The Influence Of Nutirtion On The Photosynthesis And Growth Of Chlorella Sp.

The change of nutrient effect primary productive.The effect of different nutrient and P recovery on the chlorophyll fluoreseence and growth and pigment content of Chlorella sp.,were investigated.The cultures were grown at (22±1)℃,the light intensity was 40001x., under a 12:12 light:dark cycle. In order to find out the optimum growth consistency. Result showed that:1. Chlorella sp.had better tolerated of high levels of N (10.56 mmol/L).For Chlorella sp.,the valres of chlorophyll florescence,cell growth and pigment content.all reached their highest values at 10.56 mmol/L.2. For Chlorella sp,the effect of high concentration of P(434.5μmol/L)is complex, the value of chlorophyll florescence increased with the increase of P concentrations,reached their highest at 434.5μmol/L,but cell growth and pigment content reached their highest at 36.2μmol/L.3. For chlorophyll florescence of Chlorella sp, the influence of low P (3.6μmol/L)more sharper than low N(0.088mmol/L). For in the condition of low P, the chlorophyll florescence maintain a high rate of decline.4. The effect of low N on the cell growth and pigment content more marked.low N,the cell growth and pigment content singificant increases serious than other groups.While there were not significant differences between low phosphate and others.5. In condition of high leave of NP(10.56 mmol/L/0.4345mmol/L), the chlorophyll florescence,cell growth and pigment content all increase higher than others.While,leave of low NP(0.088mmol/L/0.0036 mmol/L), the chlorophyll florescence,cell growth and pigment content significant lower than others.6. The low P stress could recover. The chlorophyll fluorescence parameters showed rapid recover following P addition,while the cell growth and pigment content showed recover after one day.So chlorophyⅡwere more perceptive than cell growth and pigment content.