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对蓖麻的生长发育过程中叶片数目、叶绿素含量、希尔反应活力、光合磷酸化活力和光合速率变化规律及其与产量、含油率关系进行了研究。结果表明，叶片数目增长呈“慢—快—慢”变化，快速增长期在主茎穗盛花期至第一分枝穗开花期；叶片叶绿素含量呈双峰曲线，在主茎穗果实灌浆期至第一分枝穗果实灌浆期其含量最高；叶绿体希尔反应活力和光合磷酸化活力在第一分枝穗开花期出现高峰值；叶片光合速率变化呈单峰曲线，在第一分枝穗果实灌浆期达到最高。在整个生育时期内蓖麻叶片数目、叶绿素含量、希尔反应活力和光合磷酸化活力呈负相关，生育后期则反之，从主茎穗开花到第二分枝穗盛花期光合指标分别与产油量呈显著和极显著正相关。
The changes of leaf number, chlorophyll content, Hill reaction activity, photosynthetic phosphorylation activity and photosynthetic rate, and the relationship between yield and oil content were studied during the growth and development of castor. The results showed that the number of leaves increased from “slow to fast to slow”, and the rapid growth period was from the main stem spike flowering to the first branch flowering; the leaf chlorophyll content presented a bimodal curve, The first branch tasted the highest content of grain filling at the filling stage. The response of chloroplast Hill reaction and photosynthetic phosphorylation peaked at the first branch spike; the change of leaf photosynthesis rate showed a single peak curve, The highest filling stage. In the whole growth period, the number of castor leaves, chlorophyll content, Hill reaction activity and photosynthetic phosphorylation activity were negatively correlated, while the late growth stage, on the contrary, from the main stem spike flowering to the second branch spike flowering photosynthesis indicators, respectively, and oil production Significant and significant significant positive correlation.