豫东平原夏玉米高产群体生理指标研究  

Study on Population Physiological Indices of Summer Maize with High Yield on Eastern Henan Plain

作　　者：郭振升[1] 皇甫自起[1] 张慎举[1] 刘艳侠[1] 侯乐新 

机构地区：[1]商丘职业技术学院生物工程系,河南商丘476005 [2]商丘市睢阳区农业科学研究所,河南商丘476100

出　　处：《湖北农业科学》2013年第17期4054-4057,共4页Hubei Agricultural Sciences

基　　金：河南省科技攻关计划项目(112102110096)

摘　　要：选用杂交夏玉米品种吉祥1号,设置7个种植密度,研究了豫东平原夏玉米产量突破13 000 kg/hm2的群体生理指标。结果表明,在豫东平原实现13 000 kg/hm2以上夏玉米产量的适宜种植密度为8.25万~9.00万株/hm2,产量构成为穗数81 097~88 020穗/hm2、每穗粒数473.3~501.2、千粒重323.3~326.4 g;群体最大叶面积系数吐丝期最高,为5.94~6.33,到完熟期仍维持在4.39~4.67;群体全生育期总光合势为437.03~470.46(hm2·d)/hm2,平均净光合生产率为6.07~6.20 g/(m2·d)。Hybrid summer maize cultivar Lucky No.1 was planted with 7 different planting densities to study the population physiological indices of summer maize with yeild more than 13 000 kg / hm2in Eastern Henan Plain.The results showed that the summer maize yield more than 13 000 kg / hm2could be achieved with planting density at 8.25×104~9.00×104ind./ hm2,as the yield components were 81 097~88 020 spikes / hm2,473.3~501.2 granules per spike,and thousand-kernel-weight 323.3~ 326.4 g.The population leaf area index was 5.94 ~6.33,the highest during silking stage,and maintained 4.39 ~4.67 at harvest stage.The population total photosynthetic potential of the whole growth period was 437.03~470.46(hm2·d) / hm2;and the average net photosynthetic rate was 6.07~6.20 g /(m2·d).

关 键 词：夏玉米 产量 群体生理指标 豫东平原 

分 类 号：S[农业科学]