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河南省夏玉米最佳收获期研究
引用本文:刘京宝,房志勇,赵霞,黄璐,夏来坤,冯保荣,刘麦囤.河南省夏玉米最佳收获期研究[J].河南农业科学,2011,40(6):46-48,55.
作者姓名:刘京宝  房志勇  赵霞  黄璐  夏来坤  冯保荣  刘麦囤
作者单位:1. 河南省农业科学院粮食作物研究所,河南郑州,450002
2. 新密市农委,河南郑州,452370
摘    要:为了确定河南省夏玉米最佳收获期,2009年利用48个玉米新品种(组合)进行了夏玉米最佳收获期研究,结果表明,当籽粒黑层形成(达到生理成熟)时,籽粒含水量在25%~35%,果穗苞叶完全变干,彻底松散,可作为收获期标准.个别品种稍有差异.籽粒乳线位置品种间变化较大,如10月10日,2个品种籽粒乳线消失,6个品种乳线位置在7...

关 键 词:夏玉米  乳线  黑层  苞叶  最佳收获期

Study on Optimum Harvest Date of Summer Maize in Henan Province
LIU Jing-bao,FANG Zhi-yong,ZHAO Xia,HUANG Lu,XIA Lai-kun,FENG Bao-rong,LIU Mai-dun.Study on Optimum Harvest Date of Summer Maize in Henan Province[J].Journal of Henan Agricultural Sciences,2011,40(6):46-48,55.
Authors:LIU Jing-bao  FANG Zhi-yong  ZHAO Xia  HUANG Lu  XIA Lai-kun  FENG Bao-rong  LIU Mai-dun
Institution:1.Cereal Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;2.Agricultural Committee of Xinmi City in Zhengzhou City,Zhengzhou 452370,China)
Abstract:The optimum harvest date of 48 new maize varieties in Henan province was studied in 2009.The results showed that when the black chromatograph of the grain appeared,the kernel moisture content was 25%-35% and the ear bract was completely dry and loose,which were considered as the standards of optimum harvest date.The position of the grain mammary line changed greatly among varieties.On Oct 10,the grain mammary of two varieties disappeared,six varieties were 70%-80%,ten varieties were 80%-90%,and thirty varieties were 90%-100%.Therefore disappearance of grain mammary line could not be used as the standard of optimum harvest date.Considering the yield of two crops in the main grain production areas with two crops a year,the optimum harvest date of summer maize in Henan province was the first ten days of October.
Keywords:Summer maize  Mammary line  Black chromatographic  Ear bract  Optimum harvest date
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