Effects of Fertilizer Reduction Combined with Organic Fertilizer and Mixed Sowing Ratio on Forage Value of Avena sativa+Vicia sativa in Alpine Region
In this study,6 mixed ratios and 4 kinds of fertilization models were designed,and the main objective was to solve the problems existing in the traditional oat planting mode in the alpine region.The fresh forage yield,hay forage yield,plant height,crude protein(CP),ether extract(EE),crude ash,neutral detergent fiber(NDF),and acid washing fiber(ADF)of Avena sativa+Vicia sativa mixed grassland were determined,the grey correlation degree was used to evaluate the performance of mixed grassland.The results showed that the optimal ratio of Avena sativa+Vicia sativa was 6:4.Compared with oat monoculture,the crude protein and ether extract with the above ratio increased by 60％and 36.4％respectively,while the yield did not significantly decrease.When 50％fertilizer was subtituted by organic fertilizer,the yield of hay increased by 61.13％,and the crude protein increased by 23.9％.Bio-organic fertilizers could act as an alternative to chemical fertilizers.There was an interaction between fertilization and mixed sowing ratio.The comprehensive evaluation was the best under the conditions of 50％fertilizer reduction+50％organic fertilizer,mixed sowing ratio of Avena sativa and Vicia sativa at 6:4,which was suitable for planting and popularization in Xigaze region.
fertilizer reductionorganic fertilizerAvena sativaVicia sativaalpine region
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