作物学报2012，Vol.38Issue(8)：1504-1512,9.DOI:10.3724/SP.J.1006.2012.01504
免耕轮作对内蒙古地区农田贮水特性和作物产量的影响
Effects of No-Tillage with Rotation on Soil Water Retaining Properties and Crop Yield in Inner Mongolia
摘要
Abstract
In 2005-2011, the effects of five tillage methods including no-tillage with high stubble mulching (NHS), no-tillage with low stubble mulching (NLS), no-tillage with high stubble (NH), no-tillage with low stubble (NL), and conventional tillage (T) combined with three rotation patterns(oat-soybean-corn, soybean-corn-oat, corn-oat-soybean) on water retaining properties and crop yield were studied in Qingshuihe county of Inner Mongolia. The results showed that no-tillage combined with rotations increased the soil water retaining capacity, and there was a positive correlation between soil water storage and rainfall. Among different treatments, the two no-tillage with stubble mulching combined with oat-soybean-corn rotation had the biggest effect to increase the soil water storage that was 35.66-41.63% higher as compared with conventional tillage. All the no-tillage methods combined with rotation patterns were able to increase crop water use efficiency and crop yield that was positively correlated with rainfall. After the first rotation cycle, compared with conventional tillage, the soil water use efficiency of NHS, NLS, NH, and NL increased by 43.77%, 31.45%, 26.74%, and 13.91%, the crop yield increased by 29.68%, 27.69%, 18.05%, and 15.66%. In the second rotation cycle, the drought was serious, which resulted in the decreased effects of no-tillage combined with oat-soybean-corn rotation, but the crop water use efficiency of NHS, NLS, NH and NL increased by 29.83%, 20.51%, 6.18%, and 3.15%, the crop yield increased by 17.52%, 13.60%, 4.33%, and 1.95%, as compared with conventional tillage. So in the arid area of Inner Mongolia where the rainfall is the major source of soil water, no-tillage combined with rotation can improve the ability of storing moisture in soil, and increase crop yield, especially the no-tillage with stubble mulching combined with oat-soybean-corn rotation.关键词
免耕轮作/土壤贮水量/产量/作物水分利用效率/降雨量Key words
No-tillage with rotation/ Soil water storage/ Yield/ Crop water use efficiency/ Rainfall引用本文复制引用
郭晓霞,刘景辉,田露,张星杰,李立军,张向前..免耕轮作对内蒙古地区农田贮水特性和作物产量的影响[J].作物学报,2012,38(8):1504-1512,9.基金项目
本研究由CGIAR水和粮食挑战计划——黄河流域旱作保护性耕作项目(CPWFYRB200503),内蒙古农业大学科技创新团队建设项目(NDTD2010-8)和中国农业大学与内蒙古农业大学两校合作基金项目资助. （CPWFYRB200503）
