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覆膜旱作对稻田土壤有效Fe、Mn、Zn、Cu含量的影响

Changes of available Fe, Mn, Zn and Cu contents among different layers of non-flooded paddy soils with ground mulching.

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【作者】 刘铭吴良欢路兴花张福锁

【Author】 LIU Ming~1, WU Liang-huan~1, LU Xing-hua~1, ZHANG Fu-suo~2 (1. Dept. of Resource Sciences, Zhejiang University, Hangzhou 310029, China; 2. College of Resources and Environment, China Agricultural University, Beijing 100094, China)

【机构】 浙江大学资源科学系中国农业大学资源与环境学院 浙江杭州310029浙江杭州310029北京100094

【摘要】 以常规水作和裸地旱作作对照,对覆膜旱作栽培条件下稻田0~60cm土层土壤有效Fe、Mn、Zn、Cu含量变化进行了研究.结果表明:与常规水作相比,覆膜旱作稻田土壤有效铁含量在0~10cm土层略有下降,10~20cm土层有所增加,20~60cm土层相差不大;0~15cm土层土壤有效锌的含量有所上升,而在15~60cm土层中趋向一致;0~15cm土层土壤有效Mn含量有所下降,有效Cu含量变化不大.与裸地旱作相比,覆膜旱作增加了稻田0~20cm土层中土壤有效铁、0~15cm土层中有效锌含量,降低了0~5cm土层中有效锰含量,有效铜含量变化不大.

【Abstract】 The change in amount of available Fe, Mn, Zn and Cu in various layers (from depth of 0 to 60 cm) of non-flooded paddy soil with ground mulching were studied. Compared with conventional flooded soil, non-flooded film mulching slightly reduced the amount of available Fe in the 0-10 cm layer of the soil, increased it in the 10-20 cm layer and had almost no effect in the 20-60 cm layer. The technique increased the amount of available Zn in the 0-15 cm soil layer and reduced the amount of available Mn in the 0-15 cm layer, but did not affect the available Cu content. Compared with dryland soil, non-flooded film mulching increased the amount of available Fe in the 0-20 cm layer and available Zn in the 0-15 cm layer of the soil and reduced the amount of available Mn in the 0-5 cm soil layer, but the amount of available Cu in the 0-60 cm soil layer was almost unaffected.

【基金】 国家自然科学基金资助(39970146);农业部948项目(2003-Z53);浙江省科技厅重点项目(011102187)资助.
  • 【文献出处】 浙江大学学报(农业与生命科学版) ,Journal of Zhejiang University(Agric.& Life Sci.) , 编辑部邮箱 ,2004年06期
  • 【分类号】S511.048
  • 【被引频次】13
  • 【下载频次】155
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