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中国农学通报 ›› 2014, Vol. 30 ›› Issue (27): 153-157.doi: 10.11924/j.issn.1000-6850.2014-0410

所属专题: 水稻

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不同措施对冷浸田土壤还原性物质含量及水稻产量的影响

张赓,李小坤   

  1. 农业部长江中下游耕地保育重点实验室/华中农业大学微量元素研究中心/华中农业大学资源与环境学院,华中农业大学资源与环境学院
  • 收稿日期:2014-02-21 修回日期:2014-02-21 接受日期:2014-04-24 出版日期:2014-10-15 发布日期:2014-10-15
  • 通讯作者: 李小坤
  • 基金资助:
    公益性行业(农业)科研专项经费项目“江南地区冷浸田治理技术研究与示范”(201003059-09);中央高校基本科研业务费专项资金“作物微量元素营养与微肥施用”(2011PY150);长江学者和创新团队发展计划“作物-环境互作机理及其调控”(IRT1247)。

Effects of Different Measures on the Concentration of Reducing Substances of Soil and Yield of Rice in Cold Waterlogged Paddy Field

  • Received:2014-02-21 Revised:2014-02-21 Accepted:2014-04-24 Online:2014-10-15 Published:2014-10-15

摘要: 研究明确不同措施对冷浸田土壤还原性物质含量及水稻产量的影响,以期为适宜改良剂的筛选和应用提供理论依据。田间试验设置优化施肥及不同措施(石灰、有机肥和秸秆)等6个处理,比较各处理对土壤氧化还原电位、还原性物质含量、水稻产量和养分吸收的影响。合理施肥可以显著地降低冷浸田土壤还原性物质总量,并提高水稻产量,增幅为26.2%。石灰和有机肥对水稻产量无显著影响;秸秆还田可显著提高土壤氧化还原电位,降低土壤还原性物质浓度,增产14.2%。石灰和秸秆混合施用不仅显著提高土壤Eh,而且降低土壤活性还原性物质和Fe2+含量,降幅分别为40.0%和49.3%,显著增产19.8%。优化施肥、石灰和秸秆的配合施用均是消减冷浸田还原性物质含量的有效措施。

关键词: 调查分析, 调查分析

Abstract: A trial was conducted to clarify the effects of different measures on the concentration of reducing substances of soil and grain yield of rice in cold waterlogged paddy field. The purpose was to provide theoretical basis for selecting and utilizing suitable amelioration materials. Field trial was designed with 6 treatments, including the optimized fertilization and different measures (lime, organic matter and straw). The effects of each treatment on soil Eh, concentration of soil reducing substances, rice grain yield and nutrients uptakes were compared. The results showed that optimized fertilization decreased the total of soil reducing substances and improved the yield by 26.2% compared to that of the control. The grain yield of the treatments of lime and organic fertilizer had no significant difference compared with that of the treatment of optimized fertilization. Straw returning increased the Eh and decreased the concentration of soil reducing substances, improving the yield by 14.2%. The treatment of the combination of lime and straw not only increased soil Eh, but also decreased the concentration of soil active reducing substances and Fe2 + by 40.0% and 49.3% respectively, and improved the yield by 19.8% compared to that of the treatment of optimized fertilization. So, scientific fertilization, and the combined application of lime and straw were both effective measures to decrease the concentration of reducing substances in cold waterlogged paddy field.