气候变量对玉米谷物产量及其组成部分的影响,通过调整播种日期
Wenming Wu1, Wei Yue2, Jianjian Bi1,3
1Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei, China.
Frontiers in plant science
|July 12, 2024
概括
调整夏季玉米的播种日期可以提高产量和稳定性. 6月初播种可以最大限度地提高谷物产量和每的谷粒数量,这对于适应不断变化的气候条件至关重要.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 适应气候变化 适应气候变化
背景情况:
- 气候变化对作物产量及其组成部分产生重大影响.
- 调整播种日期是农业适应气候变化的关键策略.
- 历史气象数据表明太阳辐射,最高温度和降雨模式的变化.
研究的目的:
- 确定夏季玉米的最佳播种日期,以最大限度地提高谷物产量和稳定性.
- 量化气候变量对谷物产量及其组成部分的贡献.
- 评估气候变化对玉米种植的影响.
主要方法:
- 连续4年 (2016-2019) 的实地实验,有4个播种日期 (6月5日至7月5日).
- 分析历史气象数据 (1981-2020年).
- 变量分区分析以确定气候变量贡献.
主要成果:
- 夏季玉米的最佳播种日期为6月5日至6月15日,可以获得更高,更稳定的收获.
- 每个的核数量 (58.7%) 对谷物产量做出了更大的贡献,而不是1000粒谷物重量 (41.3%).
- 在丝前到丝后 (63.1%) 和丝到收获 (86.4%) 阶段的太阳辐射显著影响了谷物产量.
结论:
- 早期播种日期 (6月5日至15日) 增加了夏季玉米的产量和稳定性,因为增加了太阳辐射.
- 未来的育种工作应专注于耐高温,光利用和耐阴影,以适应气候变化.
- 在预测的气候趋势下,开发中季玉米品种对于持续的谷物产量至关重要.
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