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内吸杀虫剂涂茎防治棉蚜、棉铃虫是一种行之有效的施药方法。但由于缺乏理想的施药器具相配合,采用土法涂药不便于操作,工效低,药液易流失,涂药不均匀,防治效果不稳定,推广面积一直不大。为此,我们于1982年初设计了棉花涂药器,并在济南市塑料十三厂投入生产。1982～1983年共生产三万余套,供山东、河北省七个地、市的棉区试用。经两年,应用面积已达二十余万亩。结构与原理:该器具为全塑料手持式,总长80公分,容积为200毫升,形状及结构见结构图。其原理是利用液体受地心引力的作用向
Spraying insecticide stalk control cotton aphid, cotton bollworm is an effective method of application. However, due to the lack of ideal applicator, the application of soil coating method is inconvenient to operate, the working efficiency is low, the liquid is easily lost, the application is uneven, the control effect is not stable, and the promotion area has not been large. To this end, we designed a cotton applicator in early 1982, and put into production in Jinan City Plastics 13 Factory. From 1982 to 1983, a total of more than 30,000 sets were produced for trial in the cotton districts of Shandong and Hebei Provinces and cities. After two years, the application area has reached more than 200,000 mu. Structure and principle: The device is all plastic hand-held, total length of 80 cm, volume of 200 ml, the shape and structure, see the structure. The principle is the use of liquid by the role of gravity to