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| 秸秆还田和休耕对赣东北稻田土壤养分的影响 | |
| 引用本文： | 庞成庆,秦江涛,李辉信,刘金花.秸秆还田和休耕对赣东北稻田土壤养分的影响[J].土壤,2013,45(4):604-609. |
| 作者姓名： | 庞成庆 秦江涛 李辉信 刘金花 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京210095;中国科学院南京土壤研究所,南京210008 2. 中国科学院南京土壤研究所,南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 |
| 基金项目： | 国家公益性行业(农业)科研专项(201203030)资助 |
| 摘 要： | 通过田间试验研究了水稻秸秆还田和休耕对稻田土壤肥力的影响.结果表明,添加秸秆的处理S1R0和S1R1土壤有机碳含量分别有高于不添加秸秆的处理S0R0和S0R1的趋势,并在2011年早稻收获时达到显著水平.添加秸秆对全量养分的影响并不显著,但显著增加了土壤碱解氮和速效钾含量.2011年早稻收获时休耕处理土壤全氮和全磷含量显著高于连续种植水稻的处理.与2009年早稻收获时相比,201 1年早稻收获时S0R0和S1R0处理土壤速效磷含量分别提高了55.5％和29.3％,说明休耕显著提高了土壤速效磷含量.休耕处理土壤中速效钾含量一直维持在较高水平,而连续种植水稻的处理速效钾含量则逐年下降. |
| 关 键 词： | 秸秆还田 休耕 土壤肥力 稻田 |
Effects of Rice Straw Incorporation and Permanent Fallow on Soil Nutrient of Paddy Field in Northeastern Jiangxi Province |
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| PANG Cheng-qing,QIN Jiang-tao,LI Hui-xin,LIU Jin-hua.Effects of Rice Straw Incorporation and Permanent Fallow on Soil Nutrient of Paddy Field in Northeastern Jiangxi Province[J].Soils,2013,45(4):604-609. | |
| Authors: | PANG Cheng-qing QIN Jiang-tao LI Hui-xin LIU Jin-hua |
| Institution: | College of Resources and Environmental Science, Nanjing Agricultural University |
| Abstract: | This paper studied the effects of rice straw incorporation and permanent fallow on soil nutrient. The results showed that the content of soil organic carbon was significantly higher at the treatment of straw incorporation than that at the treatment of no straw applied during the harvesting time in 2011. Straw incorporation had no significant effect on total N, total P and total K while significantly increased the contents of alkali-hydrolyzable nitrogen and available potassium. Total N and total P were significant higher at the treatment of permanent fallow than those at the planting rice field in 2011. The increased proportions of soil rapidly available phosphorus in the treatments of S0R0 (55.5%) and S1R0 (29.3%) during the harvesting time of early rice in 2011 comparing to that in 2009 indicated that the permanent fallow significantly increased the content of soil rapidly available phosphorus. The soil available potassium kept the relatively higher state at the treatment of permanent fallow during the observed time, which decreased at the treatment of planting rice. |
| Keywords: | Straw incorporation Fallow Soil nutrient Paddy field |
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