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以成年罗脐树为试材，进行树体的光合、光照研究，结果表明，丰产稳产树较低产树和变产树在光合、光照方面有以下特点：树冠叶幕外层叶面积较大；叶幕中层光照状况较好；叶幕中层叶片净光合速率较高，在所有测定时期整株净光合速率均较高。
The results showed that the lower yield tree and translocation tree of high yield and stable yield tree had the following characteristics in photosynthesis and illumination: the outer leaf area of crown leaf curtain was larger The leaf mid-layer light condition was better. The net photosynthetic rate of mid leaves was higher, and the net photosynthetic rate of the whole plant was higher in all the measurement periods.