| 引用本文： |
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王红妮，王学春，陶诗顺，李 军.秸秆残茬对低温潜沼性稻田土壤还原性物质含量及稻谷产量的影响[J].大英文模板1,2014,(3):179-183. [点击复制]
- WANG Hong-ni, WANG Xue-chun, TAO Shi-shun, LI Jun.Effect of straw returning on soil reducing substance and rice grain yield in gleyed paddy field[J].大英文模板1,2014,(3):179-183. [点击复制]
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| 摘要: |
| 采用盆栽实验的方法，研究了秸秆残茬对低温潜沼性稻田土壤氧化还原电位、土壤还原性物质总量、土壤Fe2+含量及其稻谷产量的影响。研究结果表明：(1) 在低温潜沼性稻田中，与无秸秆残茬田(T0)相比，随着秸秆残茬量的增加（2.5～10.0 t·hm-2），T1,T2和T3处理的土壤还原性物质总量增加2.2～4.8 cmol·kg-1；土壤Fe2+含量增加10.8～40.8 mg·kg-1，土壤氧化还原电位降低23.2～96.5 mV。其中，当秸秆残茬量超过5.0 t·hm-2时，秧苗移栽-返青期土壤Fe2+含量增加88.2 mg·kg-1，土壤氧化还原电位降低196 mv，不利于水稻生长。(2) 在低温潜沼性稻田中，与无秸秆残茬田(T0)相比，随着秸秆残茬量的增加（2.5～10.0 t·hm-2），T1,T2和T3处理的稻谷产量降低1 140～1 560 kg·hm-2；当秸秆残茬量高于5.0 t·hm-2时，稻谷千粒重降低0.2 g，结实率等显著降低4.2%。 |
| 关键词: 秸秆残茬 稻田 低温潜沼 还原性物质量 产量 |
| DOI： |
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| 基金项目:西南科技大学校博士基金项目（11zx7140）；四川省教育厅项目（13ZB0299）；国家“十二五”科技支撑计划重大项目（2011BAD16B05） |
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| Effect of straw returning on soil reducing substance and rice grain yield in gleyed paddy field |
| WANG Hong-ni1, WANG Xue-chun2, TAO Shi-shun2, LI Jun3 |
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| Abstract: |
| The field experiment was carried out at Mianyang, Sichuan province. Redox potential, total reducing substance and Fe2+ content were measured for the soil treated with four levels of straw, with the aim of exploring the relation between soil properties and rice grain yield. Results are shown as follows. As compared with T0 treatment (control), total reduction of soil was increased by 2.2～4.8 cmol·kg-1, Fe2+ content by 10.8～40.8 mg·kg-1, while redox potential decreased by 23.2～96.5 mV, as the amount of straw increased from 2.5 to 10.0 t·hm-2. Rice grain yield was reduced by 1 140～1 560 kg·hm-2. Grain weight decreased by 0.2 g, filled grain rate by 4.2%, when more than 5.0 t·hm-2 was incorporated into the paddy soil. |
| Key words: straw residue rice field gleyed paddy soil reducing substance rice yield |
