应用生态学报2011，Vol.22Issue(5)：1183-1188,6.
保护性耕作和杂草管理对冬小麦农田土壤水分及有机碳的影响
Effects of conservation tillage and weed control on soil water and organic carbon contents in winter wheat field
摘要
Abstract
Taking a long term ( since 2004) straw-returning winter wheat field as the object, an investigation was made in the wheat growth seasons of 2008-2009 and 2009-2010 to study the effects of different tillage methods ( rotary tillage, harrow tillage, no-tillage, subsoil tillage, and conven tional tillage) and weed management on the soil water and organic carbon contents. No matter retaining or removing weeds, the weed density under subsoil tillage and no-tillage was much higher than that under rotary tillage, harrow tillage, and conventional tillage. From the jointing to the milking stage of winter wheat, retaining definite amounts of weeds, no matter which tillage method was adopted, could significantly increase the 0-20 cm soil water content, suggesting the soil water conservation effect of retaining weeds. Retaining weeds only increased the soil organic carbon content in 0-20 cm layer at jointing stage. At heading and milking stages, the soil organic carbon contents in 0-20, 20-40, and 40-60 cm layers were lower under weed retaining than under weed removal.Under the conditions of weed removal, the grain yield under subsoil tillage increased significantly,compared with that under the other four tillage methods. Under the conditions of weed retaining, the grain yield was the highest under rotary tillage, and the lowest under conventional tillage.关键词
保护性耕作/杂草/冬小麦/有机碳/土壤水分分类
农业科技引用本文复制引用
韩惠芳,宁堂原,李增嘉,田慎重,王瑜,仲惟磊,田欣欣..保护性耕作和杂草管理对冬小麦农田土壤水分及有机碳的影响[J].应用生态学报,2011,22(5):1183-1188,6.基金项目
"十一五"国家科技支撑计划项目(2006BAD15B07,2007BAD89B09-9)、公益性行业(农业)科研专项(200803028,201103001)、山东省自然科学基金项目(ZR2010CQ009)和山东省优秀中青年科学家科研奖励基金项目(BS2009NY008)资助. （2006BAD15B07,2007BAD89B09-9）
