玉米中积和使用效率的变化与和率不同,并对比化肥放置方法
Sharifullah Sharifi1,2, Songmei Shi3, Xingshui Dong1
1National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in the Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, College of Resources and Environment, Southwest University, Chongqing 400715, China.
Plants (Basel, Switzerland)
|November 25, 2023
概括
深带肥料的放置显著改善了玉米的和吸收,提高了作物产量和营养使用效率,特别是在干旱地区. 这种方法对于全球的小农来说是实用的.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 土壤科学 土壤科学
背景情况:
- 优化 (N) 和 (P) 施肥对于作物生产率至关重要,特别是在半干旱和干旱的环境中.
- 有效的施肥方法是提高营养使用效率和作物产量的关键.
研究的目的:
- 评估不同和含量以及施肥方法对夏季玉米生长的影响.
- 确定最佳的施肥策略,以提高积,使用效率和玉米的产量.
主要方法:
- 对夏季玉米进行了一项为期两年的实验,采用了9个N/P受精率和三个放置方法:广播,侧带和深带.
- 玉米的生长和N积累在八叶 (45 DAS), (60 DAS) 和收获 (115 DAS) 阶段进行了评估.
主要成果:
- 较高N和P速率的广播和侧带方法 (N150P60,N187P60,N150P75,N187P75) 相比,深波段放置显著增加了叶子,茎和根的N积累.
- 农业N使用效率,部分因子生产率和N使用效率在特定高N/P率 (N150P75,N187P75) 的深波段放置时显著更高.
- 在各种植物部位的度和积之间观察到正相关性,以及在和收获阶段的土壤度.
结论:
- 与较高的N/P受精率 (N150P60,N187P60,N150P75,N187P75) 与深带放置同步,可以提高土壤N的可用性和根的N吸收.
- 这种优化的施肥策略有效地增加了地面上的N积累,N使用效率和玉米产量.
- 深波段定位方法为改善玉米生产提供了切实可行的解决方案,特别是对于水资源稀缺地区的小农来说.
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