Effects of different ridge-furrow mulching systems on yield and water use efficiency of summer maize in the Loess Plateau of China  

作　　者：CHEN Pengpeng GU Xiaobo LI Yuannong QIAO Linran LI Yupeng FANG Heng YIN Minhua ZHOU Changming 

机构地区：[1]Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education,Northwest A&F University,Yangling 712100,China [2]College of Art and Science,Georgia State University,Atlanta 30341,USA [3]College of Water Conservancy and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070,China [4]College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China

出　　处：《Journal of Arid Land》2021年第9期947-961,共15页干旱区科学（英文版）

基　　金：This study was funded by the National Natural Science Foundation of China(51979235,51909221);the Agricultural Science and Technology Innovation Integration Promotion Project of Shaanxi Province,China(SXNYLSYF2019-01);the China Postdoctoral Science Foundation(2019M650277);the Natural Science Basic Research Plan in Shaanxi Province,China(2020JQ-276).

摘　　要：Ridge-furrow film mulching has been proven to be an effective water-saving and yield-improving planting pattern in arid and semi-arid regions.Drought is the main factor limiting the local agricultural production in the Loess Plateau of China.In this study,we tried to select a suitable ridge-furrow mulching system to improve this situation.A two-year field experiment of summer maize(Zea mays L.)during the growing seasons of 2017 and 2018 was conducted to systematically analyze the effects of flat planting with no film mulching(CK),ridge-furrow with ridges mulching and furrows bare(RFM),and double ridges and furrows full mulching(DRFFM)on soil temperature,soil water storage(SWS),root growth,aboveground dry matter,water use efficiency(WUE),and grain yield.Both RFM and DRFFM significantly increased soil temperature in ridges,while soil temperature in furrows for RFM and DRFFM was similar to that for CK.The largest SWS was observed in DRFFM,followed by RFM and CK,with significant differences among them.SWS was lower in ridges than in furrows for RFM.DRFFM treatment kept soil water in ridges,resulting in higher SWS in ridges than in furrows after a period of no water input.Across the two growing seasons,compared with CK,RFM increased root mass by 10.2%and 19.3%at the jointing and filling stages,respectively,and DRFFM increased root mass by 7.9%at the jointing stage but decreased root mass by 6.0%at the filling stage.Over the two growing seasons,root length at the jointing and filling stages was respectively increased by 75.4%and 58.7%in DRFFM,and 20.6%and 30.2%in RFM.Relative to the jointing stage,the increased proportions of root mass and length at the filling stage were respectively 42.8%and 94.9%in DRFFM,63.2%and 115.1%in CK,and 76.7%and 132.1%in RFM,over the two growing seasons,showing that DRFFM slowed down root growth while RFM promoted root growth at the later growth stages.DRFFM treatment increased root mass and root length in ridges and decreased them in 0-30 cm soil layer,while RFM increased them in 0-30 cm s

关 键 词：ridge-furrow mulching summer maize soil water storage soil temperature root mass root length 

分 类 号：S513[农业科学—作物学]