| 播期对冬小麦成穗能力的影响 |
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| 引用本文： | 吕丽华,梁双波,姚海坡,张丽华,马贞玉,贾秀领.播期对冬小麦成穗能力的影响[J].河北农业科学,2016(3). |
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| 作者姓名： | 吕丽华 梁双波 姚海坡 张丽华 马贞玉 贾秀领 |
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| 作者单位： | 农业部华北地区作物栽培科学观测实验站，河北省农林科学院粮油作物研究所，河北 石家庄 050035 |
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| 基金项目： | 河北省财政人才队伍建设项目(F14E055609)；农业部公益性行业科研专项(201203100) |
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| 摘 要： | 通过研究不同播期对小麦穗数形成的生长指标的影响,可以确定不同类型小麦品种的适宜播种期。采用裂区试验设计,以播期为主区、品种为副区,参试小麦品种为衡4399、冀麦585、金禾9123和中麦155,播期设均10月5日、10日、15日、20日4个水平,研究了不同播期对冬小麦成穗能力的影响。结果表明:播期推迟至10月10日,对冀麦585和金禾9123冬前分蘖和根系生长无显著影响;可通过推迟播期降低枯叶率,金禾9123和中麦155播期需推迟至10月20日枯叶率才能明显降低;播期推迟至10月15日对多数参试品种5叶以上大蘖形成无明显影响;衡4399和中麦155播期推迟至10日,冀麦585播期推迟至15日,金禾9123播期推迟至20日,单位面积穗数稳定。金禾9123和冀麦585适播期长,晚播时单位面积穗数降低不明显,冀中地区推荐适宜播期为10月5~15日;衡4399和中麦155适播期短,冀中地区推荐适宜播期为10月5~10日。
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| 关 键 词： | 播种期 小麦 单位面积穗数 |
Effect of Sowing Date on Spike Form for Wheat Cultivars |
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| Abstract: | The research on the growth index of effecting spike number formed under different sowing date. The purpose of this research is to determine the suitable sowing date of different wheat varieties. There-fore, we conducted an experiment with different sowing date and cultivars in Dishang Experimental Sta-tion. The split plot design was employed with main plot of sowing date,sub-plot of cultivar. Four sowing dates ( 5 October, 10 October, 15 October and 20 October) and 4 wheat varieties (Heng 4399, Jimai 585, Jinhe 9123, Zhongmai 155) in 2012-2013 and 2013-2014 were set. The results showed that the growth of the tiller and root before winter was not affected when sowing date was postponed from 5 Octo-ber to 10 October for Jimai 585 and Jinhe 9123. Withered leaf rate of reviving stage may be reduced via delayed sowing time,and for Jinhe 9123 and Zhongmai 155,withered leaf rate was decreased when sowing date was postponed to 20 October. The big tiller above 5 leaves was not affected when sowing date was postponed to 15 October for most of the tested cultivars. When the sowing date was postponed to 20 Octo-ber for Jinhe 9123,15 October for Jimai 585,and 10 October for Heng 4399 and Zhongmai 155 their spike number per area keep stability. Therefore,their suit-able sowing period is long for Jimai 585 and Jinhe 9123, recommended sowing date was 5-15 Octo-ber, while their suitable sowing period is short for Heng 4399 and Zhongmai 155, recommended sowing date was 5-10 October in central of Hebei. |
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| Keywords: | Sowing time Wheat Spike number per area |
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