磷的有效性对菜豆生理生态特征的影响

Effects of Phosphorus Availability on Characteristics of Physiological Ecology of Common Bean( Phaseolus vulgaris L )

研究了生长在３种不同磷水平下６种不同基因型菜豆的多项生理生态指标．结果表明：①Ｐ水平显著影响菜豆的光合、蒸腾、气孔导度、叶磷浓度、光能和水分利用率、磷利用率及生物量等；②在同一磷水平下，不同基因型菜豆的光合、气孔导度、光能和水分利用率显著不同；③在各基因型中。

P deficiency was often a major factor of reducing bean's output Six genotypes of common bean grown at 3 different P levels were compared for the their characteristics of physiological ecology It was concluded that: ① P supply had very outstanding effects on common bean's photosynthesis capacity, transpiration rate, stomatal conductance, leaf phosphorus, SUE, WUE, PUE and biomass( P< 0 01); ② at the same P level, different genotypes' stomatal conductance, SUE, WUE, biomass and etc were very dominant different ( P <0 01); ③ among these genotypes, G2424 had the highest ability of tolerating low P availabilty.