Over long time, human food and clothing depended primarily on agriculture. Whilst ever since the ancient time, agriculture had constantly relied on a lot of human labor, which was topic to various kinds of natural conditions. So the development of agriculture was quite slow. Throughout the 19th century, the use of agricultural machinery gradually improved the working conditions. Even so, in agricultural production, it was the application of chemical fertilizers and pesticides that genuinely elevated the agricultural output in per unit location.

Practice shows that, among all the measures to enhance the agricultural production, the role played by chemical fertilizers is 40% to 65%. On the basis of the booming in the petrochemical business, synthetic ammonia and urea have realized significant-scale production, which makes the output of chemical fertilizer occupy a significant proportion in the chemical goods. In 1985, the total output of chemical fertilizer in the globe amounted to roughly 140 million ton, which created it turn out to be one of the bulk chemical products. In current years, the development of nitrogen, phosphorus and potassium compound fertilizer and trace elements fertilizer has further meet the demands of diverse soil structures and diverse crops.

In the early period, individuals utilised natural animals, plants and minerals to avoid and treat crop pests and illnesses. Until the late 19th century, soon after the formation of modern day chemical industry, folks began to use arsenic preparation to kill beetles on potato, and use Bordeaux mixture to stop and treat downy mildew on grapes, so that agriculture began a new era of chemical prevention and therapy. Throughout the 1940s, a lot of pesticides and herbicides, such as organic chlorine, organic phosphorus, were produced and widely used in agriculture, forestry, animal husbandry and public well being. Even so, some of the pesticides in the course of this period were wealthy in residues or poison, which brought on ecological pollution, so they had been banned by several countries.

In recent years, a quantity of efficient, low-residue, low-toxicity pesticides have been developed, which includes pyrethroid, which is a bionic pesticide and will not pollute the environment. It has been put into industrial production. As a result, bio-pesticides have become the most active locations in pesticide analysis currently.

What’s a lot more, plastic film (such as high pressure polyethylene, linear low density polyethylene, and so on.) has been applied in modern day agriculture, which is utilised for mulching film or greenhouse seedlings. It can significantly increase the output of the crops, so it is now becoming popularized on a significant region.