Chemical Business – The Backbone of Agricultural Development

Over long time, human meals and clothing depended primarily on agriculture. While ever since the ancient time, agriculture had always relied on quite a lot of human labor, which was topic to various kinds of natural conditions. So the development of agriculture was very slow. Through the 19th century, using agricultural machinery gradually improved the working conditions. However, in agricultural production, it was the application of chemical fertilizers and pesticides that really increased the agricultural output in per unit area.

Follow shows that, among all of the measures to increase the agricultural production, the function performed by chemical fertilizers is 40% to sixty five%. On the basis of the booming in the petrochemical industry, synthetic ammonia and urea have realized giant-scale production, which makes the output of chemical fertilizer occupy a big proportion within the chemical products. In 1985, the total output of chemical fertilizer on the planet amounted to approximately one hundred forty million ton, which made it turn out to be one of the bulk chemical products. Lately, the development of nitrogen, phosphorus and potassium compound fertilizer and trace components fertilizer has additional meet the demands of different soil buildings and completely different crops.

Within the early interval, individuals used natural animals, plants and minerals to forestall and deal with crop pests and diseases. Till the late 19th century, after the formation of modern chemical business, folks began to use arsenic preparation to kill beetles on potato, and use Bordeaux combination to prevent and deal with downy mildew on grapes, in order that agriculture began a new era of chemical prevention and treatment. Throughout the 1940s, lots of pesticides and herbicides, comparable to organic chlorine, natural phosphorus, had been produced and widely used in agriculture, forestry, animal husbandry and public health. However, among the pesticides during this interval have been rich in residues or poison, which caused ecological pollution, so that they had been banned by many countries.

Lately, a number of environment friendly, low-residue, low-poisonousity pesticides have been developed, together with pyrethroid, which is a bionic pesticide and will not pollute the environment. It has been put into industrial production. In consequence, bio-pesticides have become the most active areas in pesticide research currently.

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