南郑是全国油茶分布的北缘,是陕西油茶主产区。据林业区划调查,有油茶林2.5万多亩,其中成片纯林近1万亩,年产油茶籽14万多公斤,最高年产达15万多公斤(1978年)。多年来经综合改造,全县70%的油茶林达到南方油茶产区中等或中等偏下水平,针对这种状况,提出改造油茶低产林应采取的 Nanzheng is the northern margin of the distribution of Camellia, the main producing area of ​​Shaanxi Camellia. According to the survey of the forestry zoning, there are more than 25,000 mu of Camellia oleifera forest, of which nearly 10,000 mu are made of pure forest, with an annual output of more than 140,000 kilos of camellia seeds and a maximum annual output of more than 150,000 kilos (1978). Over the years through comprehensive transformation, 70% of the county Camellia oleifera tea production areas to reach the southern or middle-lower level, in view of this situation, put forward to transform low-yield Camellia should be taken