地上干物质积累DMAS (t·hm-2) 14.09 11.75—16.65 1.28 9.05 9.04 7.40—10.34 0.79 8.79 35.45 抽穗后干物质积累HDMA (t·hm-2) 6.10 3.39—8.60 1.49 24.36 2.42 0.33—4.21 0.92 37.86 60.69 叶面积指数 LAI 5.91 3.95—8.21 1.25 21.07 4.25 2.89—5.48 0.66 15.45 26.14 穗长 PL (cm) 28.76 21.63—36.53 3.82 13.29 26.24 20.57—31.37 2.79 10.63 8.01 穗宽 PW (cm) 9.65 7.13—13.87 1.60 16.52 7.31 5.40—10.53 1.30 17.82 23.82