Here are some directions from editors at the National Gardening Association.
以下是美国园艺协会编辑们给出的一些指导办法。
First, dry the onions in the sun for a day or so. Then bring them out of direct sun for two to three weeks. Spread them out in any warm, airy place that is covered. Or cover the onions with a light cotton sheet held in place with stones along the edge.
首先，把洋葱在日光下晾晒一到数天，然后置于阳光无法直射的地方阴干两到三周。把它们摊开到任何有遮盖物的通风、保暖的地方。或者用棉布盖好洋葱，并把棉布边缘用石头压住。
The sheet will keep the sun from burning the bulbs. Don't worry about rain. And do not use a plastic or canvas sheet. Heavy coverings will trap moisture and keep the onions from drying fully.
棉布可以防止太阳把洋葱完全晒干。不要担心下雨，不要使用塑料或帆布覆盖。严实覆盖物可以锁住水分防止洋葱完全晒干。
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After curing the onions, you can hang them indoors in mesh bags to dry even more. There should be no wet spots on the onions when they are put in storage. Editors at the National Gardening Association say the longer onions are cured, the better they will keep.
干燥后的洋葱可以装入网袋挂在室内使其更干一些。在洋葱放入储藏室之前，必须确保洋葱外表上没有湿斑。美国园艺协会的编辑们表示，洋葱干燥时间越长，储存时间也越长。
Some people cut off the top leaves before curing onions. If you do that, do not cut the leaves any closer than two and a half centimeters from the bulb.
一些人在洋葱干燥前剪去鳞茎顶部的叶子。在剪叶子时，不要剪掉鳞茎附近2.5厘米以内的叶子。
