The Development Of Nitrogen Fertilizer In My Country

Since the 20th century, the production of nitrogen fertilizers has always played a pivotal role. This is mainly because the average nitrogen fertility of the world's soil is not high, and nitrogen is not easy to accumulate in the soil, and modern intensive agriculture promotes the excessive loss of soil organic matter and nitrogen. Under most conditions, the increase in yield per unit of nitrogen is higher than that of phosphorus. , Potassium nutrients.

my country's nitrogen fertilizer industry developed relatively late, and it was not until 1935 that two nitrogen fertilizer plants were built in Dalian and Nanjing to produce ammonium sulfate.

Before 1949, the cumulative amount of nitrogen fertilizer produced in the country was 600,000 tons (N), which was mainly used in coastal provinces.