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温室条件下,以山西晋中地区的石灰性褐土和玉米为试验材料,研究土壤施磷、锌对玉米幼苗吸收锰、铜、铁的影响。结果表明:玉米幼苗对锰、铜的吸收量随着磷施用量的增加而正比增加。但植株体内的锰、铜浓度出现“稀释”现象即随着磷用量的增加植株体内锰、铜浓度降低。锌施用量增加,玉米植株地下部的锰,铜吸收量呈二次曲线形增加,但植株地上部的锰、铜吸收情形为抛物线性:土壤施磷、锌对玉米植株地上部铁的吸收影响极显著,为抛物线模式。
Under greenhouse conditions, calcareous cinnamon soil and corn in Jinzhong area of Shanxi Province were used as experimental materials to study the effects of phosphorus and zinc on the absorption of manganese, copper and iron in maize seedlings. The results showed that the uptake of Mn and Cu by maize seedlings increased proportionally with the increase of P application rate. However, the concentration of manganese and copper in the plant appeared “dilution ” phenomenon that with the increase of phosphorus dosage, the concentration of manganese and copper in plant decreased. The amount of Zn application increased, the amount of Mn and Cu uptake in maize plants showed a quadratic curve, but the absorption of manganese and copper in plant shoots was parabolic: the effect of phosphorus and Zn on the absorption of above-ground iron in maize plants Extremely significant, parabolic pattern.