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Many plants can be air-dried in hot, dry weather. However, if conditions are cool and/or humid, consider using an oven set to a fairly low temperature, of about 150º F. (65º C). A convection oven, or specially designed dehydrator would be ideal, but you should be able to get good results with most standard ovens too.
Chives (Allium schoenoprasum) is a fine-leaved relative of Onion (A. cepa) and Garlic (A. sativum), in the Onion Subfamily (Allioideae) of the Amaryllis Family (Amaryllidaceae). It is native to much of Europe, temperate Asia, Japan, Sakhalin, and northern North America.
All parts of the Chives plant are edible to humans, but the slender leaves are the part most commonly used as a culinary herb.