通过减轻氨气挥发和管理方法提高的使用效率和玉米 (Zea mays L.) 的产量
Khadim Dawar1, Atif Dawar1, Muhammad Tariq1
1Department of Soil and Environmental Science, The University of Agriculture Peshawar, Peshawar, Pakistan.
BMC plant biology
|January 26, 2024
概括
涂硫尿素 (SCU) 显著降低了氨 (NH3) 排放,并提高了玉米生产中使用效率 (NUE). 在150公斤N ha-1下应用SCU是一种有效的策略,可以减轻N损失并提高作物产量.
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:
- (N) 肥料管理对于优化玉米 (Zea mays L.) 生产至关重要.
- 高挥发导致氨 (NH3) 排放,导致空气污染.
- 性石灰质土壤对高效的利用构成挑战,并可能加剧损失.
研究的目的:
- 调查硫涂尿素 (SCU) 和石膏涂硫 (S) 对NH3排放,使用效率 (NUE) 和玉米生产率的影响.
- 与传统尿素相比,SCU和石膏在减轻N损失方面的有效性进行比较.
- 为了确定在特定的土壤条件下提高玉米生长和产量的最佳N应用率.
主要方法:
- 一个实地实验是在使用随机完整块设计 (RCBD) 在泥土土壤上进行的.
- 评估了七种治疗方法,包括对照剂,150和200公斤N ha-1的尿素,用石膏-S的尿素和150和200公斤N ha-1的SCU.
- 测量包括NH3排放,玉米生物质,谷物产量,总吸收和NUE.
主要成果:
- 与单独的尿素相比,尿素+S和SCU处理都显著降低了总NH3排放.
- 在SCU处理 (SCU150和SCU200) 中,NH3排放减少最为显著 (高达74%).
- 玉米生物质,谷物产量和N吸收在SCU应用时显著增加 (高达30%),NUE显著改善 (高达72%).
结论:
- 涂硫尿素的应用,特别是在150公斤N ha-1下,有效地降低了N肥料率,减轻了NH3排放,并提高了玉米产量和NUE.
- 在性石灰质土壤中,SCU为可持续玉米种植提供了一个有希望的方法.
- 建议对不同的土壤和气候条件进行进一步的研究,以确定玉米的最佳SCU应用率.
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