ZENG Xian-nan,WANG Qi,SUN Yu,et al.Effect of N Fertilizer Application on Soil Organic Carbon and Carbon Pool Management Index Under Rice Staw Returning[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(05):41-44.[doi:10.11942/j.issn1002-2767.2016.05.0041]
水稻秸秆还田下氮肥对土壤有机碳及碳库管理指数的影响
- Title:
- Effect of N Fertilizer Application on Soil Organic Carbon and Carbon Pool Management Index Under Rice Staw Returning
- 文章编号:
- 1002-2767（2016）05-0041-04
- 分类号:
- S511.06
- 文献标志码:
- A
- 摘要:
- 为完善黑龙江省水稻秸秆还田下施肥技术体系，采用随机区组设计，分析了不同处理下土壤不同层次有机碳及碳库管理指数。结果表明：同一施氮量下，与无秸秆还田比较，秸秆还田有利于提高表层土壤活性有机碳及碳库管理指数。秸秆还田条件下，0~10 cm土层总有机碳、活性有机碳含量大于10~20 cm土层含量，且各土层总有机碳、活性碳含量和碳库管理指数随着氮肥施入量的增加出现先增加后降低的趋势。处理Ⅴ(水稻秸秆还田配施氮肥用量为133 kg?hm-2 )的总有机碳、活性有机碳和碳库管理指数最高。
- Abstract:
- In order to study the effect of N fertilizer application on soil organic carbon and carbon pool management index under rice staw returning,randomized block design with three replications was used,soil organic carbon and carbon pool management of different soil layers were analyzed under different treatments.The results indicated that compared with no-staw returning treatment,staw returning treatment could enhance the active organic carbon and carbon pool management index of soil surface layer under same N fertilizer application; the total organic carbon and active organic carbon contents of 0~10 cm soil layer were higher than those of 10~20 cm soil layer under staw returning,the total organic carbon ,active organic carbon contents and carbon pool management index of different soil layers increased at first,but gradually decreased later with N fertilizer application increasing.The total organic carbon ,active organic carbon contents and carbon pool management index were the highest under treatment V(rice staw returning with N 133 kg?hm-2 ).
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备注/Memo
收稿日期：2016-03-30