高寒地区红豆草苜蓿不同栽培模式生产性能比较研究

Produce performance of mixture sowing and unicast sowing of alfalfa and sainfoin in alpine pasture area

在甘肃省甘南州合作市那吾乡高寒牧区,进行了甘肃红豆草和阿尔冈金紫花苜蓿单播和混播模式下的生产性能比较试验,结果表明:甘肃红豆草和阿尔冈金苜蓿混播是高寒牧区建立优质多年生豆科牧草人工草地的最佳技术模式,其次为单播红豆草,单播苜蓿产量最低。混播第2年干草产量达到12 136 kg/hm2,分别比单播红豆草和单播苜蓿提高14.5%和42.0%(P<0.01);单播红豆草比单播苜蓿多产干草1 362 kg/hm2,高出14.0%(P<0.01);混播第3年干草产量达到13 286 kg/hm2,比单播红豆草和单播苜蓿分别提高22.8%和71.0%(P<0.01);单播红豆草比单播苜蓿干草产量增加3 090kg/hm2,提高28.6%(P<0.01)。

Field experiment,from 2006 to 2008,was conducted to compare produce performance of sole sowing and mixture sowing of Medicago sativa L.Algonguin and Onobrychis viciaefolia Scop.cv＂Gansu＂at Hezuo.The results showed that mixture sowing of Medicago sativa L.Algonguin and Onobrychis Viciaefolia Scop.cv.＂Gansu＂ was the best model to establish perennial artificial legume grassland in alpine pasture area,followed by sole sowing of Onobrychis viciaefolia Scop.cv.＂Gansu＂.Dry yield of mixture sowing was 12 136 kg/hm^2,increasing 14.5% and 42.0% compare to sole sowing of Onobrychis viciaefolia Scop.cv.＂Gansu＂and Medicago sativa L.Algonguin in the second year,respectively.Dry yield of sole sowing of Onobrychis viciaefolia Scop.cv.＂Gansu＂ was higher than sole sowing Medicago sativa L.Algonguin.Dry yield of mixture sowing was up to 13 286 kg/hm^2,increasing 22.8% and 71.0% compare to sole sowing of Onobrychis Viciaefolia Scop.cv.＂Gansu＂and Medicago sativa L.Algonguin in the third year.