干旱地区农业研究2018，Vol.36Issue(1)：179-185,7.DOI:10.7606/j.issn.1000-7601.2018.01.27
耕作方式与施肥对旱农区粮饲兼用玉米耗水特性和干物质积累的影响
Effects of tillage and nitrogen on water consumption and dry matter accumulation for arid region grain and forage maize
摘要
Abstract
Field experiments were conducted to study and compare the effects of four tillage methods combined with two nitrogen levels on water consumption characteristics and dry matter accumulation on maize.The treatments were:T1 (conventional tillage),T2(rotary tillage),T3(sub-soiling)and T4(no tillage)with two nitrogen levels(N2:200 kg· hm-2mineral nitrogen,N3:300 kg·hm-2mineral nitrogen,arranged in a randomized complete block design.The re-sults showed that compared with the nitrogen,tillage methods had a great effect on water consumption amounts and water reduction amounts.Sub-soiling treatment was beneficial to reduce water consumption from sowing to jointing stage and in-crease water consumption and water consumption percentage from jointing to grain filling stage.Sub-soiling compared with conventional tillage at 0~30 cm soil layer reduced water by 35.3% from sowing to jointing stages.Similarly,at 30~110 cm soil layer the amount of water reduced increased by 54.2% and 20.5% from jointing to flowering and flowering to grain filling stage.Maize dry matter accumulation at different development stages,biological yield and grain yield were highest under treatment of sub-soiling+300 kg·hm-2mineralnitrogen.Sub-soiling+300 kg·hm-2mineral nitrogen had no significant difference compared with sub-soiling+200 kg·hm-2mineral nitrogen.Water use efficiency(WUE)was highest in no tillage+200 kg·hm-2mineral nitrogen,however,there were no significant difference between no tillage+200 kg·hm-2mineral nitrogen and sub-soiling+300 kg·hm-2mineral nitrogen.Therefore,considering improved yield, water use efficiency and the use of fertilizer,sub-soiling+200 kg·hm-2mineral nitrogen under Complete Film Surface Plastic Mulching and Double Ridge -Furrow technology may be considered as suitable in the Western Loess Plateau.关键词
耕作方式/全膜双垄沟播/深松耕/耗水量/干物质积累量Key words
tillage method/Whole Field Surface Plastic Mulching and Double Ridge -Furrow planting/sub-soil-ing tillage/water consumption amounts/dry matter amounts分类
农业科技引用本文复制引用
张明君,李玲玲,谢军红,任金虎,Lamptey Shirley..耕作方式与施肥对旱农区粮饲兼用玉米耗水特性和干物质积累的影响[J].干旱地区农业研究,2018,36(1):179-185,7.基金项目
973计划项目(2012CB722902) （2012CB722902）
国家科技支撑计划项目(2015BAD22B04-3) （2015BAD22B04-3）
