红星苹果品质优良 ,我国有一定的栽培面积。该品种成花较难 ,生产上常用主干环剥、喷施多效唑等措施人工促进成花。红星苹果因坐果率低 ,致使产量也低。为了在人工促花后提高大量开花的红星苹果幼树提高坐果率 ,我们进行了此项试验。1　材料和方法本试验在河北省武安市赵店果园 Red Star apple quality, our country has a certain cultivation area. The varieties become more difficult to spend, the production of the main trunk girdling spray paclobutrazol and other measures to promote artificial flower. Red Star apple fruit setting rate is low, resulting in low yields. We conducted this experiment in order to increase the fruit setting rate of a large number of flowering Red Star apple trees after artificial flower sprouting. 1 Materials and methods This experiment in Wu’an City, Hebei Province, Zhao shop Orchard