相关实验视频

Updated: Jun 26, 2025

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

实施土壤氨酸N肥料管理,以同步土豆N需求

Yang Chen¹, Yangyang Chen², Jing Yu²

¹College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, 010018, China.

|May 9, 2024

概括

优化 (N) 肥的应用对于土豆,一个高N需求的作物,提高产量和营养使用. 基于土壤转化模式的氨N的分割应用显著提高了土豆生产和N效率.

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:

土豆在不同的生长阶段需要特定的 (N) 形式,以获得最佳的产量和营养使用效率.
对土壤施加的N可以通过化转化,这使得马种植的精确管理变得复杂.
之前的战略集中在酸盐和N定时,但土壤转化动态带来了挑战.

研究的目的:

调查新 (N) 调节策略,以提高土豆产量和N肥料使用效率.
了解不同应用时间和速度下的土壤 N 转化模式.
根据土壤和N动态,制定和评估一个优化的N管理策略.

主要方法:

进行了两次实地实验 (2020-2022年) 与不同的N个应用率 (实验1).
对比了三个N管理实践:农民实践,酸盐跟随和化抑制剂,以及优化的分割应用策略 (实验2).
在土壤氨N转化率的监测,在土壤氨N在不同的土豆生长阶段应用后.

主要成果:

超过90%的N在基底应用后20天内转化,并在结核形成和膨胀期间作为顶部包装应用后10天内转化.
优化的分割应用策略使马产量增加了20%,N肥料的部分因子生产率增加了20%.
在优化策略下,土壤顶部60厘米的剩余无机N减少了12-20%.

结论:

在关键的土豆生长阶段,N的转化在基底应用时较慢,在顶部装饰时更快.
根据土壤转化模式进行分期应用的N,有效地使的供应与土豆需求保持一致.
优化的策略显著提高了土豆产量,N使用效率,并减少了环境N损失.

关键词:

在化过程中,化形成了的形式.的残留物的残留物的使用效率效率.马的产量可以提高.

更多相关视频

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

Agroinfiltration and PVX Agroinfection in Potato and Nicotiana benthamiana

Agroinfiltration and PVX Agroinfection in Potato and Nicotiana benthamiana

Published on: January 3, 2014

相关概念视频

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

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...

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

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 Roles of Bacteria and Fungi in Plant Nutrition

The Roles of Bacteria and Fungi in Plant Nutrition

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.

The Nitrogen Cycle

The Nitrogen Cycle

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...