【摘要】 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。更多还原

【Abstract】 A greenhouse pot experiment was conducted to study the effects of applied P and Zn on the uptake of Mn,Cu and Fe by corn seedlings.The soil used was a calcareous drab soil collected from Taigu,Shanxi province. The experiment results showed that the amount of Mn and Cu in the corn seedlings increased straightly with the increase of the applied P,while the concentrations of Mn and Cu in corn plants decreased with the increase of the applied F.This was considered as the"dilution effect".With the increase of Zn application,the uptake of Mn and Cu in the root of the corn plants increased in a quadratic pattern,but the uptake of Mn and Cu in the upper parts of the plants increase in a parabolic pattern.The effect of P application on the uptake of Fe in the top of corn plants was significantly remarkable and the pattern was parabolic.更多还原