1.合理选袋 选用外黄白、内黑色的双层袋;或外层袋外面为灰色、里面为黑色的,内层袋为红色的双层袋,对增强着色效果显著。袋的规格要求在23×17cm以上,因富士苹果的果形指数小,宜选用宽一些的纸袋。 2.适时套袋 套袋应在落花后3～5周内完成。过早,果柄细弱柔软,纤维化程度低,易落果,过晚则达不到套袋的目的。 3.套袋方法 1. Reasonable selection of bags outside the yellow and white, black double bag; or outer bag outside the gray, which is black, the inner bag is a red double bag, to enhance the coloring effect is significant. Bag size requirements in 23 × 17cm or more, because Fuji Apple fruit shape index is small, should choose a wider number of paper bags. 2. Timely bagging bagging should be completed within 3 to 5 weeks after falling. Premature, delicate stems soft, low degree of fiberization, easy to drop fruit, too late to reach the purpose of bagging. 3. Bagging method