应用农药“3911”浸、拌棉种,能有效地推迟棉蚜为害期,这一防治措施已为晋南棉区广大群众所接受。据1965年芮城、永济、临猗、运城、河津、曲沃、绛县、闻喜、临汾等9县统计,“3911”浸、拌种面积达到35万8千亩,约占上述县分棉田总面积的24％。“3911”处理棉种的方法药剂为天津农药厂生产的75％甲拌磷(3911)油乳剂。处理方法,主要有闷种、浸种、拌种、颗粒剂等四种。 (一)闷种。有两种作法:一种是先在500 Application of pesticides, “3911” soaking, cotton seedling can effectively delay the cotton aphid infestation period, this control measures have been accepted by the broad masses of Jinnan cotton area. According to the statistics of 9 counties including Ruicheng, Yongji, Linqu, Yuncheng, Hejin, Quwo, Jiangxian, Wenxi and Linfen in 1965, the planting area of ​​“3911” reached 358,000 mu Divided by 24% of the total area of ​​cotton fields. The “3911” cotton seed treatment method of pesticide factory in Tianjin pesticide production of 75% phorate (3911) oil emulsion. Treatment methods, mainly nausea, soaking, seed dressing, granules and other four. (A) boring species. There are two ways: one is first at 500