草回归下的气值:优化气的应用,以协同提高玉米的产量和营养状况
Xiaolong Zhang1, Xiangzeng Meng2, Shan Zhang3
1State Key Laboratory of Nutrient Use and Management, Shandong Academy of Agricultural Sciences, Jinan, China.
Frontiers in plant science
|March 13, 2026
概括
与草土 (SM) 相比,使用草土 (SP) 的土耕作显著提高了玉米的产量和营养质量. SP还提高了肥的效率,提供了降低N投入的潜力,同时保持高作物生产率.
科学领域:
- 农学和土壤科学 农学和土壤科学
- 植物生理学作物生理学
- 可持续农业 可持续农业
背景情况:
- 返回草提高了土壤的肥力,并可以减少 (N) 肥料的需求.
- 最佳的N应用率受到作物残留物管理实践的影响.
- 了解残留物管理对产量和使用效率的影响,对于可持续农业至关重要.
研究的目的:
- 调查两种草残留物管理方法 (草土与含草的地耕作) 对玉米的影响.
- 确定这些方法对玉米谷物产量,营养质量和化肥 (PFPN) 部分因素生产率的影响.
- 为了确定每个残留物管理实践的最佳应用率.
主要方法:
- 一个长期的实地实验比较了没有用草土耕作 (SM) 和用草土耕作 (SP) 的耕作.
- 在两种残留物管理系统下,应用了五种的应用速率 (0-270公斤/ha-1).
- 评估了玉米的谷物产量,1000个核的重量,核数量,营养质量 (原油,粉) 和PFPN.
主要成果:
- 含草的耕 (SP) 导致玉米产量比草土 (SM) 高9.24%,这是由于1000核重量和核数量增加所致.
- 与SM相比,SP显著提高了化肥 (PFPN) 的部分因子生产率13.88%,特别是在N率低于150 kg ha-1.1的情况下.
- SP改善了综合营养质量,原油脂肪增加了6.68%,粉增加了1.90%.
结论:
- 用草结合的耕 (SP) 优于草覆盖 (SM) 实现高玉米产量和营养质量,同时提高化肥的节省.
- 最佳的N应用率为SP的113.82-129.53公斤/ha-1和SM的129.90-135.81公斤/ha-1.
- 通过优化N使用效率和作物质量,SP显示了可持续农业的巨大潜力.
更多相关视频
10:29Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
Published on: March 21, 2016
12.9K
05:55High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.
Published on: June 16, 2018
7.6K
相关概念视频
Key Elements for Plant Nutrition
24.7K
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...
24.7K
Inorganic Nitrogen Assimilation
741
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
741
Overview of Nitrogen Metabolism
12.4K
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...
12.4K
The Nitrogen Cycle
61.2K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
61.2K
