许多果农对红富士苹果套袋的关键技术把握不住，套袋果外观品质不理想，且风味淡、口感差，甚者日灼烂果较多，整体套袋效果不良。建议生产中加强常规栽培管理，针对具体的存在问题积极采取应对措施，提高套袋生产效益。 问题一：磷、钾比例偏低，配方施肥不尽合理 多数果农 Many fruit growers can not grasp the key technology of red Fuji apple bagging, the appearance quality of bagged fruit is not ideal, and the flavor is light, the taste is poor, or worse, the sunburn is more, the overall bagging effect is not good. Proposed to strengthen the regular cultivation and management of production, for the specific problems to actively take countermeasures to improve bagging production efficiency. Problem one: phosphorus and potassium ratio is low, the formula fertilization is not reasonable Most farmers