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以郑单958和登海601为材料,研究冀西北半干旱补罐区超高产玉米的源库特征。结果表明,登海601玉米生育期长,叶面积和叶面积指数大,叶源和茎鞘的干物质积累量大,源生产能力高;郑单958表现相对登海601较差。登海601的产量达到18 474 kg/hm2,产量构成因子的表现突出,其单位穗数为91 800穗/hm2,穗粒数为528粒/穗,千粒重为384.75 g,粒叶比达到0.23 kg/m2,源库能协调发展。郑单958单位面积穗数高,穗粒数低,群体总粒数偏低,千粒重也低,产量未突破15 000 kg/hm2。
Taking Zhengdan 958 and Denghai 601 as materials, the source and sink characteristics of super-high-yielding maize in the semi-arid replenishment tank area in northwestern Hebei Province were studied. The results showed that Denghai 601 maize had a long growing period, large leaf area and leaf area index, large dry matter accumulation of leaf source and stem sheath, and high source productivity. Zhengdan 958 showed a poorer performance than that of Denghai 601. The yield of Denghai 601 reached 18 474 kg / hm2, and its yield components showed outstanding performance with 91,800 spikes / hm2 per spike, 528 spikes per spike, 384.75 g 1000-grain weight and 0.23 kg / / m2, source library can coordinate the development. The unit area of Zhengdan 958 was high in spike number, low in grains per spike, low in total population of grains and low in 1000-kernel weight. The yield did not exceed 15 000 kg / hm2.