草木樨种籽休眠性强,当年收获后,硬粒约占40—60%。如果保藏在良好条件下5～6年,发芽率仍达80%以上,硬粒可以降低20—30%。所谓硬粒即种皮坚硬,有一层网状形木栓层,如同硬腊质,直接播种不易吸水膨胀,往往造成不发芽或很少发芽,造成缺苗断垄。因此,为保全苗,播种前必须进行种籽处理。其方法:1.碾子窜种:象碾米一样,晒 Hibiscus seed dormancy, then harvest, durum about 40-60%. If preserved in good conditions for 5 to 6 years, the germination rate is still above 80%, can reduce 20-30% of the hard particles. The so-called hard seed coat that is hard, with a layer of network-shaped cork layer, as hard wax, direct sowing is not easy to absorb water swelling, often resulting in no germination or seldom germination, resulting in lack of broken seedlings ridge. Therefore, seedlings must be seeded prior to sowing in order to preserve them. The method: 1. Roller channeling species: like rice, sun