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関連する概念動画

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

27.1K
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.
27.1K
Underflow Gates01:30

Underflow Gates

159
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
159
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

23.2K
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...
23.2K
Water and Mineral Acquisition02:34

Water and Mineral Acquisition

34.3K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
34.3K
Regulation of Water Output01:26

Regulation of Water Output

1.6K
The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
1.6K
Responses to Drought and Flooding02:41

Responses to Drought and Flooding

11.3K
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.
11.3K

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関連する実験動画

Updated: Nov 7, 2025

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
07:45

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

Published on: October 22, 2018

16.3K

栄養と水の管理を通じて収穫のギャップを埋める

Nathaniel D Mueller1, James S Gerber, Matt Johnston

  • 1Institute on the Environment, University of Minnesota, St. Paul, Minnesota 55108, USA. muell512@umn.edu

Nature
|August 31, 2012
PubMed
まとめ

将来の食糧需要を満たすためには,持続可能な強化が必要である. 収穫のギャップを埋めることは,世界の作物生産を大幅に増加させることができ,栄養素と水の管理を最適化すると,環境への影響を軽減することができます.

科学分野:

  • 農業科学 農業科学とは
  • 環境科学 環境科学
  • 世界的な食糧安全保障

背景:

  • 人類は,農業による環境劣化の中で,2050年までに食料需要を倍増させるという課題に直面しています.
  • 持続可能な増強は,収穫量を増やし,環境への影響を減らすために提案されていますが,そのグローバルな影響は不明です.

研究 の 目的:

  • 利回りギャップを埋めることにより,世界的な増強の見通しを評価する.
  • 農業管理の空間的パターンと収穫の制限を分析する.
  • 収穫の増加のために必要な管理変更を特定する.

主な方法:

  • 利回り格差のグローバル・スケール評価 (観察された利回りと達成可能な利回りとの差).
  • 収穫の変動を制御する要因の分析:肥料の使用,灌,気候.
  • 収益格差を埋めるために必要な経営改革の評価.

主要な成果:

  • 収穫のギャップを埋めることで,ほとんどの作物で世界の生産量を45%~70%増加させることができる.
  • 収穫の変動は主に肥料,灌,気候によって引き起こされます.
  • 栄養素の過剰使用を排除することで,環境への影響を大幅に削減することができ, ~30%の穀物生産の増加が可能になります.

さらに関連する動画

A Protocol for Collecting and Constructing Soil Core Lysimeters
13:23

A Protocol for Collecting and Constructing Soil Core Lysimeters

Published on: June 6, 2016

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Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling
10:16

Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling

Published on: January 16, 2014

22.8K

関連する実験動画

Last Updated: Nov 7, 2025

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
07:45

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

Published on: October 22, 2018

16.3K
A Protocol for Collecting and Constructing Soil Core Lysimeters
13:23

A Protocol for Collecting and Constructing Soil Core Lysimeters

Published on: June 6, 2016

11.9K
Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling
10:16

Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling

Published on: January 16, 2014

22.8K

結論:

  • 将来の食糧安全保障と持続可能性の目標を達成することは,栄養と水の管理に重大な変化を起こすことによって達成可能である.
  • 持続的な増強には,生産性のギャップを効果的に埋めるために,地域特有の管理戦略が必要である.