Yield characteristics on spring maize with super-high yield in irrigated semiarid zone | 冀西北半干旱补灌春玉米超高产源库特征研究
2011
Lu Aizhi, Hebei North University, Zhangjiakou(China) | Cao Ximin, Hebei North University, Zhangjiakou(China)
Chinese. 摘 要：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18474kg／hm＾2，产量构成因子的表现突出，其单位穗数为91800穗／hm＾2，穗粒数为528粒／穗，千粒重为384．75g，粒叶比达到0．23kg／m＾2，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，干粒重也低，产量未突破15000kg／hm＾2。
Show more [+] Less [-]English. Zhangdan958 and Denghai601 were used as materials in order to study source-sink characteristics of super-high yield maize. The result indicated that Denghai601 have the longer growing peroid. Its leaf area index is the largest. Its dry weight of leaf- source and stalk are heavier Zhangdan958. Yield of Denghai601 is 18 474 kg/ha. Number of ears per hectare is 91 800 ears/ha. Grain number per ear is 528 grains/ear. Thousand grains weight is 384.75 g. The grain-leaf ratio of Denghai601 is 0.23 kg/m. . All of these characteristics are worse than Denghai601. Yield of Zhangdan958 is less than 15 000 kg/ha.
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