1、种子春化处理采用大母根繁殖亲本,春化处理繁制杂种一代是保证纯度,提高产量,缩短制种时间的有效措施。低温处理种子的主要方法是: 播种前15天将双亲种子分别置在25摄氏度环境下,用30——40摄氏度温水浸种2——3小时,然后催芽。当50％芽露白时停止催芽。将催好芽的种子用沙布或毛巾包好放在0——2摄氏度的低温环 1, the seed vernalization treatment using the parent propagation of parents, vernalization of hybrid breeding generation is to ensure purity, increase yield, shorten the seed production time effective measures. The main method of low temperature treatment of seeds is: 15 days before sowing the parents were placed in 25 degrees Celsius environment, with 30 - 40 degrees Celsius warm soaking 2--3 hours, and then germination. Sprouting stops when 50% of buds are white. Will urge the seeds of buds wrapped with sand cloth or towel on the low temperature ring 0-2 degrees Celsius