Chemical Business - The Backbone Of Agricultural Development

Over very long time, human meals and clothing depended primarily on agriculture. While ever since the historical time, agriculture had always relied on a variety of human labor, which was subject to varied kinds of natural conditions. So the development of agriculture was very slow. In the course of the 19th century, the use of agricultural machinery gradually improved the working conditions. Nevertheless, 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 the measures to increase the agricultural production, the function performed by chemical fertilizers is 40% to sixty five%. On the premise of the booming within the petrochemical business, synthetic ammonia and urea have realized massive-scale production, which makes the output of chemical fertilizer occupy a large proportion within the chemical products. In 1985, the total output of chemical fertilizer in the world amounted to approximately one hundred forty million ton, which made it turn into one of many bulk chemical products. Lately, the development of nitrogen, phosphorus and potassium compound fertilizer and trace parts fertilizer has additional meet the demands of various soil buildings and totally different crops.

In the early period, people used natural animals, plants and minerals to prevent and deal with crop pests and diseases. Till the late nineteenth century, after the formation of modern chemical trade, folks started to make use of arsenic preparation to kill beetles on potato, and use Bordeaux combination to prevent and treat downy mildew on grapes, in order that agriculture started a new period of chemical prevention and treatment. Through the Forties, numerous pesticides and herbicides, comparable to organic chlorine, organic phosphorus, had been produced and widely utilized in agriculture, forestry, animal husbandry and public health. Nonetheless, a number of the pesticides throughout this period were rich in residues or poison, which caused ecological air pollution, so they had been banned by many countries.

In recent years, 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 turn into probably the most active areas in pesticide research currently.

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