| 小麦秸秆全量还田对水稻生长及稻田氧化还原物质的影响 |
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| 引用本文： | 金鑫,蔡林运,李刚华,侯朋福,王绍华.小麦秸秆全量还田对水稻生长及稻田氧化还原物质的影响[J].中国土壤与肥料,2013(5):80-85. |
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| 作者姓名： | 金鑫 蔡林运 李刚华 侯朋福 王绍华 |
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| 作者单位： | 南京农业大学农学院/农业部南方作物生理生态重点开放实验室 |
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| 基金项目： | 国家科技支撑项目(2011BAD16B03、2012BAD04B08、2013BAD07B09);江苏科技支撑项目(BE2012304) |
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| 摘 要： | 以粳型水稻品系2645为材料,设小麦秸秆全量还田和不还田两个处理,研究小麦秸秆全量还田对水稻生长和稻田氧化还原物质的影响。结果表明,小麦秸秆全量还田提高了水稻穗粒数和产量,分别提高6.3%~6.9%和2.4%~10.0%,但使有效分蘖期(移栽后25 d)稻田水体含氧量降低了19.2%~68.4%,土壤还原物质总量和活性还原物质含量分别提高了6.2%~14.2%和15.1%~86.5%,水溶性Fe2+含量提高9.7%~30.1%,土壤氧化还原电位(Eh)和水稻根系活力分别下降3.6%~22.4%和13.5%~21.1%,拔节期分蘖数量和叶面积指数(LAI)分别减少9.5%和1.8%~4.3%。表明小麦秸秆全量还田增加了水稻生长前期稻田水体氧消耗量,促进了土壤还原物质积累,降低了土壤Eh和水稻根系活力,对水稻前期的群体发展有一定影响,但不影响最终产量。
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| 关 键 词： | 水稻 秸秆全量还田 土壤 氧化还原物质 |
| 收稿时间： | 2013/1/11 0:00:00 |
| 修稿时间： | 2013/4/9 0:00:00 |
Effects of all wheat crop straw application on rice growth and redox substance in rice fields |
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| JIN Xin;CAI Lin-yun;LI Gang-hua;HOU Peng-fu;WANG Shao-hua.Effects of all wheat crop straw application on rice growth and redox substance in rice fields[J].Soil and Fertilizer Sciences in China,2013(5):80-85. |
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| Authors: | JIN Xin;CAI Lin-yun;LI Gang-hua;HOU Peng-fu;WANG Shao-hua |
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| Institution: | JIN Xin;CAI Lin-yun;LI Gang-hua;HOU Peng-fu;WANG Shao-hua;Agronomy College,Nanjing Agricultural University/Key Laboratory of Crop Physiology & Ecology in Southern China,Ministry of Agriculture; |
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| Abstract: | A japonica rice cultivar 2645 was used and 2 treatments,including the application of all the wheat crop straw harvested and non wheat crop straw harvested were designed to study the effects of all wheat crop straw application on rice growth and redox substance in rice fields.The results showed that all wheat crop straw application increased spikelets per panicle and grain yield by 6.3%~6.9% and 2.4%~10.0% respectively,while decreased the content of oxygen in paddy water by 19.2%~68.4% at the effective tillering stage,the content of soil reducing substances and soil active reducing substance were increased by 6.2%~14.2% and 15.1%~86.5% respectively,the content of Fe2+ was increased by 9.7%~30.1%,the root activity of rice and Eh of soil were decreased by 3.6%~22.4% and 13.5%~21.1%,the tillers and LAI were decreased by 9.5% and 1.8%~4.3% respectively.It showed that all wheat crop straw application could increase paddy water oxygen consumptions at the early stage of rice growth,promote the accumulation of soil reducing substances,reduce the root activity of rice and Eh of soil,had certain effect on the rice group development at the early stage,but had no effect on rice grain yield. |
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| Keywords: | rice all wheat crop straw application soil redox substance |
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