1. Spike difference. Before heading, the difference between highland barley and wheat is not big and it is not suitable to distinguish them. Once they are heading, the difference will be big. First of all, the awn of highland barley is very long, similar to the length of wheat ears, while the awn of wheat is relatively short. Look at heading, wheat only has one spike per node, and each spike has 2-3 flowers, but highland barley will bifurcate, and each node will produce 2-3 spikelets, and each spikelet usually has only one flower
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