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Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (8): 49-59.DOI: 10.11686/cyxb2020310

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

Qiang XU(), Xin-hui TIAN, Wen-hua DU()   

  1. College of Pratacultural Science,Key Laboratory of Grassland Ecosystem,Ministry of Education,Sino-U. S. Centers for Grazingland Ecosystem Sustainability,Gansu Agricultural University,Lanzhou 730070,China
  • Received:2020-06-30 Revised:2020-08-31 Online:2021-07-09 Published:2021-07-09
  • Contact: Wen-hua DU

Abstract:

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.

Key words: alpine pastoral area, rye, common vetch, mixed sowing, total hay yield, nutrient quality