Response of Mixed Grassland of Triticale and Peas to Fertilizer Types in the Alpine Pastoral Areas of Gannan
In this study we explored the effects of fertilizer types on the productivity,nutritional quality,and economic benefits of mixed cropping of triticale(Triticosecale)with forage pea(Pisum sativa)and common vetch(Vicia sativa).A split-plot design with three replicates were used in the experiments.The main plots were the fertilizer types,including four levels,i.e.no fertilizer application,chemical fertilizer,organic fertil-izer,and bacterial fertilizer.The subplot was the mixed combinations,which included three levels,i.e.50% of triticale mixed with 50% of forage pea variety'Canadian'(M1),50% of triticale mixed with 50% of common vetch variety'Ximu333'(M2),50% of triticale mixed with 50% of common vetch variety'Lvjian No.1'(M3).The results showed that compared to chemical fertilizers,the application of organic fertilizers and microbial fertilizers decreased hay yield by 7.62% and 16.40%,respectively.However,the crude protein con-tent increased by 0.68% and 1.29%,and the relative feed value improved by 7.46% and 5.38%,respec-tively.In terms of the mixed combinations,the mixture 50% of triticale and 50% of common vetch variety'Ximu333'showed better results with higher net income,making it suitable for promotion and cultivation in the alpine pastoral areas of Gannan.Overall,compared to chemical fertilizers,the sole application of organic fertil-izers or microbial fertilizers significantly reduced the net income of the mixed cropping system.When the nitro-gen rates were similar,using organic fertilizers increased the fertilization cost by 6171 CNY·hm-2.Therefore,in forage production in Gannan Prefecture,organic fertilizers or microbial fertilizers should not replace chemical fertilizers completely.Instead,a strategy of partial substitution should be considered to ensure high yield of crops and increase the income of farmers and herders.
万方数据
维普
