夏河农牧交错区小黑麦与豆科牧草混播的生产性能研究

为筛选适合于夏河农牧交错区小黑麦(Secale cereale L.)与豆科牧草的混播组合及比例，以及在不同肥力条件下生产性能的差异，本试验研究了'甘农2号’小黑麦('Gannong No. 2’ Triticale variety)与3种豆科牧草('加拿大’饲用豌豆('Canadian’ forage peas)、'青海’箭筈豌豆('Qinghai’ common vetch)和'绿箭1号’箭筈豌豆('Lvjian No.1’ common vetch))不同比例(100∶0,80∶20,70∶30,60∶40,50∶50,40∶60,30∶70,20∶80,0∶100)混播时的生产性能。结果表明：土壤肥力对小黑麦和豆科牧草混播草地的草产量有显著影响；土壤贫瘠条件下，'甘农2号’小黑麦与'绿箭1号’箭筈豌豆以50∶50的比例混播时干草产量最高(13.97 t·hm^-2)；土壤肥力状况较好时，'甘农2号’小黑麦与'青海’箭筈豌豆以80∶20的比例混播时，干草产量最高(16.45 t·hm^-2)。该研究对于提高夏河农牧交错区禾-豆混播的生产性能具有重要意义。

Studies on the Forage Yield of the Mixture of triticale and Legume in the Farming-pastoral Ecotone of Xiahe

To screen the optimum mixture model of triticale and legumes and the differences in production performance under different fertility conditions in the farming-pastoral ecotone of Xiahe,this experiment was conducted to study the production performance of 'Gannong No. 2' triticale variety mixed with three kinds of legumes ('Canadian' forage peas,'Qinghai' common vetch and 'Lvjian No.1' common vetch) at different ratios (100:0,80:20,70:30,60:40,50:50,40:60,30:70,20:80,0:100),respectively. The results showed that the fertility of the soil greatly affected the forage yield;When the soil was poor in fertility,the highest hay yield could be obtained while 'Gannong No.2' triticale variety mixed with 'Lvjian No.1' common vetch variety at a ratio of 50:50 (13.97 t·hm^-2),and when the soil was rich,the highest hay yield could be obtained while 'Gannong No.2' triticale variety mixed with 'Qinghai' common vetch variety at a ratio of 80:20 (16.45 t·hm^-2).