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作 者 ：高艳敏1;徐静1;高树清1;李广旭1;张琪静1;王斌2;徐有丽3

期 刊 ：植物营养与肥料学报 2006年 12卷 4期 页码：571-577

关键词：硅；高锰；苹果；粗皮病；

Keywords:silicon, high content of manganese, Internal bark necrosis, apple trees,

摘 要 ：为解决辽宁等地高锰引起苹果生理粗皮病发生的问题,2004年在盆栽脱毒富士幼苗上进行施锰的同时施硅与单施锰的试验,待叶、枝发生粗皮病后再施硅矫正。结果表明,本试验条件下施锰400.mg/kg的同时施硅400mg/kg,可安全有效防治粗皮病的发生;施锰400.mg/kg诱发叶片发病后,施硅400.mg/kg可较好地控制粗皮病的发生。施锰400.mg/kg枝干发病后施硅,对粗皮病的蔓延有一定控制作用,但效果不明显。随着施硅量增加,土壤速效钾含量提高,有效铁、有效锌含量降低,说明粗皮病的发生也与上述养分有关系。

Abstract:In order to address the problem of Internal bark necrosis(IBN) induced by high Mn content in Liaoning province,experiments involving simultaneous applications of Mn and Si were conducted on one year old virus-free Fuji apple trees.Further experiments using Si to correct IBN after its symptoms appearing on leaves and branches induced by earlier single Mn applications were also conducted.The results showed that the simultaneous application of Mn and Si both with the dosage of 400 mg/kg could effectively prevent Fuji trees from developing IBN. Application of Si at 400(mg/kg) could control the development of IBN in leaves and reduce the symptoms in branches previously induced by application of Mn at 400 mg/kg.However,the effect on branches was less obvious than that in leaves.With increasing application of Mn,soil extractable K and Ca increased,while extractable Fe and Zn decreased in soil,which indicated that the(incidence) of IBN may be also related to captioned nutritional levels in soil.

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