山楂保花保果技术山楂生理落果比较严重，笔者采取以下保花保果技术提高了山楂着果率。１花前复剪通过花前复剪调整叶芽和花芽的比例为３１，有利于提高着果率。２花前追肥开花前在树盘下开浅沟追施以氮为主的化肥，初结果树每株０．２５～０．５ｋｇ，盛果树每株１～２．... Hawthorn Paul fruit preservation technology Hawthorn Physiological drop more serious, I take the following flower Paul fruit technology to improve the hawthorn fruit rate. 1 pre-scissors complex cut through the pre-scion adjustment leaf buds and flower bud ratio of 31, is conducive to improving the fruit rate. 2 flowers top dressing before flowering in the tree under the open shallow trench topdressing nitrogen-based fertilizer, the initial result tree 0.25 ~ 0.5kg per plant, fruit trees per plant 1 ~ 2. ...