追施无机肥料是绿枝扦插中的重要技术措施,但是追施的最好种类一直未确定。一般认为,钾肥的较好形式是硫酸盐,在有的研究中,发现在抗寒苹果上,施用氯化钾比硫酸钾的效果更好,这种特性对绿枝扦插也有重要意义。为了明确不同形式钾肥的效果,我们于1979—1981年在57—490株绿枝扦插砧木苗上进行了试验。为刺激根的形成,于6月份将绿色插条浸泡在 Topdressing inorganic fertilizers is an important technical measure in green branch cutting, but the best species of topdressing has not been determined. Generally believed that the better form of potassium is sulfate, in some studies, found that the application of potassium chloride than potassium sulfate is better than potassium sulfate, this feature is also of great significance to the green branch cutting. In order to clarify the effect of different forms of potash fertilizer, we conducted experiments on 57-490 green shoot cutting stockings in 1979-1981. To stimulate the formation of the root, the green cuttings were soaked in June