排灌机械工程学报Issue(12)：1085-1090,6.DOI:10.3969/j.issn.1674-8530.15.0089
秸秆覆盖夏玉米田棵间蒸发变化规律
Soil evaporation for summer maize under no -tillage with straw mulching
摘要
Abstract
To improve the utilization efficiency of rainfall in North China,micro-lysimeters (MLS) were selected to measure soil evaporation(E)of summer maize with and without straw mulching and combined with soil moisture to estimate evapotranspiration(ET).The seasonal dynamics of E over the field and the ratio of E to ET were studied.The results show that soil evaporation of summer maize with straw mulching was reduced by an average of 39.5% compared with CK,and there was significant difference.The change trend of accumulative evaporation capacity and time is in line with the power function model,and the fitting correlation coefficient reached to 0.99.Straw mulched and no mulch treatment E/ET were about 33.5% and 41%.The correlation coefficients of evapotranspiration of straw mulched and no mulch treatments under the condition of evaporation and leaf area index were 0.70 and 0.85,respectively.The total rainfall in North China and the coverage of basic water con-sumption were about the same,but the control appeared stage water shortage.The study reflects the advantage of no-tillage with mulching agricultural water conservation technique,and offers a theoretical basis for water-saving agriculture.关键词
夏玉米/秸秆覆盖/棵间蒸发/土壤含水率/叶面积指数Key words
summer maize/straw mulching/soil evaporation/soil moisture/leaf area index分类
农业科技引用本文复制引用
赵秀金,张志涛,张照录,马艳飞,吴忠东..秸秆覆盖夏玉米田棵间蒸发变化规律[J].排灌机械工程学报,2015,(12):1085-1090,6.基金项目
国家自然科学基金资助项目（41271236，41402208）；山东省自然科学基金资助项目（ZR2012DL05）；山东省社会科学规划研究项目 （）
