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硬实现象,在植物界里相当普遍.在牧草、饲料作物种子中也常见.其中豆料牧草中较多.硬实种子外面包着一层非常坚韧致密的种皮,这层种皮不透水或透性很差,将种子浸在水里或播在潮湿的土壤中不萌发.不同牧草种子硬实度各不同.有的硬实率高而影响其种用价值,对生产上造成直接影响。但是硬实的形成对植物界种的绵延是非常有利的,有些硬实种子在很长时间内保持自己的生活力,对品种资源的保存是很有价值的。
Hard to achieve like, in the plant kingdom is quite common in the forage, feed crop seeds are also common, including more fodder grass. Hard seeds covered with a layer of very tough and dense seed coat, the seed coat impervious or transparent Poor sex, the seeds soaked in water or sowing in the moist soil does not germinate .Forage of different grass hard degrees are different.Some hard real rate and affect their value, the production has a direct impact. However, the formation of hardcore plant species is very beneficial to the extension of the plant, some hardcore seeds in a very long time to maintain their viability, conservation of species resources is very valuable.