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一、选题背景随着农业生产的发展和科学技术的进步,人们为了获得农业丰收,大量使用化肥、杀虫剂、除草剂等,甚至在高尔夫球场、足球场等也使用杀虫剂、除草剂。目前世界上生产使用的农药已达1300多种,其中大量使用的约250多种,化学农药年产量约220万吨。
I. Background of the Theme With the development of agricultural production and the advancement of science and technology, people also use pesticides, weeds and the like in golf courses, soccer fields, etc. in order to obtain abundant harvests of agriculture, make heavy use of fertilizers, pesticides and herbicides, etc. Agent. At present, there are over 1,300 kinds of pesticides used and produced in the world, among which about 250 are widely used and the annual output of chemical pesticides is about 2.2 million tons.