蔬菜种子在播种前所进行的选种、浸种、搓种、洗种和催芽处理,是因为种皮阻碍种子吸水和带有病菌。例如韭菜籽油脂多,菠菜籽有硬壳。瓜籽皮硬,辣椒籽、葱籽含油脂和辣素,芹菜籽外表呈革质等。这些种子的共性是透水、透气性差,发芽慢,不仅需要侵种,还需要揉搓,洗掉沾附在种子上的粘膜和辣素,这样才能吸水发 Vegetable seeds in the sowing before the selection, soaking, rubbing, washing and germination treatment, because the seed coat hinder seed water and bacteria. For example, leek seed oil more, spinach seed hard shell. Melon seed hard, pepper seeds, onion seeds contain oil and spicy, celery seeds were leathery and so on. Common to these seeds is water permeability, poor air permeability, slow germination, not only need to invade, but also need to rub, wash off the mucous membranes and spicy on the seeds, so as to absorb water