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日本现有茶园面积82万多亩.民间育种工作始于1868年(明治初期)。1919年(大政8年),设立农林省茶业试验场。这是日本茶树育种事业的起点。其后,奈良、静岗等县分别设立试验场.开始了有组织的茶树育种事业。1953年,农林省实施茶树品种登记制度。迄今为止,日本除农林省登记的32个茶树品种外,各县还育成了一部份良种.目前,日本茶树良种普及进度较快,已占全国茶园面积的48.4%.有的县达到了90%以上。现将日本主产茶县茶园面积、良种普及概况搜集整理如表一、二,供各地茶树育种工作者参考。
The area of existing tea gardens in Japan is more than 820,000 mu, and folk breeding began in 1868 (early Meiji period). 1919 (8 years of the Great Administration), the establishment of agriculture and forestry provinces tea industry test field. This is the starting point for Japanese tea tree breeding. Since then, test sites have been set up in Nara and Jingang counties, respectively, and the organized tea tree breeding project has started. In 1953, the Ministry of Agriculture and Forestry implemented the system of registration of tea varieties. So far, in addition to the 32 varieties of tea trees registered in Japan’s Ministry of Agriculture and Forestry, all the counties have also bred a portion of the improved varieties. At present, the popularization of tea seed varieties in Japan is rapid, accounting for 48.4% of the national tea plantation area. %the above. Now the main production Chayen tea plantation area in Japan, the status of thoroughbred popularization gathered as Table I, II, for tea farmers around the reference.