果穗套袋是简便的防鸟害方法，同时也防病虫、农药、尘埃等对果穗的影响。但灰喜鹊、乌鸦等大嘴巴的鸟类，常能啄破纸袋啄食果子，随后那些麻雀等小嘴巴的鸟儿再雪上加霜，被啄食过的水果又极容易发生区域面积内的病虫害。因此一定要用质量好，坚韧性强的纸袋。
Ear bagging is a simple method to prevent bird pests, as well as the effects of diseases, pests, pesticides and dust on ear. However, birds with big mouths such as grey magpies and crows can often peck paper bags and eat fruits. Then those birds with small mouths such as sparrows make things worse. The pecked fruits are very prone to diseases and pests in the area. Therefore, we must use paper bags with good quality and strong tenacity.
在鸟类较多的地区可用尼龙丝网袋进行套袋，这样不仅可以防止鸟害，而且不影响果实上色，但是相对成本较高。同时套袋只能对葡萄，苹果，梨等有效果，对樱桃，蓝莓等不太适应。
In areas with more birds, nylon mesh bags can be used for bagging, which can not only prevent bird damage, but also do not affect fruit coloring, but the relative cost is high. At the same time, bagging can only be effective for grapes, apples and pears, but not for cherries and blueberries.