根据最近Hall发表的美国使用杀虫剂的近况,将其中主要部分摘录如下:美国全年用药量估计约225,000,000磅(工业纯),其中主要包括有机氯、有机磷、无机及植物性杀虫剂,不包括熏蒸剂及药剂配方中的填料、乳化剂、硫黄及有机溶剂等。 这些杀虫剂每年用在林地的有1,723,000磅,占 Based on the recent developments in the United States on the use of insecticides by Hall, an extract of the major sections is as follows: The U.S. annual dose is estimated at about 225,000,000 pounds (industrial grade) of which mainly include organochlorines, organophosphates, inorganic and botanical insecticides , Does not include fumigants and pharmaceutical formulations of fillers, emulsifiers, sulfur and organic solvents. Each year these insecticides are used in woodlands, with 1,723,000 pounds