六六六等高残毒的有机氯农药,是防治松毛虫幼虫的有效药剂,但由于其具高残毒,对环境污染严重,同时,松毛虫又对六六六产生了抗药性。因此,寻找高效低毒低残毒的新农药,是生产上需要解决的课题。为此,我们75年8—9月,在云南省云县和凤庆县,分两地同时进行新农药的药效试验。此次试验所用药剂种类为下表。 Organochlorine pesticides with a high residue rate of 666 are effective pesticides for controlling pine caterpillar larvae. However, due to their high residual toxicity, they are seriously polluted by the environment. At the same time, the pine caterpillars have also developed resistance to bHC. Therefore, looking for a new pesticide with high efficiency, low toxicity and low residue is a problem to be solved in production. For this reason, in August-Seventy-Seventy-75 in 75 years, we conducted the trial of the efficacy of new pesticides in both Yunnan and Yunfeng counties. The types of drugs used in this test are as follows.