摘要
在不灌水和灌水60mm条件下将青贮玉米与豌豆以6种带型种植,研究了玉米、豌豆行间土壤水分变化、各群体鲜草产量及干物质水分利用效率。结果表明,豌豆生长旺盛期需水量大,在共生期对水分竞争强烈,影响了玉米的生长;玉米豌豆3:3间作具有明显的间作产量优势和较高的群体水分利用效率;不灌水和灌水60mm处理的土地当量比(LER)分别为1.29和1.33,群体水分利用效率不灌水和灌水60mm处理比玉米单作分别提高了24.86%和19.24%,比豌豆单作分别提高了14.58%和37.25%。播前灌水60mm可使玉米间作行间土壤水分状况得到改善,豌豆产量较不灌水处理增长显著。
Soil moisture, fresh grass biomass and water use efficiency of silage maize and pea intercropping were studied under conditions of non-irrigating and irrigating 60 mm. The results showed that 3：3 intercropping had strong advantages in yield and high water use efficiency （WUE）. Land equivalent ratio （LER） were 1.29 and 1.33 of non-irrigating and irrigating 60 mm respectively, WUE of intercropping increased 24.86 % and 19.24 % compared with maize monoculture, and increased 14.58 % and 37.25 % compared with pea monoculture. The soil moisture of inter maize row improved and pea yield increased greatly by irrigating 60 mm before planting.
出处
《甘肃农业大学学报》
CAS
CSCD
2005年第4期492-497,共6页
Journal of Gansu Agricultural University
基金
西部开发科技行动项目"黄土高原半干旱区(定西)高效生态农业研究与示范"(2001BA901A18)。
