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Iron Content in Peashrub Affected by Phosphorus Application in Calcareous Soil
Author(s): 
Pages: 286-288
Year: Issue:  3
Journal: Rural Eco-Environment

Keyword:  柠条 施磷量 铁富集 石灰性土壤 生态重建;
Abstract: 通过盆栽土培试验,研究了石灰性土壤不同施磷量对小叶锦鸡儿(Caragana microphylla)柠条富铁的影响。结果表明,柠条地上部干重随着施磷量的增加而增加,增加量最大的是处理P3[施磷肥(以P2O5计)100 mg.kg-1],比处理P0(不施磷肥)增加10.8%~16.7%;在生长初期,低磷条件下柠条铁含量比高磷条件下高,但随着生长期的延长和生物量的增加,柠条铁含量在高磷条件下比在低磷条件下增加速度快,到第4次取样时(种子发芽后75 d)处理P3柠条铁含量达最高,为1 428.3 mg.kg-1;柠条地上部富铁总量以第4次取样时处理P3最高,达10.269 mg.盆-1。可见,柠条是铁矿区生态重建物种的良好选择。
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