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To reveal the migration and transformation rule of nitrogen in the vadose zone and groundwater and to determine the migration mathematical model, we researched the migration and transformation rule of ammonia nitrogen, nitrate nitrogen, nitrite nitrogen in the vadose zone and groundwater by the soil column leaching experiment. The results indicate: using ammonium bicarbonate shows a stronger alkalinity...
Hebei Province is one of the most serious short of water resources provinces in China. The per capita and the every hectare of farmland of the water resources are one thirtieth and one twelfth of average value in the world respectively, with 307 m3 and 3120 m3. Along with the social economy sustainable development, the water environments have continued to deteriorate, water scarcity has become a major...
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