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对新红星苹果不同枝类叶片叶绿素含量和ａ／ｂ 值变化进行了测定，结果表明：无果短枝、叶丛枝和发育枝中部叶的叶绿素含量变化规律相似，有果短枝叶有一定差异；无果短枝、叶丛枝、发育枝中部叶和有果短枝叶的ａ／ｂ 值的变化规律基本一致；叶绿素含量以无果短枝叶最高，其次为有果短枝和叶丛枝叶，发育枝中部叶最低；年周期中各阶段叶绿素含量和ａ／ｂ 值存在一定的差异
The changes of chlorophyll content and a / b value of different branches of New Star apple were studied. The results showed that the changes of chlorophyll content were similar in the branches of non-fruit, ; The change rules of a / b value of no-shrub, leaf-thick branch, middle branch of developing branch and fruiting branch of short branch are basically the same; the content of chlorophyll is the highest with no-fruit short branch, followed by fruit with short branch and leaf- The middle leaves of developing branch were the lowest. There were some differences in chlorophyll content and a / b value in different stages of annual cycle