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1965年我们选用南开大学元素有机化学研究所试制的50%的可湿性“除草剂一号”粉剂,进行苗圃杂草的防治试验。苗圃的土质为沙质壤土,土层深厚,肥力中等,土壤湿滑,pH 值为7.0—7.5。采用土壤表层处理方法,在幼苗期分别将药剂配制成毒土和药液洒于苗床床面,现将其结果分述如下:一、药液法;5月20日用手提喷雾器每平方米苗床内喷(1/400)浓度的药剂180毫升(每亩施用原粉300
In 1965, we selected the Nankai University Institute of Elemental Organic Chemistry 50% of the wettable “Herb No. 1 ” powder for nursery weed prevention and control tests. Soil nursery sandy loam, deep soil, medium fertility, soil slippery, pH 7.0-7.5. Soil surface treatment methods, respectively, in the seedling stage preparation of toxic chemicals and liquid sprinkled seedbed bed, now the results are described as follows: First, liquid method; May 20 with a portable sprayer per square meter of seedbed Spraying (1/400) concentration of the agent 180 ml (300 yuan per acre of raw powder