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编辑同志:我对贵刊去年第22期介绍的喷施200ppm浓度的亚硫酸氢钠能使青椒、菜豆、黄瓜等蔬菜增产的技术很感兴趣,但药剂的配制和施用方法不甚清楚,请编辑同志能否再详细介绍一下。海城县感王镇东粮村马源恒、赤峰市林东二小.杨树立
Editor’s Comrade: I am very interested in the technology of spraying 200ppm sodium bisulfite to increase the yield of green peppers, beans, cucumbers and other vegetables introduced in your No. 22 last year. However, the formulation and application methods of pharmaceuticals are not clear enough. Please Editors can explain in detail. King County, Haicheng County, Wang Zhen Ma Yuanheng sense of food, Chifeng City, East Lin small two