1.选种:应根据品种特征,按种子大小、色泽、形状、饱满程度等挑选,剔除畸形、破碎及色泽、形状不符的杂种。对商品种子或陈种子,除严格选种外,还应进行发芽率的测定。发芽率在85%以上,则质量较好,发芽率在70%以下,应增加播种量或换种。 2.浸种:一般浸种用冷水浸12～24小时,每隔5～6小时搅动1次。据试验,用12～25℃清水浸种,芽粗壮,发芽势强,但发芽速度慢,且无消毒作用。温汤浸种可加快发芽速度。方法是:用55℃温水(两开一凉)将种子浸泡30分钟左右,然 1. Selection: Should be based on variety characteristics, according to seed size, color, shape, full degree of selection, excluding deformity, broken and color, shape mismatched hybrids. On the commodity seeds or seeds, in addition to strict selection of seeds, but also the determination of germination rate. Germination rate of 85% or more, then the quality is better, the germination rate of 70% or less, should increase seeding or change. 2. soaking: general soaking with cold water soak 12 to 24 hours, every 5 to 6 hours stirring 1 times. According to the test, with 12 ~ 25 ℃ water immersion, bud thick, strong germination potential, but the germination speed is slow, and no disinfection. Wen Tang soaking can speed up the germination speed. Method is: 55 ℃ warm water (two open a cool) soak the seeds for about 30 minutes, however