通过优化玉米-大豆带交叉作物的植物密度来提高生产效率
Guanghao Li1,2, Yuwen Liang1, Qiannan Liu1
1Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, China.
Frontiers in plant science
|October 28, 2024
概括
优化玉米-大豆带交叉作物 (MSSI) 密度显著提高了粮食总产量和资源效率. D3密度组合 (67,500玉米/142,500大豆植物ha-1) 在提高生产方面表现最好.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 可持续农业 可持续农业
背景情况:
- 交叉作物系统,特别是玉米-大豆带交叉作物 (MSSI),对于提高土地生产率至关重要,因为耕地有限.
- 最佳的植物密度是最大限度地提高MSSI产量和资源利用的关键,但仍然不太了解.
研究的目的:
- 评估不同玉米和大豆密度对MSSI系统产量,经济效益,土地利用效率和 (N) 使用的影响.
- 在MSSI中确定最佳密度组合,以提高生产效率.
主要方法:
- 实地实验使用五种不同的玉米/大豆密度组合 (D1-D5) 在均输入下进行.
- 收集和分析了关于谷物产量,叶面积指数,干物积累和吸收的数据.
主要成果:
- 增加玉米和大豆密度显著提高了谷物总产量,D3处理 (67,500/142,500种植物ha-1) 显示了最高的产量.
- D3处理还改善了叶面积指数,干物积累以及N的吸收和利用.
- 路径分析显示,密度是玉米产量的主要驱动因素 (49.7%),而谷物数量对大豆产量的影响最大 (61.0%).
结论:
- 优化工厂密度对于最大限度地提高MSSI系统的生产效率至关重要.
- D3密度组合为夏季种植的MSSI提高产量和资源使用提供了有希望的策略.
- 结果为MSSI技术的更广泛采用和有效实施提供了关键的见解.
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