Chemical Industry – The Backbone of Agricultural Development

Chemical Industry – The Backbone of Agricultural Development

Over long time, human food and clothing depended mainly on agriculture. While ever since the historical time, agriculture had always relied on a whole lot of human labor, which was topic to varied kinds of natural conditions. So the development of agriculture was very slow. Through the 19th century, the usage 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.

Observe shows that, amongst all the measures to extend the agricultural production, the role played by chemical fertilizers is 40% to 65%. On the basis of the booming within the petrochemical industry, synthetic ammonia and urea have realized giant-scale production, which makes the output of chemical fertilizer occupy a large proportion in the chemical products. In 1985, the total output of chemical fertilizer on this planet amounted to approximately one hundred forty million ton, which made it become one of many bulk chemical products. In recent years, the development of nitrogen, phosphorus and potassium compound fertilizer and trace elements fertilizer has additional meet the demands of various soil constructions and totally different crops.

In the early period, folks used natural animals, plants and minerals to prevent and treat crop pests and diseases. Until the late 19th century, after the formation of contemporary chemical business, individuals began to use arsenic preparation to kill beetles on potato, and use Bordeaux combination to forestall and treat downy mildew on grapes, in order that agriculture started a new era of chemical prevention and treatment. Throughout the Nineteen Forties, lots of pesticides and herbicides, comparable to organic chlorine, natural phosphorus, have been produced and widely utilized in agriculture, forestry, animal husbandry and public health. Nevertheless, a few of the pesticides throughout this period had been rich in residues or poison, which caused ecological pollution, so they had been banned by many countries.

Lately, a number of efficient, low-residue, low-toxicity pesticides have been developed, including 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 out to be essentially the most active areas in pesticide research currently.

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