不同时期除袋对果品质量影响很大。从本试验的 7个除袋期来看 ,表色变化呈一定规律性 ,即无论何时除袋 ,5天内果实上色速率最快 ,同时阴雨过后的晴天高温差加快上色速率。除袋期早晚对果实折光糖影响不大 ,但过早除袋花青苷吸收度低 ,并有退色表现 ,过晚除袋花青苷吸收度尚未形成高峰。试验中 9月 2 5日和 9月 30日除袋处理的果皮花青苷吸收度及表色都呈峰值 ,色相为浓红色 ,此期间除袋效果最佳 Bag removal in different periods of great impact on the quality of fruit. From the seven trials except the bagging period, the color change showed a certain regularity. That is, the fruit coloration speed was the fastest in 5 days and the coloration speed in the sunny days after rainy weather, no matter when the bag was removed. In addition to bagging sooner or later on the fruit refraction little effect, but too early to remove bag anthocyanin absorption is low, and fade performance, except for bag anthocyanin absorption has not yet formed a peak. On September 25 and September 30, the anthocyanin absorption and the color of the peel had a peak value and the hue was heavy red. During this period, the effect of removing bags was the best