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牧草种子,尤其是多年生牧草的种子极其微小,无论播种、抓苗都较困难,而且播种当年几乎无收益,第二年也收益甚少,到第三年才能利用。加之多数牧草的种子结实率低,满足不了大面积牧草播种的需要,给人工草场的迅速建立造成一定的困难。但是,许多牧草具有发达的地下根茎,根茎上有节,节上和顶端有芽,芽出土便成为地上茎。牧草的
Seeds of grasses, especially perennial grasses, are so tiny that they are harder to sow and graze, and have little to no payoff in the year they were planted. They also benefit little in the second year and are not available until the third year. Combined with the low seed setting rate of most forages, the need for planting large areas of pasture can not be met, resulting in some difficulties in the rapid establishment of artificial pastures. However, many forages have well-developed underground rhizomes, there are nodes on the rhizomes, buds on the tops and at the tops, and shoots unearthed to become aboveground stems. Forage