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比制种父母本早始穗５～７ ｄ 的同一父母本播期称辅助播期。通过分析辅助播期和制种播期父母本的叶龄变化及辅助播期的花期预测结果，可以较早地预测制种亲本的花遇程度，从而在制种父母本进入幼穗分化前就可采取调控措施。此方法对花期预测及时、效果好，尤其适合于新组合制种及两系、三系秋季制种。
The sowing date is the same as the sowing date of the same parents who planted the ear 5 to 7 days earlier than the sowing date. By analyzing the change of leaf age of the parents and the flowering date of the assisted sowing date, it is possible to predict the degree of flower arrangement of the parents of the seed production earlier, Can take regulatory measures. This method of flowering forecast timely, good effect, especially suitable for the new combination of seed and two or three series of autumn seed.