我国是一个农药生产和应用的大国,2007年农药总产量达173.1万吨(折百计),生产原药品种有313个,其中具有中国自主知识产权的产品仅13个,占4.15%。在2600多家农药企业中,生产的大吨位品种仍然以仿制品种、老品种为主。这一方面是由于农药创制本身难度大,周期长,成本高;再一方面是农药作为一类特殊 China is a large country in the production and application of pesticides. In 2007, the total output of pesticides reached 1,731,000 tons (out of hundreds), with 313 kinds of original medicines manufactured, of which only 13 were products with independent intellectual property rights in China, accounting for 4.15% of the total. In more than 2,600 pesticide companies, the production of large tonnage varieties are still imitation varieties, mainly the old species. This is due to the difficulty of pesticide creation itself, the long cycle and the high cost. On the other hand, pesticide is a kind of special