优化应用策略可以通过增加干物转移,促进谷物填充和改善收获指数来提高谷物产量
Chuanliang Li1, Yu Shi1, Zhenwen Yu1
1State Key Laboratory of Wheat Improvement, Agronomy College of Shandong Agricultural University, Tai'an, China.
Frontiers in plant science
|May 15, 2025
概括
在冬季小麦中优化肥的应用,即使降低了210公斤Nha-1的速度,也可以显著提高谷物产量. 这一策略增强了生理活动,干物重新动员,并在补充灌下填充谷物.
科学领域:
- 农业学是一种农业学.
- 植物生理学 植物生理学
- 农作物科学 农作物科学
背景情况:
- 的应用对冬季小麦产量至关重要,影响生理活动,干物质生产和谷物填充.
- 在水有限的系统中通过保护性灌优化管理对小麦生产构成重大挑战.
研究的目的:
- 调查不同施加率对冬季小麦衰老,干物动态,谷物填充和产量的影响.
- 为了确定最佳的率,平衡生理活动和在补充灌下提高产量.
主要方法:
- 一个为期两年的实地实验 (2020-2022) 评估了四种处理:0,150,210和270公斤Nha-1 .
- 测量包括旗叶的SPAD,光合作用和抗氧化能力,糖含量,糖酸盐合成酶 (SPS) 活性,干物质运输,谷物填充时间和谷物产量.
- 统计分析对关键生理和产量参数的治疗效应进行了比较.
主要成果:
- 210公斤的Nha-1 (N210) 治疗显示了与最高率 (N270) 相当的旗叶生理活性,但显著优于较低率 (N0,N150).
- 与N0和N150相比,N210和N270处理显著增加了旗叶的糖含量和SPS活性.
- N210显著增强了溶解后干物质运输,并延长了谷物填充期,导致产量比N0增加了70.10%,并且比N150和N270显著增加.
结论:
- 在补充灌下将气应用减少到210公斤Nha-1有效地提高冬季小麦谷物产量.
- 这种产量增长归因于旗叶衰老的延迟,干物重新调动的改善以及优化的谷物填充过程.
- 通过适度的应用来维持植物细胞生理活动是改善水有限环境中的作物生产率的关键.
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