农业工程学报2012，Vol.28Issue(14)：91-98,8.DOI:10.3969/j.issn.1002-6819.2012.14.015
不同耕作措施对土壤水分和青贮夏玉米水分生产率的影响
Effects of different tillage methods on soil water content and water productivity of silage summer maize
摘要
Abstract
Appropriate tillage and mulching practices can reduce soil evaporation and crop evapotranspiration, hence save irrigation water. Three widely used tillage methods, tillage (T treatment), stubble mulching without tillage (C treatment) and stubble burning without tillage (B treatment) were chosen to analysis the effect of these methods on soil water, soil evaporation, crops' growth, silage maize yield and water productivity. The results showed that with less rainfall amount in the 2010 season, soil water content in 0-20 cm in Treatment C was higher than those in T and B treatments. The amount of soil water stored in 0-120 soil layer in C treatment was higher than those in T and B treatments in both seasons. Soil evaporation in C treatment was the least as compared to the other two treatments. Silage maize yields under C treatment were higher by 11 % and 9%, and water productivity was higher by 11.7% and 14.8% as compared to T and B treatments, respectively. In a conclusion, stubble mulching without tillage was a appropriate practice for reducing soil evaporation and increasing water productivity, and then was recommended as a optimal tillage practice for maize cultivation in Beijing area.关键词
水分/土壤/蒸发/翻耕/免耕/青贮夏玉米/土壤含水率/水分生产率Key words
water content/ soils/ evaporation/ tillage/ stubble without tillage/ silage maize yield/ soil moisture/ water productivity分类
农业科技引用本文复制引用
李艳,刘海军,黄冠华..不同耕作措施对土壤水分和青贮夏玉米水分生产率的影响[J].农业工程学报,2012,28(14):91-98,8.基金项目
中国水利水电科学研究院流域水循环模拟与调控国家重点实验室开放研究基金(IWHR-SKL-201105):国家自然科学基金(51179005) （IWHR-SKL-201105）
