生态环境学报Issue(3)：406-410,5.
不同耕作方式对玉米田土壤有机碳含量的影响
Effects of different tillage methods on soil organic carbon content in a summer maize field
摘要
Abstract
As an essential indicator of soil quality, soil organic carbon (SOC) and its carbon pool management index (CPMI) had an important role in determining the reasonableness of tillage method. The field experiment was conducted to study the change of different tillage methods (abandoned, conventional, no-tillage, rotary) in SOC, active organic carbon (LOC) and CPMI in four growing stages (seedling, jointing, filling, maturing) under a summer maize cropping system in North China. The results showed that there were obvious changes in the SOC and LOC in 0-20 cm soil layer during the experiment period of summer maize, treatment with no-tillage had higher SOC content and LOC content than conventional and rotary tillage. No-tillage, rotary and conventional tillage increased CPMI in comparison with abandoned by 47.38%, 30.43%, 27.00% respectively in soil at maturing stage. The content of LOC in soil was significantly positively correlated with the content of SOC and CPMI. The corn grain yield was significantly positively correlated with the content of SOC, no significantly correlated with the content of LOC and CPMI. In conclusion, no-tillage method can both increase SOC content and improve CPMI, favoring soil quality amelioration and soil fertility improvement.关键词
耕作方式/土壤有机碳/活性有机碳/碳库管理指数Key words
tillage methods/soil organic carbon/labile organic carbon/carbon pool management index分类
资源环境引用本文复制引用
刘红梅,姬艳艳,张贵龙,李刚,杨殿林..不同耕作方式对玉米田土壤有机碳含量的影响[J].生态环境学报,2013,(3):406-410,5.基金项目
中央级公益性科研院所基本科研业务费专项(农业部环境保护科研监测所2012-szjj-lhm) （农业部环境保护科研监测所2012-szjj-lhm）
