高飞,贾志宽,张鹏,王维,路文涛,杨宝平,李永平.秸秆覆盖对宁南旱作农田活性有机质及碳库管理指数的影响[J].干旱地区农业研究,2011,29(3):107~111
秸秆覆盖对宁南旱作农田活性有机质及碳库管理指数的影响
Effect of straw mulching on soil active organic carbon and soil C pool management index in the arid areas of Southern Ningxia
  
DOI：10.7606/j.issn.1000-7601.2011.03.20
中文关键词:  秸秆覆盖量  总有机碳  活性有机质  碳库管理指数  宁南旱作农田
英文关键词:straw mulching quantity  dry farmland of Southern Ningxia  total organic carbon  active soil organic carbon  carbon pool management index
基金项目:“十一五”国家科技支撑计划旱农课题(2006BAD29B03)；节水共性技术研究(2007BAD88B10)
作者单位
高飞 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
贾志宽 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
张鹏 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
王维 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
路文涛 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
杨宝平 Research Institute of Water-sawing Agriculture in China s Arid Areas, Northuvest A & F University, Yangling, Shaanxci 712100，China
Key Laboratory of Crop Production and Ecology，Minisry of Agriculture, Nortuvest A&F University, Yangling， Shaanxi 712100，China 
李永平 Guyuan Institute of Agricultural Sciences, Guyuan, Ningxia 756000，China 
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中文摘要:
      在宁南半干旱区旱作农田连续进行了4 a不同秸秆覆盖量的冬小麦栽培试验,对不同秸秆覆盖量下的土壤碳库活度(A)、碳库活度指数(AI)、碳库指数(CPI)和土壤碳库管理指数(CMPI)进行了分析。结果表明:与不覆盖(CK)相比,0.9~0.6万kg/hm2覆盖量下0~20 cm土层土壤总有机碳含量显著提高1.46~1.01 g/kg(P<0.05),0.6~0.3万kg/hm2覆盖量下0~20 cm土层土壤活性有机碳提高0.60~0.43 g/kg,差异显著(P<0.05);各覆盖处理均有助于提高0~20 cm和20~40 cm土层土壤活性有机碳比重,尤以0.6~0.3万kg/hm2处理的效果最为明显,且碳库指数和土壤碳库管理指数表现最高。分析结果说明,0.6万kg/hm2左右秸秆(玉米)覆盖量能更有效地改善土壤碳状况。
英文摘要:
      A winter wheat cultivation experiment of a 4-year straw mulching of different quantities was conducted in the semiarid area of Southern Ningxia. The activity of carbon pool (A)，the activity index of carbon pool (AI)， carbon pool index (CPI) and carbon pool management index (CMPI) under different treatments were analyzed. The results showed that，compared with CK (no cover), the content of total organic carbon (TOC) in 0~20 cm soil layer under the treatments of 9 000~6 000 kg/hm2 increased by 1.46~ 1.01 g/kg significantly(P<0.05)，and the treatments of 6 000~3 000 kg/hm2 could increase active soil organic cabon (ASOC) in 0~20 cm soil layer by 0.60~0.43 g/kg with a significant difference(P<0.05); all the treatments helped to increase the percentage of ASOC in TOC both in 0~20 cm and 20~ ~40 cm soil layers, especially the treatments of 6 000~ -3 000 kg/hm2，under which the soil carbon pool in-dex and carbon pool management index were both the highest . The results also showed that the straw mulching (maize) quantity of approximate 6 000 kg/hm2 was more conducive to improve the status of soil carbon.
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