提高N使用效率,增加小麦产量和通过有益细菌减少化学肥料依赖
Muhammad Shaaban1, Aneela Younas2, Mirza Abid Mehmood3
1College of Agriculture, Henan University of Science and Technology, Luoyang, China. shabanbzu@hotmail.com.
Rice (New York, N.Y.)
|September 30, 2025
概括
将有益的细菌与减少的肥料相结合,可以提高小麦产量和土壤健康. 这种环保方法提高了使用效率 (NUE),减少了对可持续农业化学投入的依赖.
科学领域:
- 农业科学 农业科学
- 土壤微生物学 土壤微生物学
- 植物生理学 植物生理学
背景情况:
- 全球粮食需求不断增长,需要提高农业生产率.
- 传统农业严重依赖化学 (N) 肥料,这给环境和经济带来了挑战.
- 可持续的替代品对于改善土壤健康和作物产量至关重要,同时最大限度地减少N投入.
研究的目的:
- 为了评估在小麦种植中具有降低N肥料率的有益细菌的整合.
- 评估对土壤健康,小麦生产率和使用效率 (NUE) 的影响.
- 确定减少对合成N肥料的依赖的潜力.
主要方法:
- 进行了一项为期两年的实地研究,其中使用了9种治疗方法,其中结合了不同的N肥率 (0%,50%,100%) 和有益细菌的应用 (土壤应用和种子注射).
- 监测了土壤特性,包括营养含量,微生物生物质碳 (MBC),溶解有机碳 (DOC) 和酶活性.
- 分析了植物生理参数,如叶绿素含量,抗氧化酶活性和N积累.
主要成果:
- 用有益细菌接种种子,在关键生长阶段显著改善了土壤健康指标 (,酸盐,MBC,DOC,酶活动).
- 细菌治疗增强了植物生理功能,导致N积累和转移,蛋白质含量和谷物产量增加.
- N50 + SIB 治疗实现了与单独 N100 相似的产量,证明了化学 N 依赖的有效减少和改善 NUE (16-34%的增加).
结论:
- 用有益细菌接种种子是提高土壤健康和小麦生产率的可行策略.
- 这种方法可以显著减少合成肥的应用,而不会影响产量或谷物质量.
- 整合有益细菌为改善小麦生产中的NUE提供了可持续和环保的解决方案.
相关概念视频
01:27Microorganisms in Agriculture and Food industry
1.4K
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
1.4K
01:22Inorganic Nitrogen Assimilation
480
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...
480
01:30Environmental Applications of Microorganisms
969
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
969
02:11The Roles of Bacteria and Fungi in Plant Nutrition
46.6K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
46.6K
01:59Plant Breeding and Biotechnology
21.5K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
21.5K
01:20Overview of Nitrogen Metabolism
11.0K
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...
11.0K