防治苹果树腐烂病,历年来多采用石硫合剂、碱面水、硫酸铜、代森铵等药物作病斑治疗剂,复发率较高。汞平液效果虽好,但残毒问题严重。因此,当前果品生产上急需研制代替汞制剂的安全有效药剂。 1971年以来,我所科技人员在五莲县和贫下中农组成“三结合”小组,在当地党委领导下,进行药剂对比试验,评选出复方内疗素(每毫升1,000单位內疗素加2％硫酸铜),疗效高于其他药剂。1973年在5个果园试点;1974年扩大到福山等地15个果园示 Prevention and treatment of apple tree rot disease over the years more use of lime sulfur mixture, alkali surface water, copper sulfate, ammonia and other drugs for lesion treatment agent, a higher recurrence rate. Mercury flat liquid effect is good, but the residue problem is serious. Therefore, the current fruit production urgently needs to develop a safe and effective substitute for mercury preparations. Since 1971, our scientific and technical personnel formed a “triple combination” group in Wulian County and underdeveloped middle peasants under the leadership of local party committees to carry out drug comparison tests and selected endotoxin (1,000 units of endothelin plus 2% Copper sulfate), the effect is higher than other drugs. Pilot in five orchards in 1973; expanded to 15 orchards in Fukuyama in 1974