优化覆盖模式和的应用速度,以提高玉米的光合作用能力,产量和肥利用效率
Hengjia Zhang1, Tao Chen1, Shouchao Yu1
1College of Agronomy and Agricultural Engineering, Liaocheng University, Liaocheng 252059, China.
Plants (Basel, Switzerland)
|May 11, 2024
概括
可生物降解的塑料薄膜是传统塑料薄膜的可行替代品,用于在寒冷干旱地区春季种植玉米. 最佳的肥应用可提高产量和生长,DN2处理显示出最佳结果.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 剩余的塑料薄膜污染和过度的化肥应用阻碍了农业的生产力.
- 研究可生物降解塑料薄膜等可持续替代品对于环境和农业健康至关重要.
研究的目的:
- 评估可生物降解塑料薄膜 (D) 与普通塑料薄膜 (P) 在寒冷干旱环境下在不同肥水平 (N0,N1,N2,N3) 下用于春季玉米的可行性.
- 确定这些处理对玉米生长,产量,土壤特性和营养使用效率的影响.
主要方法:
- 从2021年到2022年进行的实地实验.
- 对可生物降解和普通塑料薄膜覆盖的比较分析.
- 应用四种化肥水平 (0,160,320,480公斤·公-1).
- 测量干物质积累,光合作用参数,土壤酶活性,产量和水/使用效率.
主要成果:
- 干物质,光合作用,土壤酶活性或生物降解和普通塑料薄膜之间的产量没有显著差异.
- 肥显著限制了春季玉米的生长;生物质增加,然后随着水平的上升而下降.
- 对于两种薄膜类型,N2水平最大化了产量 (3.74~42.50%对于D,2.05~40.02%对于P).
- 增加的改善了光合作用参数,土壤酶活性和用水效率,但降低了使用效率.
结论:
- 在这种环境中,生物降解塑料薄膜是常规塑料薄膜的合适替代品.
- 肥是春季玉米生长和产量的主要限制因素.
- 在寒冷的灌地区,DN2处理 (生物降解膜含有320公斤·ha-1) 代表了稳定的产量,收入增加和绿色农业发展的最佳策略.
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