干旱地区农业研究2017，Vol.35Issue(5)：8-13,6.DOI:10.7606/j.issn.1000-7601.2017.05.02
种植模式对旱地玉米光合特性和产量的影响
Effects of planting patterns on photosynthetic pharacteristics and grain yield of maize in dryland
摘要
Abstract
In order to further optimize the high-yielding cultivation techniques of maize in semi-arid region of Central Gansu Province and improve the efficiency of limited water and soil resources,the field experiment was conducted for studying the effects of photosynthetic rate (Pn),transpiration rate (Tr),stomatal conductance (Gs),intercellular CO2 concentration (Ci) and grain yield of maize in maize-potato intercropping and monoculture under double ridges and furrow with plastic-film mulching,flat planting with plastic-film mulching and flat planting without mulching from 2014 to 2015.The results showed that:(1) The diurnal variation of Pn and Tr in the maize tasseling stage under different planting pattems showed a single peak and then descended,and the peak appeared at about 12:00 pm.The Pn and Tr of double ridges and furrow with plastic-film mulching was higher than that of the flat planting with plastic-film mulching and flat planting without mulching,also the Pn and Tr of intercropping was higher than that of monoculture.And Pn,Tr and Gs of maize were the highest under double ridges and furrow with plastic-fihn mulching in the maize-potato intercropped.(2)The LER of maize-potato intercropped was more than 1,and the grain yield of maize was 5 451.35 kg· hm-2 under double ridges and furrow with plastic-film mulching in the maize-potato intercropped,compared with intercropping under flat planting without mulching increased by 66.00％,especially in the years of low rainfall,the yield effect is more obvious.Therefore,the maize-potato intercroped planting patterns are feasible to further improve the yield of maize and the efficiency of water and soil in the rain-fed agricultural region of Central Gansu Province,and the maizepotato intercropped under double ridges and furrow with plastic-film mulching is a better planting pattern.关键词
玉米‖马铃薯/光合特性/作物产量/土地当量比(LER)Key words
maize-potato intercroped/photosynthetic characteristics/crop yield/LER分类
农业科技引用本文复制引用
任金虎,谢军红,李玲玲,Lamptey Shirley,Stephen Yeboah,张明君,高海强..种植模式对旱地玉米光合特性和产量的影响[J].干旱地区农业研究,2017,35(5):8-13,6.基金项目
国家重点基础研究发展计划(973计划)项目(2012CB722902) （973计划）
国家科技支撑计划项目(2015BAD22B04-03) （2015BAD22B04-03）
