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采用灰色关联分析法，对影响油菜产量的光合生理指标进行了分析。结果表明，影响油菜经济产量各光合生理指标的关联序为：叶绿素总量（ｒ５＝０．６３５８）＞叶绿素ａ含量（ｒ３＝０．６１１８）＞叶绿素ｂ含量（ｒ４＝０．５９４８）＞阴天光合速率（ｒ２＝０．５８２７）＞叶绿素ａ／ｂ比值（ｒ７＝０．５７６２）＞晴天光合速率（ｒ１＝０．５７３７）＞类胡萝卜素含量（ｒ６＝０．５４９９）。影响油菜生物产量的各光合生理指标的关联序为：叶绿素总量（ｒ５＝０．７８１３）＞叶绿素ａ含量（ｒ３＝０．７３１１）＞叶绿素ｂ含量（ｒ４＝０．７１５２）＞晴天光合速率（ｒ１＝０．７０２３）＞叶绿素ａ／ｂ比值（ｒ７＝０．６７１５）＞阴天光合速率（ｒ２＝０．６４９９）＞类胡萝卜素含量（ｒ６＝０．６３６６）。影响油菜经济产量和生物产量的主导因素是叶绿素含量。
The gray correlation analysis method was used to analyze the photosynthetic physiological parameters that affect the yield of rapeseed. The results showed that the correlation order of photosynthetic physiological indices affecting the economic yield of rapeseed was total chlorophyll (r5 = 0.6358)> chlorophyll a content (r3 = 0.6118)> chlorophyll b content (r4 = 0.5948) (R2 = 0.5827)> chlorophyll a / b ratio (r7 = 0.5762)> sunny photosynthetic rate (r1 = 0.5737)> carotenoid content (r6 = 0.5499). The correlation order of photosynthetic physiological indexes that affect the bio-yield of rapeseed was: total chlorophyll (r5 = 0.7813)> chlorophyll a content (r3 = 0.7311)> chlorophyll b content (r4 = 0.7152)> sunny photosynthetic rate (R1 = 0.7023)> chlorophyll a / b ratio (r7 = 0.6715)> cloudy photosynthetic rate (r2 = 0.6499)> carotenoid content (r6 = 0.6366). The dominant factor affecting the economic yield and bio-yield of rape is chlorophyll content.