王树桐;梁魁景;王亚南;邹庆甲;曹克强;

• 1:河北农业大学植物保护学院河北省农作物病虫害生物防治工程技术研究中心
• 2:衡水学院生命科学学院

摘要(Abstract)：

以平顶海棠(Malus robusta Rehd.)为试验材料,以4个不同树龄苹果园的土壤为对象,研究了不同树龄苹果园土壤对再植平顶海棠幼苗生长的影响。结果表明,在前茬树龄为3、8、15和24 a苹果园土种植的平顶海棠幼苗比正茬土对照的平均株高分别减少31.22%、46.38%、57.66%和63.10%;再植平顶海棠幼苗地上部干质量分别减少0.96%、57.58%、76.88%和78.10%;地下部干质量分别减少40.38%、48.79%、64.03%和79.43%。在24 a生苹果树土壤中再植海棠幼苗校正发病率达到了72.73%,而在3 a生苹果树的土壤中再植海棠幼苗校正发病率只有18.18%。对不同树龄的苹果园土壤根际细菌和真菌群落结构的差异进行分析,其结果为,随着苹果树龄的提高,根际土壤中真菌种类和数量显著增加,而细菌的种类和数量则随着树龄的增加显著减少。

关键词(KeyWords)： 苹果再植病害;根际微生物;树龄;变性梯度凝胶电泳

Abstract:

Keywords:

基金项目(Foundation): 国家苹果现代产业技术体系(nycytx-08-04-01);; 公益性行业(农业)科研专项(200903004-42)

作者(Author): 王树桐;梁魁景;王亚南;邹庆甲;曹克强;

Email:

DOI: 10.13925/j.cnki.gsxb.2011.03.008

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