中国农业科学院蔬菜研究所在西安市跃进公社先锋大队设的农村基点人员,遵照毛主席“自力更生,艰苦奋斗”的教导,同该大队植保小组协作,在医疗卫生系统同志帮助下,经过多次试验,用敌百虫与火碱土法合成敌敌畏,杀虫效果良好。方法是:先将二斤纯敌百虫溶解在十三斤水中,将半斤火碱(氢氧化钠)溶解在一斤三两水中,(两者应先加少量温水徐徐溶解后再行稀释),待两种溶液的温度均降到 Institute of Vegetables, Chinese Academy of Agricultural Sciences in Xian, Yuejin commune Pioneer Brigade set up rural base point personnel, in accordance with Chairman Mao “self-reliance and hard work” teaching, with the brigade plant protection team collaboration, with the help of the medical and health system comrades, after many tests , With trichlorfon and caustic soda synthesis of dichlorvos, insecticidal effect is good. The method is as follows: firstly dissolving two kilos of pure trichlorfon into thirteen pounds of water, dissolving half a kilo of caustic soda (sodium hydroxide) in thirty-two pounds of water, (both of them should be diluted with warm water and then dissolved slowly ) Until the temperature of both solutions have dropped to