草回收和减少气:干旱地区可持续玉米生产的战略
Miaomiao Zhang1, Ning Yang1, Shiguang Wang1
1College of Agronomy, State Key Laboratory for Crop Stress Resistance and High Efficiency Production, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Journal of environmental management
|July 15, 2024
概括
结合连续的吸管回收和减少的应用,可显著提高玉米产量和干地农业中使用效率 (NUE). 这种做法还降低了产量规模的氧化排放量,促进了可持续农业.
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:
- 的损失和低使用效率 (NUE) 是干地农业的关键问题.
- 持续的吸回收和优化管理是减缓的关键策略.
- 15N标记技术对于跟踪命运和评估NUE至关重要.
研究的目的:
- 评估连续的草回收与不同的管理策略相结合对15N回收,N2O排放和玉米产量的影响.
- 确定最佳的应用率,以提高NUE和在塑料薄膜覆盖下提高作物生产率.
- 为半干旱地区的可持续农业发展提供见解.
主要方法:
- 一个为期两年的实地实验 (2020-2021) 在塑料薄膜覆下进行.
- 三种治疗方法进行了比较:没有含高N的吸管 (RP-N225),含高N的吸管 (RPS-N225),和含低N的吸管 (RPS-N180).
- 使用15N标记的同位素来追踪的命运,并测量N2O排放和玉米产量.
主要成果:
- 不断回归的草增加了肥料N吸收率和15N回收率,提高了玉米产量.
- RPS-N180处理实现了最高的NUE,部分因子生产率和吸收效率.
- 与RP-N225相比,RPS-N180显著减少了产量缩放的N2O排放,而RP-N225显示了更高的N2O排放.
结论:
- 结合连续回收的草和20%的气减少 (RPS-N180) 是提高玉米产量和NUE的有效策略.
- 这种综合方法提高了的利用率,减少了对环境的影响,特别是产量缩放的N2O排放.
- 这些发现支持在半干旱地区广泛采用草回收实践,以实现可持续农业.
相关概念视频
Adaptations that Reduce Water Loss
25.5K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.5K
Responses to Drought and Flooding
10.6K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.6K
Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K
Overview of Metabolism
29.8K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
29.8K
Overview of Nitrogen Metabolism
7.9K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.9K


