良种是高产优质的基本条件。因此,引进、驯化、繁育和推广良种,能取得费省效宏的效益,在某种意义上可以说是“一本万利”。从我们叙永引种的茶树良种观测,可见一斑。丹岩乡中坝茶场,地处山丘地带,海拔500—700米,年均气温17℃,年积温为5000—6000℃,年降雨量1200—1300mm,年日 Varieties are the basic conditions for high yield and quality. Therefore, the introduction of domestication, breeding and popularization of improved varieties can achieve the macroeconomic benefits of efficiency and efficiency. In a sense, it can be said to be “a benefit.” It is evident from the observation of the fine varieties of tea trees that we introduced from Syria. Dan Yanxiang Zhongba Chachang, located in the hills, 500-700 meters above sea level, with an average annual temperature of 17 ℃, annual accumulated temperature of 5000-6000 ℃, the annual rainfall of 1200-1300mm, annual