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在五○年华北农业技术会议上,已确定石灰硫黄合剂、棉油皂、白面浆糊水、为除治麦棉火蜘蛛的有效药剂。尤其华北各地石灰及硫黄的产量丰富,取用便利,只要调制得法,效力就会很好。调制时主要在掌握熬制的技术。为了便于群众使用,沧县专署农场技术干部集体创作了一种土比重计。做法是用三至四寸长的细高粱稭杆一根,在杆的下端穰子内插入铁钉子一个(注意截高粱杆要时上面的,最好用快刀子割,别弄劈了),然后烫上黄腊,以免进水。做好后放在清水内,便能直立起
In 50 years of North China Agricultural Technology Conference, has identified lime sulfur mixture, cotton oil soap, white flour paste water, in addition to the effective treatment of wheat fire spiders. In particular, lime and sulfur throughout North China are rich in output and are easy to take and use. As long as they are well-regulated, their effectiveness will be very good. Modulation mainly in brewing technology. In order to facilitate the use of the masses, Cang County agency farm technicians collectively created a soil hydrometer. The practice is to use three to four inches long a thin sorghum straw, iron nail inserted in the lower end of the bar (note the cut above the sorghum when it is best to use a quick knife to cut, do not get split) Then hot yellow wax, so as not to water. Well done on the water, you can erect