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种植面积以亩为单位不规范，面积单位用亩国家于１９９２ 年已取消，但中国习惯如此，用公顷许多不好表达。
The acreage of acreage is not standardized, and acreage of acreage was canceled in 1992. However, China is accustomed to this and expresses it in many hectares.