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本文根据水培法的结果,讨论了铝液(0—90ppm)对茶树生长和养分吸收的影响,结果如下: 1、铝液浓度在5—15ppm范围内对茶树根部生长有促进效果,但对地上部的影响不明显,铝液浓度甚至高达30—90ppm,亦未发现茶树任何部分生长受阻。可以断定,茶树也是一种好铝植物。 2、随着铝液浓度上升,铝明显积累于根部,地上部也渐渐增加,可以说,铝由根部向地上部移动很困难。 3、经铝处理,根部对磷的吸收量的增加,铝液浓度为15ppm时最高,根部和地上部的氮铁含量变化不大。可见磷、氮和铁很难向地上部移动。 4、随着铝液浓度上升,根部对钙镁钾的吸收量降低,而向地上部移动之量增加,这种倾向,以钙显著,镁次之,钾最小。 5、Ca/Al和Mg/Al含量的克分子比,根部因铝液处理而明显降低,而地上部降低较小。据此,我们认为钙镁与铝之间存在明显的拮抗作用。
Based on the results of hydroponics, the effects of aluminum liquid (0-90ppm) on the growth and nutrient absorption of tea plant were discussed. The results are as follows: 1. The effect of aluminum liquid concentration on root growth of tea plant was promoted in the range of 5-15ppm, The effect of aboveground parts is not obvious, the concentration of liquid aluminum is even as high as 30-90ppm, and no growth of any part of tea plant is found. It can be concluded that tea is also a good aluminum plant. With the increase of molten aluminum concentration, aluminum apparently accumulated in the roots and the ground aboveground gradually increased. It can be said that the movement of aluminum from the roots to the aboveground was very difficult. 3, the aluminum treatment, the root of phosphorus uptake increased, the highest aluminum concentration of 15ppm, root and shoot nitrogen content did not change much. Visible phosphorus, nitrogen and iron is difficult to move to the ground. With the increase of liquid aluminum concentration, the absorption of calcium, magnesium and potassium in the roots decreased and the amount of calcium moved to the upper part increased. This tendency was marked by calcium, followed by magnesium and potassium. 5, the molar ratio of Ca / Al and Mg / Al was significantly decreased at the root due to the treatment with aluminum and the decrease at the shoot was smaller. Accordingly, we believe that there is a significant antagonism between calcium and magnesium and aluminum.