Effect of straw incorporation on the temporal variations of water characteristics, water - use efficiency and maize biomass production in semi-arid China

文献类型： 外文期刊

第一作者： Wang, Xiaojuan

作者： Wang, Xiaojuan;Jia, Zhikuan;Wang, Xiaojuan;Liang, Lianyou

作者机构：

关键词： Biomass water - use efficiency;Biomass yield;Straw incorporation;Water characteristics

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：5.374； 五年影响因子：6.368 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Field experiments were conducted in 2008-2010 in the Loess Plateau of China to study the effects of straw incorporation on maize growth and biomass water use efficiency (WUE) under semi-arid condition in dark loessial soil. Low (LS 4.5 t ha(-1)), medium (MS 9.0 t ha(-1)), and high (HS 13.5 t ha(-1)) levels of straw were incorporated into the surface soil combined with fixed levels of inorganic fertilizers (CK) as control. Straw incorporation compared with CK significantly improved biomass yield at the tasseling maturity stage of maize and WUE at the jointing ten leaf collar and the tasseling grain filling stages. WUEs with LS and MS treatments were significantly lower than that with CK at the ten leaf collar tasseling stage, although the VVUEs with MS and HS treatments were significantly higher in the whole growth period. HS treatment compared with LS treatment significantly increased biomass yield at the ten leaf collar maturity stage and VVUE at the jointing tasseling stage. Meanwhile, MS and HS treatments compared with LS treatment significantly increased the biomass yield at the late grow period. Straw incorporation significantly improved WUE at the sowing jointing stage and soil organic carbon relative to CK. Biomass yield at the ten leaf collar stage and VVUE in whole growth period with LS treatment were significantly higher compared with Cl(WUE at the ten leaf collar tasseling and the grain filling maturity stages were significantly higher with HS treatment compared with CK. In the long term, the rational straw incorporation level in improving maize biomass yield and VVUE was 9.0 t ha(-1). (C) 2015 Elsevier B.V. All rights reserved.

分类号： S1

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