玉米新品种豫玉27群体生理指标的研究  

A Study on the Population Physiologic Indexes of New Maize Cultivar Yuyu 27

作　　者：檀尊社 陈润玲 赵保献 韩卫红 雷晓兵 梁晓伟 游福欣 王定勋 

机构地区：[1]洛阳市农业科学研究所,河南洛阳471022 [2]宜阳县种子公司,河南宜阳471600

出　　处：《西北农业学报》2003年第2期31-35,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金："九五"国家科技攻关项目(96-002-03)。

摘　　要：对豫玉27群体生理指标进行了研究,结果表明豫玉27叶片上冲,叶向值大,株型紧凑,群体内光分布较合理。叶面积系数和光合势稳定期长,衰减慢,叶片净同化率高,后期灌浆持续时间长,强度高,全株地上部于物质积累呈“S”型曲线,从吐丝授粉开始到授粉内25d干物质积累为最终生物产量的50.9％～53.4％。适宜种植密度为63000～69000株/hm^2。The population physiologic indexes of a new maize cultivar-yuyu 27 were determinited in 1999. The results showed that the cultivar's plant shape was terse,leaf upheld,leaf orientation value (LOV) was big. Photoillumination in the plant population rational-distributed. Leaf area index (LAI) and leaf area duration (LAD) long-stabilized and slow-atlenuated,net assimilation rate(NAR) of leaf was high. Duration and intensity of filling stage was long and high. Dry material accumulation of the plants on the ground was S-shaped curve,the percentage of dry material accumulation was 50. 9%~ 53. 4% ot the final biolgical yield in 25 d from spinning to pollination. The planting density of 63 000-69 000 plant/hm2 was suitable.

关 键 词：玉米 品种 豫玉27 群体 生理指标 种植密度 

分 类 号：S513[农业科学—作物学]