在玉米杂交制种过程中,要根据父本、母本的生育期调整播种期,在正常年份,一般调整播期可以达到父本、母本花期相遇,但在气候异常年份,则要注意花期预测,以便早了解花期相遇情况。父本、母本花期能否良好相遇是制种成败的关键。在生产玉米杂交种时,如果母本抽丝过早或者比父本散粉晚,就必须实行错期播种,以保证花期相遇。父本、母本花期相遇的标志是:母本雌穗抽丝比父本雄穗散粉早 During the hybridization of maize, the sowing date should be adjusted according to the growth period of the male and female parent. In normal years, the sowing date of female parent and female parent can be reached during the normal sowing date. However, Forecast, in order to understand the early flowering encounter. Paternal, female flower flowering is a good seed or seed the key to success. In the production of corn hybrids, if the female parent filament spinning too early or loose powder than the father, it must implement the wrong sowing, in order to ensure the flowering meet. The sign of the meeting between male and female parental flowers is that the female parent spins silk earlier than the female male spike