优化行比配置,以提高玉米-草间作物的生产率和资源利用效率.
Zeqiang Shao1, Shiqiang Hu1, Chunying Fan2
1College of Resource and Environment Engineering, Jilin University of Chemical Technology, Jilin 132022, China.
Plants (Basel, Switzerland)
|December 31, 2025
概括
2:2的玉米-草杂交作物比率优化了资源使用和产量,通过增强互补性和减少可持续农业的竞争,优于单一作物和其他比率. 这一比率显著提高了土地生产率.
科学领域:
- 农业学是一种农业学.
- 植物科学 植物科学
- 可持续农业 可持续农业
背景情况:
- 玉米和合种植是中国东北地区提高土地生产率和料产量的关键做法.
- 交叉作物系统中的作物竞争可能会限制系统的整体性能,需要优化行比.
研究的目的:
- 评估各种玉米-草行比对资源利用效率,生理特征和产量的影响.
- 确定最佳的交叉作物配置,以最大限度地提高系统性能和可持续性.
主要方法:
- 实地实验使用六行玉米-草比率 (1:1, 2:1, 2:2, 3:1, 3:2, 3:3) 和单一作物对照进行.
- 测量包括生理特征 (光合作用率,叶绿素含量),植物高度和产量组件.
- 资源利用效率是使用土地等价比率 (LER),土地等价系数 (LEC),系统生产率指数 (SPI) 和拥挤指数 (K) 来评估的.
主要成果:
- 2:2排列比率在大多数交叉作物配置中表现出卓越的性能,显示出增强的互补性和土地利用效率.
- 虽然单一作物产生了更高的单一作物价值,但2:2交叉作物系统实现了累计产量增加,比单一种植草增加了55%,比单一种植玉米增加了56-57%.
- 像光合作用率和叶绿素含量等生理指标在两种作物的2:2比率下是最高的. 的产量达到2:2,玉米的产量最高,为3:1.
结论:
- 2:2的玉米-草行比例是最佳的交叉作物,平衡减少竞争与增强的互补性.
- 这种配置为玉米-草交叉作物提供了更有效和可持续的策略,大大提高了土地生产率.
- 这些发现为优化类似农业环境中的交叉作物系统提供了宝贵的见解.
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