东北地区的大豆、甜菜在幼苗时期时常遭受几种害虫的侵袭,造成不同程度的毁种或缺苗,严重影响生产。作者等利用666的内吸传导作用来防治大豆和甜菜的苗期害虫,曾进行一系列的室内和田间试验,获得了良好的结果,1957年在吉林省农业厅的领导和支持下,在榆树县进行大面积的生产试验。作为推广 Northeast soybean, beet often suffered several pests in the seedling stage of attack, resulting in varying degrees of deforestation or lack of seedlings, seriously affecting the production. The author used 666’s internal absorption conduction to control soybean and beet seedling pests, conducted a series of indoor and field experiments and obtained good results. In 1957, under the leadership and support of Jilin Provincial Department of Agriculture, County for large-scale production test. As a promotion