吕仁杰同志: 最近陆续收到由《中国棉花》编辑部转来各地群众来信,询问关于杀虫脒防治棉花害虫的有关问题,其中涉及致癌和安全使用问题。今就各地提出的有关问题,一并作复。杀虫脒是六十年代发展的一种有机氮杀虫剂,最早作为杀螨剂而问世,日本用于防 Comrade Lv Renjie recently received letters from the masses from the editorial departments of “China Cotton” recently asking questions concerning the prevention and control of cotton pests by chlordimeform, including carcinogenic and safe use. Nowadays, the relevant issues put forward by various places have been merited together. Chlordimeform is an organic nitrogen insecticide developed in the 1960s. It was first used as an acaricide and was used in Japan