| 白 蕤1，李 宁2，钟曼茜3，佟金鹤1，陈小敏1，邹海平1，陈汇林1，刘少军1.分期播种对海南冬种玉米生长发育和产量的影响[J].广东农业科学,2017,44(8):7-13 |
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分期播种对海南冬种玉米生长发育和产量的影响 |
| Effects of sowing by stages on growth and yield of winter maize in Hainan Province |
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| DOI：10.16768/j.issn.1004-874X.2017.08.002 |
| 中文关键词: 冬种玉米 分期播种试验 温度 产量 |
| 英文关键词: winter maize sowing by stages temperature yield |
| 基金项目:国家公益性行业（气象）科研专项（GYHY201206019）；国家自然科学基金（41465005，41265007）；
海南省气象局青年基金（HNQXQN201602） |
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| 中文摘要: |
| 为研究不同播期对海南冬种玉米的生长发育和产量的影响，利用2015 年在海南省万宁市开展
的冬种玉米分期播种试验，结合当年气象数据，探讨温度对其生长发育和产量的影响，以确定冬种玉米最
佳播期。结果表明：播期越早，玉米的发育期越短、株高越高、叶片数越多、产量越高；播期延后热量条件
差，积温不足，遭受冷害风险大，产量减少甚至绝产。10℃有效积温与产量及其构成要素有较好的相关性，
当10℃有效积温为1 230℃·d 时，产量最高。分析表明，海南省冬种玉米的适宜播期最迟在11 月底之前。
研究结果对保障海南冬种玉米稳产、高产有着十分重要的意义。 |
| 英文摘要: |
| In order to study the effects of sowing date on the growth and yield of winter maize in Hainan，the
effects of temperature on the growth and yield and the best sowing date for winter maize were discussed by using the
winter maize sowing experiment and combining with the meteorological data in Wanning in 2015. The results showed
that the earlier sowing date induced shorter growing period of maize，the higher plant height，the higher number of
leaves and the higher yield. The heat conditions would be poor and the accumulated temperature would be insufficient
due to the delayed sowing time. Moreover，this would induce the higher risk of cold injury and reduce production or
even no yield. There was a good correlation between 10℃ effective accumulated temperature and maize yield and its
composition elements. When the 10℃ effective accumulated temperature was 1230℃·d，the yield was the largest.
The optimal planting date for winter maize should be before the end of November in Hainan Province. These results in
the study would be important to ensure stable and high yield of winter maize in Hainan. |
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