Abstract:

The influence of acid-aluminum on the absorption and metabolism of the one-year-old chinese fir root and leaf was studied using isotope atom indicator ³²P with water culture. The results showed that after the treatment of the acid-aluminum(pH=3), the absorption of ³²P-inorganic phosphorus in root increased to 195% of the CK, the transport index of the ³²P-phosphorus in the leaf decreased from 43.0 to 20.7. The proportion of the ³²P-compounds in the root changed, ³²P-inorganic compounds increased to 175% of the CK, and ³²P-organic compounds, Lipid, DNA and RNA decreased to 55%,42%,36% and 40%, respectivily. The change of the proportion of the ³²P-compounds in the leaf was not evident, except the DNA.

Key words: Chinese fir, Acid-aluminum, Phosphrous, Absorption, Metabolism