近三、四十年来,化学农药的使用,在确保农业丰产与预防传染疾病等方面起了不可磨灭的作用,但由于长期的连续使用化学农药,也确实带来了不少问题。我们对化学防治中所产生的问题,既不能等闲视之,又不能掉以轻心;要研究分析,正确对待,加以解决。 In the recent three or four decades, the use of chemical pesticides has played an indelible role in ensuring high agricultural yields and preventing infectious diseases. However, long-term continuous use of chemical pesticides has indeed caused many problems. We can not afford to ignore the problems arising from chemical prevention and treatment without paying any attention to them. We should study and analyze the matter properly and solve it.