Columbia Valley Was Established 1984, it's Washington's largest viticultural region.
哥伦比亚谷产区崛起于1984年，是华盛顿州最大的葡萄种植区。
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Subsequently, categories designating less-distinguished viticultural regions have been delimited.
随后， 类别指定不太著名的葡萄栽培地区已划定。
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Winemaking techniques are a factor also as are the viticultural techniques of the vineyard, such as dry irrigation or minimal or non use of pesticides.