Results 11 to 20 of about 49,336 (262)

Nitrogen fertilizer: Retrospect and prospect [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
The rising fertilizer use accompanying more people eating more has been called exponential (1) and prompted fears of polluted water and consequent methemoglobinemia (2) and hypoxia (3). It also has raised alarm about greenhouse warming (4) and an altered global N cycle and thus primary production (5) and diversity (1) of vegetation. In this plethora of
C R, Frink, P E, Waggoner, J H, Ausubel
openaire   +2 more sources

Optimized nitrogen fertilizer application strategies under supplementary irrigation improved winter wheat (Triticum aestivum L.) yield and grain protein yield [PDF]

open access: yesPeerJ, 2021
Background Exploring suitable split nitrogen management is essential for winter wheat production in the Huang-Huai-Hai Plain of China (HPC) under water-saving irrigation conditions, which can increase grain and protein yields by improving nitrogen ...
Zhen Zhang   +3 more
doaj   +2 more sources

Response of organic nitrogen in Black Soil to long-term different fertilization and tillage practices in Northeast China

open access: yesSoil and Water Research, 2016
A long-term (18 years) effect of different fertilization and tillage management practices- fallowing treatment (no fertilizer, no cultivation); CK (no fertilizer, cultivation); N (nitrogen fertilizer); NP (nitrogen and phosphorus fertilizer); NK ...
Li YAN   +6 more
doaj   +1 more source

Impact of Organic and Chemical Nitrogen Fertilizers on the Crop Yield and Fertilizer Use Efficiency of Soybean–Maize Intercropping Systems

open access: yesAgriculture, 2022
The effect of the mixture (1:1) of chemical and organic nitrogen (N) fertilizer on crop yield quality and N fertilizer use efficiency remains elusive. A nitrogen field experiment was conducted in the growing seasons of 2020 and 2021 to investigate the ...
Shifang Lin   +7 more
doaj   +1 more source

Optimal cultivation measures for maize production in the drylands of the Loess Plateau [PDF]

open access: yesPeerJ
Proper nutrient management and planting density can effectively improve crop yields and economic efficiency. Optimized fertilization and high-density planting measures have gained attention for their ability to balance high crop yields with efficient ...
Wenbo Mi   +10 more
doaj   +2 more sources

Numerical simulation of ammonia refueling process for ammonia-powered vehicles

open access: yesYou-qi chuyun
ObjectiveAmmonia energy, a zero-carbon carrier, is emerging as a key solution for the green transformation of transportation, including vehicles and ships.
Lin TENG   +7 more
doaj   +1 more source

Research progress on corrosion behavior in methanol and methanol-gasoline blended transport systems

open access: yesYou-qi chuyun
ObjectivePipeline transport of methanol and methanol-gasoline blends increases the risk of corrosion and stress corrosion cracking in metallic materials, posing significant threats to the safety and integrity of energy infrastructure.
Jiaqing LI   +6 more
doaj   +1 more source

Susceptibility of microstructure in girth weld of X52 seamless steel pipe to stress corrosion in liquid ammonia

open access: yesYou-qi chuyun
ObjectiveGirth welds are critical joints in long-distance liquid ammonia pipelines. However, complex microstructures and residual stress distributions render these welds highly susceptible to Stress Corrosion Cracking (SCC) in impure liquid ammonia ...
Jiaqing LI   +6 more
doaj   +1 more source

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