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收获期对夏玉米千粒重及产量的影响
引用本文:李月华,侯大山,刘强,李向华,李霞,于广军,李辉利,李中建.收获期对夏玉米千粒重及产量的影响[J].河北农业科学,2008,12(7):1-3.
作者姓名:李月华  侯大山  刘强  李向华  李霞  于广军  李辉利  李中建
作者单位:1. 石家庄市农业技术推广中心,河北,石家庄,050051
2. 赵县农业科学研究所,河北,赵县,051530
摘    要:玉米适当晚收、小麦适当晚播的“两晚”栽培技术,目的是充分利用光热资源,增加玉米产量,搭配实现小麦高产抗旱栽培。以不同熟期的10个夏玉米品种为试材,研究了不同收获期对千粒重和产量的影响。结果表明:冀中地区夏玉米的最佳收获期为10月1日之前,同时明确了千粒重的增加与全生育期积温呈极显著正相关,与日平均温度关联不大,长期缺光影响千粒重增加。

关 键 词:夏玉米  收获期  千粒重  产量

Effect of Harvest Period on 1 000-grain Weight and Yield of Summer Maize
LI Yue-hua,HOU Da-shan,LIU Qiang,LI Xiang-hua,LI Xia,YU Guang-jun,LI Hui-li,LI Zhong-jian.Effect of Harvest Period on 1 000-grain Weight and Yield of Summer Maize[J].Journal of Hebei Agricultural Sciences,2008,12(7):1-3.
Authors:LI Yue-hua  HOU Da-shan  LIU Qiang  LI Xiang-hua  LI Xia  YU Guang-jun  LI Hui-li  LI Zhong-jian
Institution:LI Yue-hua1,HOU Da-shan1,LIU Qiang1,LI Xiang-hua1,LI Xia1,YU Guang-jun2,LI Hui-li2,LI Zhong-jian2
Abstract:The cultivation technique called two later techniques,namely suitable later harvest for maize and suitable later sowing for wheat,was intended to utilize the light and heat resource.It also benefited the yield increase of the maize and the resistant-drought cultivation of the wheat.Taking 10 maize varieties with different maturation periods as materials,the effect of the harvest period on 1 000-grain weight and yield was studied.The result indicated that the optimum harvest period for summer maize in the central region of Hebei Province was in the end of September.The increase of 1 000-grain weight very significantly correlated with the accumulated temperature of whole growth period.However,it was not related to the daily mean temperature.The daylight deficiency for a long-term could influence the increase of 1 000-grain weight.
Keywords:Summer maize  Harvest period  1 000-grain weight  Yield
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