'''高级肥料''' is a [[Fertilizer]] that improves the chance to grow a [[Crops#Crop Quality|quality crop]]. It can be [[Crafting|crafted]] or purchased for {{price|150}} from [[Pierre's General Store]] beginning in year 2. It may also occasionally be sold by the [[Traveling Cart]] (in any year) for {{tprice|10}}. Thirty Quality Fertilizer are the reward for completing the {{Bundle|5000||y}}.
Quality Fertilizer must be placed on tilled soil ''before'' a seed has sprouted.
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高级肥料必须在种子发芽之前放置到土壤方格之中。
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Quality Fertilizer only affects the basic harvest, which means that extra crops gained at harvest ([[Potato|Potatoes]], [[Blueberry|Blueberries]], [[Cranberries]], etc.) will be of regular quality.