农药是保证农作物优质、高产的重要农业生产资料。改革开放以来,我国农药工业发展迅速,现已形成包括原药生产、制剂加工、原料中间体、科技开发在内的工业体系。我国农作物年播种面积30多亿亩,病虫草害发生面积56亿亩次,每年由于病虫害损失粮食约15%、棉花25%￣30%、果品和蔬菜 Pesticide is an important agricultural means of production to ensure high quality and high yield of crops. Since the reform and opening up, China’s pesticide industry has developed rapidly, and now it has formed an industrial system that includes production of raw materials, preparation and processing of raw materials, intermediates of raw materials and development of science and technology. The annual planting area of ​​crops in China is more than 3 billion mu and the occurrence area of ​​pests and weeds is 5.6 billion mu. There are about 15% of grain loss and 25% ~ 30% of cotton loss due to pests and diseases every year. Fruits and vegetables