高寒牧区黑麦和箭筈豌豆混播对草产量和营养品质的影响研究

为筛选适宜甘肃高寒牧区的箭筈豌豆与黑麦混播组合及比例，采用裂区设计，研究了3个箭筈豌豆品种（绿箭1号、绿箭2号和绿箭431）与黑麦新品系C33在不同混播比例（0∶100、20∶80、30∶70、40∶60、50∶50、60∶40、70∶30、80∶20、100∶0）下的生产性能及营养品质。结果表明，从混播组合看，A?（C33×绿箭1号）的平均干草产量（7.16 t·hm^-2）和综合评价值（0.860）较高；从混播比例看，B?（60∶40）的平均干草产量（8.01 t·hm^-2）和综合评价值（0.691）最高；混播组合和混播比例间的交互作用表明，A?以B?比例混播时干草产量（9.03 t·hm^-2）和综合评价值（0.711）最高。

Effects of mixed sowing of rye and common vetch on forage yield and nutrient quality in alpine pastoral areas

This research investigated the optimum mixed seeding planting ratio of common vetch and rye in an alpine pastoral area of Gansu. In this study the yields and nutritional quality of three varieties of common vetch （Green Arrow No. 1， Green Arrow No. 2 and Green Arrow No. 431） sown with rye strain C33 at different mixed ratios （0∶100， 20∶80， 30∶70， 40∶60， 50∶50， 60∶40， 70∶30， 80∶20， 100∶0） were evaluated. Results showed that the average total hay yield （7.16 t·ha^-1） and multivariate performance score （0.860） of C33×Green Arrow No. 1 were highest among the tested treatments. For the planting ratio of 60∶40， the average total hay yield （8.01 t·ha^-1） and the comprehensive evaluation value （0.691） were the highest. For the interaction between the species combination and the mixture rate， the best performing treatment was C33×Green Arrow No. 1 planted at a ratio 60∶40， with a total hay yield of 9.03 t·ha^-1 and a multivariate performance score of 0.711.