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Abstract This study examined the effects of different mixed cropping ratios on forage yield, biomass accumulation, distribution, and nitrogen utilization in the Qinghai Lake region. Five mixed ratios of oat and common vetch were established: 1:0 (A.M.), 2:1 (A2V1), 1:1 (A1V1), 1:2 (A1V2), and 0:1 (V.M.), with A representing oats and V representing common vetch, under two nitrogen conditions. The study found that (1) Oats contributed the most to biomass and A1V1 had the highest production. (2) Treatments impact the nitrogen accumulation, A1V1 had higher nitrogen contents of leaves and stem. (3)A1V1 showed the highest nitrogen utilization efficiency. These findings can help improve agricultural practices in the area by promoting more efficient and sustainable farming methods.
Wang et al. (Thu,) studied this question.