水土保持学报2017，Vol.31Issue(3)：162-168,7.DOI:10.13870/j.cnki.stbcxb.2017.03.028
垄膜沟秸秆种植方式对夏玉米水热效应的影响
Effects of Plastic Film Combined with Straw Mulching on Soil Hydrothermal Regime of Summer Maize
摘要
Abstract
In view of the fact that shortage and uneven temporal and spatial distribution of rainfall in the semiarid area of the Loess Plateau,this paper aimed to study the hydrothermal regime of the ridge-furrow planting mode,and reveal the mechanism of hydrothermal regulation and the enhancement of crop yield.Field experiments of open field treatment (CK) and plastic film combined with straw mulching treatment (RMFS)were conducted in 2014 and 2015 in Yangling,Shaanxi.The results showed that the plastic film combined with straw mulching cultivation had effects on the growth of summer maize,and the mulching could improve soil moisture condition.Soil temperature showed a phenomenon of ‘lowering the temperature when the temperature was high,and vice versa’.The RMFS treatment shortened the duration of crop growth and adjusted soil water consumption to improve the balance between water supply and demand.Soil water use efficiency and thermal time use efficiency was increased by 39.85％ and 43.34％ in the RMFS treatment within two years,respectively.Although water consumption could not be saved and soil thermal time was not increased,soil water use efficiency and thermal time use efficiency were significantly improved.In short,ridge covered plastic mulching with furrow covered with straw mulching treatment improved crop yield by improving the hydrothermal interaction regime.Plastic film combined with straw mulching treatment is a suitable effective practice to collect rainwater harvesting.关键词
水热效应/垄覆膜沟覆秸秆/夏玉米/水分利用效率/积温利用效率Key words
soil hydrothermal regime/plastic film combined with straw mulching/summer maize/water use efficiency/thermal time use efficiency分类
农业科技引用本文复制引用
陈光杰,冯浩,吴淑芳,郭慧莉,张彬彬,胡亚瑾..垄膜沟秸秆种植方式对夏玉米水热效应的影响[J].水土保持学报,2017,31(3):162-168,7.基金项目
国家高技术研究发展计划(863计划,2013AA102904) （863计划,2013AA102904）
