干旱地区农业研究2018，Vol.36Issue(1)：83-88,101,7.DOI:10.7606/j.issn.1000-7601.2018.01.13
不同供水水平对玉米/豌豆间作系统作物耗水特征的影响
Characteristics of crop water consumption under maize/pea intercr opping systems with different irrigation levels
摘要
Abstract
A field experiment was conducted to investigate the effect of root splitting on water use characteristics in maize/pea intercropping system.The crop grain yield and water use efficiency(WUE)were also determined.Maize(Zea mays)and pea(Pisum satiyum)monoculture and their intercropping,with three irrigation strategies and three root sepa-ration methods as the main treatments were evaluated at oasis agriculture area in Wuwei city,Gansu Province from April to October,2011.Plastic film separation,nylon mesh separation and non -separation as three root separation methods in maize/pea intercropping treatment,while the amount of water irrigation with local traditional apply(high level),less than traditional irrigation by 10%(medium level)and less than traditional irrigation by 20%(low level)as three irriga-tion strategies was used at crop growing period.Results showed that maize/pea intercropping increased the land equiva-lent ratios(LER)and crop WUE by 13.01% ~42.13% and 3.07% ~43.38% compared with monoculture,respec-tively.Crop grain yield and aboveground biomass of different maize/pea intercropping treatments were increased by 12.90% ~ 30.45% compared to monoculture.Grain yield of root without separation treatments were 13.79% ~17.17% higher than the root separated with plastic film,and 1.12% ~3.52% higher than root separated by nylon treatment.The amount of water consumes was not significantly different between the medium irrigation treatment(10%lower than traditional irrigation)and local traditional irrigation,but it was significantly decreased than the lower irrigation (20% lower than traditional irrigation)treatment.In conclusion,compared to monoculture cropping,maize/pea inter-cropping system was beneficial to increase the LER and improve crop yield.Root splitting had no benefit on crop yield improvement and on LER increasing in intercropping system.关键词
玉米/豌豆间作/供水水平/隔根/土地当量比/水分利用率/收获指数Key words
maize/pea intercropping/irrigation levels/root splitting/land equivalent ratios/water use efficiency/harvest index分类
农业科技引用本文复制引用
牛伊宁,刘冬梅,罗珠珠,柴强..不同供水水平对玉米/豌豆间作系统作物耗水特征的影响[J].干旱地区农业研究,2018,36(1):83-88,101,7.基金项目
国家自然科学基金项目(31560379) （31560379）
甘肃省财政厅高校基本科研业务费项目(035-041049) （035-041049）
甘肃省自然科学基金(1506RJZA003,1606RJZA076) （1506RJZA003,1606RJZA076）
甘肃省高等学校科研项目(2015B-051) （2015B-051）
