目前开展的油茶优树评选工作,在计祘产量方面是采用连续三年的产量作为依据进行评定的。我们在实践中认识到在荒芜状态下油茶是一个结实大小年明显的树种。虽然尽力选择那些大小年结实变幅小的植株作为优树,但结实大小年的差异仍然在所难免。又由于油茶的结实大小年间隔一般都是一年,因此,用连续三年的产量作为评选依据时,一株树在评选期中是两个大年还是两个小年,将会在产量上发生明显的差异,现就铜仁地区东风林场决选的油茶优树005号和010号为例,它们近四年的产量如下表: Currently carried out selection of Camellia oleifera trees, in terms of yield is calculated using three consecutive years of production as a basis for assessment. In practice, we realize that Camellia oleifera is an obvious tree species with a large annual size in the barren state. Although we try our best to choose the plants with small amplitude and small amplitude as the best tree, the difference between the years of solid and the small size is still inevitable. And because the annual solidity of Camellia is generally one year, so with three consecutive years of production as a basis for selection, a tree in the selection period is two or two years, will occur in the production The obvious difference is as follows. For example, Camellia Youtu No. 005 and No. 010 of Dongfeng Forest in Tongren Prefecture are listed as follows: