知识世界

History:The Synthetic Ammonia Process

When people began to know that fertilizers used in the soil could improve the output of the food supplies， they used a lot. Then the nitrogenous fertilizer deficiency came into being. Luckily， the success of developing synthetic ammonia completely solves the problem.

• 01

  History： Secrets of the Anasazi

  
• 02

  History： Alfred Nobel and Dynamite

  
• 03

  History： What The Ancients Did for Us — The Greeks

  
• 04

  History： Mysterious Places — Chartres France

  
• 05

  History： Seven Wonders of Ancient Rome

  
• 06

  History： The Egyptians

  
• 07

  History： Planck and Quantum Physics

  
• 08

  History： Mysterious Places — Pompeii Italy

  
• 09

  History： Transportation Achievements

  
• 10

  History： Poisoned