缺铁和重碳酸盐胁迫对枳实生苗矿质元素的影响  

Effects of Iron Deficiency and Bicarbonate Stress on Mineral Nutrition in Poncirus Trifoliate

作　　者：王明元[1] 

机构地区：[1]华侨大学生物工程与技术系,福建厦门361021

出　　处：《北方园艺》2011年第18期9-11,共3页Northern Horticulture

基　　金：华侨大学高层次人才科研启动费资助项目(08BS410)

摘　　要：采用盆栽沙培试验,研究了缺铁及重碳酸盐胁迫对枳实生苗矿质元素及植株铁营养的影响。结果表明:pH 7.0和8.0的重碳酸盐胁迫提高了枳实生苗P、K和Ca的含量,降低了叶片Fe、Mg、Zn和Cu的含量;pH 8.0的重碳酸盐胁迫降低了根系三价铁螯合物还原酶以及叶片Fe/Mn与K/Ca的比值,提高了根系总酚含量,说明重碳酸盐胁迫严重降低柑橘铁营养。Effects of iron deficiency and heavy bicarbonate stress on mineral and iron nutriton of trifoliate orange were investigated with a sand culture. The results showed that the contents of P, K and Ca were increased under bicarbonate stress at pH 7.0 and pH 8.0,however,the contents of Fe,Mg,Zn and Cu were decreased. The accumulation of root ferric-chelate reductase activities,Fe/Mn and K/Ca ratios were decreased under bicarbonate stress at pH 8.0,opposite to the total phenolics,suggesting that iron nutrition in trifoliate orange were decreased by bicarbonate stress.

关 键 词：枳实生苗 重碳酸盐 K/Ca 

分 类 号：S567.19[农业科学—中草药栽培]