适当的施肥可以改善玉米的生长和营养利用,在半干旱地区的山脊雨收获农田中改善玉米的生长和营养利用
Jiayi Wang1,2, Gaoxiang Liu1,2, Nan Cui1,2
1College of Agronomy, Northwest A&F University, Yangling, Shaanxi, China.
Frontiers in plant science
|June 26, 2023
概括
在半干旱地区,优化山脊雨收获 (RFRH) 下玉米的肥料率至关重要. 适度施肥 (300公斤N,150公斤P2O5) 提高了产量和营养吸收,根据降雨量进行调整.
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:
- 半干旱地区面临水资源短缺,影响作物生产.
- 脊雨收获系统 (RFRH) 提高了水的可用性.
- 优化施肥是最大限度地提高作物产量和营养使用效率的关键.
研究的目的:
- 研究不同施肥率对玉米生长和产量的影响.
- 为了确定在RFRH系统下对玉米的最佳肥料应用.
- 评估在半干旱环境中的肥料使用效率.
主要方法:
- 一个为期四年的实地实验 (2013-2016) 在中国的一个半干旱地区.
- 应用了四种肥料处理:RN (0N,0P2O5),RL (150N,75P2O5),RM (300N,150P2O5),和RH (450N,225P2O5) 千克hm-2.2.
- 测量包括干物质积累,营养吸收,肥料使用效率和谷物产量.
主要成果:
- 玉米干物质的积累随着肥料的使用率而增加.
- 在RM下,的积累达到峰值,而的积累则随着应用速度的增加而增加.
- 和使用效率随着肥料的增加而下降,RL显示最大效率. 玉米产量呈现出抛物线趋势,随着受精率的增加而增加,然后随着受精率的下降而下降.
结论:
- 对于半干旱地区的RFRH系统,建议每公300公斤N和150公斤P2O5的适度受精率.
- 应根据降雨模式调整施肥率.
- 优化的施肥策略可以提高作物产量和营养利用效率,同时可能减少化学肥料的使用.
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