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Hay quality is best from heading to flowering and from flowering to milk stage.
干草品质以抽穗至开花和开花至灌浆期为最好。
Check hay is good quality, it should have a fresh sweet smell, not dusty or mouldy.
检查干草的质量，它应该有新鲜的香味，而不是尘土飞扬或霉变。
Applying fertilizer can increase their hay yields and improve forage quality.
施肥可以提高产量和营养成分含量。
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